News: Fysikhttp://www.chalmers.se/sv/nyheterNews related to Chalmers University of TechnologyThu, 20 Jun 2019 13:28:28 +0200http://www.chalmers.se/sv/nyheterhttps://www.chalmers.se/en/departments/mc2/news/Pages/The-major-investment-that-will-take-the-2D-materials-into-society.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/The-major-investment-that-will-take-the-2D-materials-into-society.aspxMajor investment to take the 2D materials into the society<p><b>​A new center for research on two-dimensional materials is formed from 2020 with support from Sweden&#39;s Innovation Agency Vinnova. &quot;We build a strong and dynamic hub for 2D material here at Chalmers. Through strong industrial cooperation, we can ensure that our knowledge comes in handy,&quot; says Ermin Malic, who will be the director of the new center, 2D-Tech.</b></p><div><span style="background-color:initial"><img class="chalmersPosition-FloatRight" alt="Picture of Ermin Malic." src="/SiteCollectionImages/Institutioner/MC2/News/ErminMalic_190415_05_350x305.jpg" style="margin:5px" />The initiative starts at the turn of the year 2020 and will focus on technology based on two-dimensional materials in several different application areas for Swedish industry. It is about getting multifunctional composites, sustainable energy, electronics and new materials.</span><br /></div> <div>&quot;That we get this funding is crucial for us to be able to establish the 2D materials in society&quot;, says Ermin Malic (to the right)<span style="background-color:initial">, professor at the Department of Physics and director for the new center, which will be part of the Graphene Centre at Chalmers.</span></div> <div><br /></div> <h3 class="chalmersElement-H3">Hosted by MC2 </h3> <div>Just like the Graphene Centre, 2D-Tech will be hosted by the Department of Microtechnology and Nanoscience –​ MC2. <span style="background-color:initial">In total, 17 Chalmers researchers from six different departments are associated with the project. </span><span style="background-color:initial">Most of these are active at Physics and MC2, but there are also members from the Department of Industrial and Materials Science, the Department of Biology and Biological Engineering, the Department of Electrical Engineering, and the Department of Chemistry and Chemical engineering involved. The center will also be strengthened with around 20 PhD students and post-doctoral researchers. </span><span style="background-color:initial">​</span></div> <span></span><div></div> <div><br /></div> <div><span style="background-color:initial">The Swedish Defence Research Agency (FOI) and Region Västra Götaland are also included in the center – as well as 16 different companies: 2D Fab AB, Airbus, APR Technologies AB, Battenfeld Sverige AB, Billerud Korsnäs, Biopetrolia, Elitkomposit AB, Gapwaves AB, GKN Aerospace, Graphensic AB, Saab AB, SaltX Technology AB, SHT Smart High Tech AB, Talga Graphene AB, Wellspect Healthcare and Volvo Cars.</span><br /></div> <div><br /><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/MC2/News/2D-tech-bild_350x305.jpg" class="chalmersPosition-FloatLeft" alt="Picture of 2d-tech." style="margin:5px" />In total, 2D-Tech is financed by more than SEK 100 million over five years. In addition to the support from Vinnova of 36 million, Chalmers and the cooperating parties contribute equally. </span></div> <div><br /><span style="background-color:initial">Vinnova is investing in a total of eight new competence centers where universities and companies together will conduct world-class research and education in areas that are important for Sweden. Three of them end up at Chalmers.</span></div> <div>&quot;In order to address today's global challenges, we need to develop completely new solutions and research needs to benefit society. Research environments where universities and industry work closely together are therefore crucial, and long-term investments in centers of excellence are an important part of it&quot;, says Vinnova's Director General, Darja Isaksson, in a press release.</div> <div><br /></div> <div><h3 class="chalmersElement-H3">&quot;Confirms the potential of 2D-materials&quot;</h3> <div><span style="background-color:initial">The new center is coordinated by Cristina Andersson, Vice Head for Utilization and Industrial Relations Officer at MC2:</span></div></div> <div>&quot;It's absolutely amazing! We are so excited about Vinnova's decision to fund 2D-Tech. It confirms that 2D materials have a great potential to create competitiveness. The center will strengthen not only Chalmers, but also the region and Sweden by creating a competitive Swedish node for research and innovation within 2D materials&quot;, she says.</div> <div> </div> <div>Vinnova says in its motivation that they were impressed by how 2D-Tech was presented:</div> <div>&quot;The application is based on a strong base at Chalmers, and addresses an important area that links to the future industrial capacity in Sweden&quot;, they write among other things.</div> <div>&quot;This is the beginning of a new research area that is equally fascinating and interesting for academia as it is for industry&quot;, Ermin Malic concludes.</div> <div> </div> <div>Text: Michael Nystås and Mia Halleröd Palmgren</div> <div>Photo: Mia Halleröd Palmgren </div> <div> </div> <div><a href="https://www.vinnova.se/en/news/2019/06/efforts-on-world-class-research-environments">Read the pressrelease from Vinnova</a> &gt;&gt;&gt;</div> <div><br /><a href="/en/departments/physics/news/Pages/Tailor-made-materials-with-ultrafast-connections.aspx">Read an earlier article on how 2D materials can be tailor-made</a><span style="background-color:initial"> &gt;&gt;&gt;</span></div> <div><br /><a href="/en/centres/graphene/Pages/default.aspx">Read more about the Graphene Centre at Chalmers</a><span style="background-color:initial"> &gt;&gt;&gt;</span></div>Wed, 19 Jun 2019 09:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Soon,-air-pollution-could-be-measured-on-every-street-corner.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Soon,-air-pollution-could-be-measured-on-every-street-corner.aspxAir pollution could be measured on every street corner<p><b>​​Air pollution is responsible for 550,000 premature deaths a year in Europe – and 7 million worldwide, according to the WHO. Measuring it can be a challenge, however, as the equipment tends to be large and expensive. But soon, this may change, thanks to a small, optical nano-sensor, developed at Chalmers, which can be mounted onto an ordinary streetlight.​</b></p><div>​The technology is already in use in western Sweden, and researchers and other interested parties hope that the sensor could soon be used in many broad contexts. A collaboration with the University of Sheffield is also underway. <br /><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/F/350x305/350x305_IremTanyeli_labb_20190405.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" />“Air pollution is a global health problem. To be able to contribute to increased knowledge and a better environment feels great. With the help of these small, portable sensors, it can become both simpler and cheaper to measure dangerous emissions extremely accurately,” says Chalmers researcher Irem Tanyeli, who has helped develop the small sensors, which measure nitrogen dioxide with great precision. <br /><br /></span></div> <div>For the hi-tech sensors to make the move from the lab out into the real world, Irem Tanyeli worked with the Gothenburg-based company Insplorion, co-founded by Chalmers researcher Christoph Langhammer in 2010. With help from financier Mistra Innovation, he has been involved with the company’s efforts at taking on the great environmental challenge of precisely mapping air pollution. <br /><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/350x305/ChristophLanghammerfarg350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:250px;height:218px" />“This is a great example of how a university and a company can collaborate. Both parties contribute with their expertise to create a new product, contributing to a more sustainable society,” says Christoph Langhammer, Professor at the Chalmers Department of Physics.<br /><br /></div> <div>Exhaust gases from road traffic are responsible for the majority of nitrogen dioxide pollution in the air. Breathing in nitrogen dioxide is harmful to our health, even at very low levels, and can damage our respiratory systems and lead to cardiac and vascular diseases. According to the World Health Organisation, air pollution is the single biggest environmental health risk worldwide. <br /><br /></div> <div>The new optical nano-sensor can detect low concentrations of nitrogen dioxide very precisely – down to the parts-per-billion level (ppb). The measuring technique is built upon an optical phenomenon which is called a plasmon. It arises when metal nanoparticles are illuminated and absorb light of certain wavelengths. Christoph Langhammer and his research group have been working in this area for over a decade, and now innovations are starting to see the light of day. <br /></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/350x305/350x305Leading%20Light%20armatur.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />For the last two years, Irem Tanyeli has been working with optimising the sensor material and conducting tests under differently simulated environmental conditions. The technology is now installed in a streetlight in Gothenburg, as part of a collaboration with lighting company Leading Light, to measure the quantity of nitrogen dioxide molecules in the urban environment. <br /><br /></div> <div>“In the future, we hope that the technology also can be integrated into other urban infrastructure, like traffic lights or speed cameras, or for measuring air quality indoors,” says Irem Tanyeli. </div> <div><br /><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/250px_Installation%20IVL%20Nordstanstaket.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:200px;height:307px" /></div> <div><a href="http://www.loviot.se/who-we-are/">A sensor is also installed on the roof of Nordstan in Gothenburg, ​</a>one of Scandinavia’s biggest shopping malls, and soon more will be placed along the route of Västlänken, a major railway tunnel construction project, also in Gothenburg.<br /><br /></div> <div>The technology has already raised interest from several organisations, including the Urban Flows Observatory, an air quality centre at the University of Sheffield. They will conduct field testing, comparing the nanosensors’ results with data from a number of British reference stations. </div> <div>“There is a lack of small functional nitrogen dioxide sensors on the market. We find this nano plasmonic solution interesting, and look forward to the test results,” says Professor Martin Mayfield at Urban Flows Observatory, University of Sheffield. <br /><br /></div> <div>Other interested parties include Stenhøj Sverige, a company, which develops gas and smoke analysers for automotive repair shops and vehicle inspection companies, as well as IVL, Swedish Environmental Research Institute.IVL works with applied research and development in close collaboration with industry and the public sphere to address environmental issues.<br /><br /></div> <div>The new sensor technology is not limited to measuring nitrogen dioxide but can also be adapted to other types of gases. There is therefore potential for further innovation. <br /><br /></div> <div>“Nitrogen dioxide is just one of the many substances which can be detected with the help of optical nanosensors. There are great opportunities for this type of technology,” says Christoph Langhammer. </div> <div><br /></div> <div><p class="chalmersElement-P" style="margin-bottom:10px;background-color:transparent"><span style="font-weight:700">Text: </span><span style="background-color:initial">Joshua Worth,</span><a href="mailto:joshua.worth@chalmers.se"> joshua.worth@chalmers.se</a><span style="background-color:initial">​  </span></p> <p class="chalmersElement-P" style="margin-bottom:10px;background-color:transparent"><span style="background-color:initial">and </span><span style="background-color:transparent">Mia Halleröd Palmgren, </span><a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se</a><span style="background-color:transparent"> </span></p> <span style="background-color:transparent"></span><p class="chalmersElement-P" style="margin-bottom:10px;background-color:transparent"></p> <span style="background-color:transparent"></span><p class="chalmersElement-P" style="margin-bottom:10px;background-color:transparent"><span style="font-weight:700">Photos</span> by Insporion/Johan Bodell (banner image), Mia Halleröd Palmgren (Irem Tanyeli), Henrik Sandsjö (Christoph Langhammer) and Jonas Tobin (Jenny Lindén).<span style="background-color:initial;color:rgb(51, 51, 51)"> ​</span></p></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/750x340Sensor_bred_20190305.jpg" alt="" style="margin:5px" /><br /><div><span style="background-color:initial">The prototype consists of a sensor, which is connected to a box which both shows the emissions levels in real time, and saves the results over time. </span><span style="background-color:initial">​</span><br /></div> <br /></div> <div><span style="background-color:initial;font-family:inherit;font-size:20px;color:rgb(33, 33, 33)">For more information, contact: </span><br /></div> <div><br /></div> <div><span style="background-color:initial"><a href="/en/Staff/Pages/Irem-Tanyeli.aspx">Irem Tanyeli</a>, Researcher, Department of Physics, Chalmers, <a href="mailto:irem.tanyeli@chalmers.se,">irem.tanyeli@chalmers.se,</a> +46 79 337 25 66 </span><br /></div> <div><span style="background-color:initial"><br /></span></div> <div><a href="/en/Staff/Pages/Christoph-Langhammer.aspx">Christoph Langhammer​</a>, Professor, Department of Physics, Chalmers, +46 31 772 33 31, <a>clangham@chalmers.se​</a></div> <div><a><br /></a></div> <div><a href="https://www.mynewsdesk.com/uk/chalmers/pressreleases/soon-air-pollution-could-be-measured-on-every-street-corner-2885458"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release and download high resolution images.​</a></div> <div><br /></div> <div><a href="http://www.euro.who.int/__data/assets/pdf_file/0012/385959/fs-sdg-3-9-air-eng.pdf?ua=1"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more on the World Health Organisation’s facts on air pollution.​</a></div>Thu, 13 Jun 2019 07:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Light-box-that-opens-new-doors-into-the-nanoworld.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Light-box-that-opens-new-doors-into-the-nanoworld.aspxLight box that opens new doors into the nanoworld<p><b>Researchers at Chalmers have discovered a completely new way of capturing, amplifying and linking light to matter at the nanolevel. Using a tiny box, built from stacked atomically thin material, they have succeeded in creating a type of feedback loop in which light and matter become one. The discovery, which was recently published in Nature Nanotechnology, opens up new possibilities in the world of nanophotonics.</b></p><div><span style="background-color:initial"><div><span style="background-color:initial">Photonics is concerned with various means of using light. Fibre-optic communication is an example of photonics, as is the technology behind photodetectors and solar cells. When the photonic components are so small that they are measured in nanometres, this is called nanophotonics. In order to push the boundaries of what is possible in this tiny format, progress in fundamental research is crucial. The innovative ‘light box’ of the Chalmers researchers makes the alternations between light and matter take place so rapidly that it is no longer possible to distinguish between the two states. Light and matter become one. </span><br /></div> <div><span style="background-color:initial"><br /></span></div></span><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/RuggeroVerre_200px.jpg" class="chalmersPosition-FloatRight" alt="" /><span style="background-color:initial"></span><span style="background-color:initial"><div>“We have created a hybrid consisting of equal parts of light and matter. The concept opens completely new doors in both fundamental research and applied nanophotonics and there is a great deal of scientific interest in this,” says Ruggero Verre, a researcher in the Department of Physics at Chalmers and one of the authors of the scientific article.</div> <div><br /></div> <div>The discovery came about when Verre and his departmental colleagues Timur Shegai, Denis Baranov, Battulga Munkhbat and Mikael Käll combined two different concepts in an innovative way. Mikael Käll’s research team is working on what are known as nanoantennas, which can capture and amplify light in the most efficient way. Timur Shegai’s team is conducting research into a certain type of atomically thin two-dimensional material known as TMDC material, which resembles graphene. It was by combining the antenna concept with stacked two-dimensional material that the new possibilities were created. </div> <div><br /></div> <div>The researchers used a well-known TMDC material – tungsten disulphide – but in a new way. By creating a tiny resonance box – much like the sound box on a guitar – they were able to make the light and matter interact inside it. The resonance box ensures that the light is captured and bounces round in a certain ‘tone’ inside the material, thus ensuring that the light energy can be efficiently transferred to the electrons of the TMDC material and back again. It could be said that the light energy oscillates between the two states – light waves and matter – while it is captured and amplified inside the box. The researchers have succeeded in combining light and matter extremely efficiently in a single particle with a diameter of a mere 100 nanometres, or 0.00001 centimetres. </div> <div><br /></div></span><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/TimurShegai_190510.jpg300x.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px;height:355px;width:280px" /><span style="background-color:initial"><div>This all-in-one solution is an unexpected advance in fundamental research, but can hopefully also contribute to more compact and cost-effective solutions in applied photonics. </div> <div>“We have succeeded in demonstrating that stacked atomically thin materials can be nanostructured into tiny optical resonators, which is of great interest for photonics applications. Since this is a new way of using the material, we are calling this ‘TMDC nanophotonics’. I am certain that this research field has a bright future,” says Timur Shegai, Associate Professor in the Department of Physics at Chalmers and one of the authors of the article.<span style="background-color:initial">​</span></div></span></div> <div><br /></div> <div><span style="background-color:initial">Text: Mia Halleröd Palmgren, </span><a href="mailto:mia.hallerodpalmgren@chalmers.se">miahallerodpalmgren@chalmers.se​</a><br /></div> <div> <div>Foto:  Aykut Argun (Ruggero Verre) and Mia Halleröd Palmgren (Timur Shegai and group photo below). <span style="background-color:initial">​</span></div></div> <div><span style="background-color:initial"><br /></span></div> <div><br /></div> <div><a href="https://www.nature.com/articles/s41565-019-0442-x"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /> </a><div style="display:inline !important"><a href="https://www.nature.com/articles/s41565-019-0442-x">Read the scientific article Transition metal dichalcogenide nanodisks as high-index dielectric Mie nanoresonators i Nature Nanotechnology.</a></div></div> <div><br /></div> <div><a href="https://www.mynewsdesk.com/uk/chalmers/pressreleases/tiny-light-box-opens-new-doors-into-the-nanoworld-2884296"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release and download high resolution images. ​</a></div> <div><br /></div> <div><h2 class="chalmersElement-H2">For more information: <span style="font-family:inherit;background-color:initial">​</span><br /></h2></div> <div><div></div> <div><p class="chalmersElement-P"><a href="/en/Staff/Pages/Ruggero-Verre.aspx">Ruggero Verre</a>, Researcher, Department of Physics, Chalmers University of Technology, +46 31 772 80 39, <a href="mailto:ruggero.verre@chalmers.se">ruggero.verre@chalmers.se</a></p></div> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><a href="/en/Staff/Pages/Mikael-Käll.aspx">Mikael Käll,</a> Professor and Head of the Division of Bionanophotonics, Department of Physics, Chalmers University of Technology, +46 31 772 31 39, <a href="mailto:mikael.kall@chalmers.se">mikael.kall@chalmers.se</a></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><br /></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><a>Timur Shegai,​</a> Associate Professor, Department of Physics, Chalmers University of Technology, +46 31 772 31 23, <a href="mailto:timurs@chalmers.se">timurs@chalmers.se​</a></p> <p class="chalmersElement-P"><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/1_Kall_grupp_750px.jpg" alt="" style="margin:5px" /><br />The researchers behind the new results: Timur Shegai, Ruggero Verre, Mikael Käll, Denis Baranov and <span style="background-color:initial">Battulga Munkhbat. </span></p></div> <div></div>Tue, 11 Jun 2019 07:00:00 +0200https://www.chalmers.se/en/departments/see/news/Pages/Chalmers-student-Global-Swede-2019.aspxhttps://www.chalmers.se/en/departments/see/news/Pages/Chalmers-student-Global-Swede-2019.aspxChalmers student receives Global Swede Award 2019<p><b>​Jaswanth Subramanyam, student in Physics and Astronomy at Chalmers, receives the distinguished award Global Swede 2019. The Award is presented to active, committed and enthusiastic students who are excellent in areas closely related to innovation, creativity and entrepreneurship and shown that they are good representatives of their own country as well as Sweden.</b></p>​<span style="background-color:initial">It is the ninth consecutive year that the diploma ceremony for Global Swede is organized by the Ministry of Foreign Affairs and the Swedish Institute. Global Swede is part of the Government and the Swedish Institute's work on building long-term relationships with international students in Sweden. The purpose is to create bridges of cross-border and multicultural networks that will contribute to Swedish trade and promote the work of reaching future solutions.</span><div><br /><span style="background-color:initial"></span><div>– I am honoured to be recognized like this, it was an amazing ceremony with inspiring speeches and spell-binding music performances. And the best part was not only being able to meet representatives of these prestigious establishments but also meeting my peers from across the world excelling in various fields and pursuing their own passions in their studies, says Jaswanth Subramanyam, who has come from India to study at Chalmers University of Technology. When not studying at Chalmers, Jaswanth is a musician. You can <a href="https://open.spotify.com/album/07TkBYSxySxUEXNrz7etN5?si=47B1xF-NRqKqgF3W41XUUg">listen to his recent album Jza Phonics at Spotify​</a>.</div> <div> </div> <div>– Global Swede is a way of saying “thank you” to some of our most innovative international students. Students from other countries play an important role in our international relations and I hope that the award can encourage continued exchanges and relations with Sweden, says Foreign Trade Minister Ann Linde, who attended the ceremony.</div> <div><br /> </div> <div><a href="https://si.se/global-swede-2019/">Read more at the Swedish Institute's website​</a>. </div></div>Wed, 05 Jun 2019 00:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Colliding-lasers-double-the-energy-of-proton-beams.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Colliding-lasers-double-the-energy-of-proton-beams.aspxColliding lasers double the energy of proton beams<p><b>​Researchers from Sweden’s Chalmers University of Technology and the University of Gothenburg present a new method which can double the energy of a proton beam produced by laser-based particle accelerators. The breakthrough could lead to more compact, cheaper equipment that could be useful for many applications, including proton therapy.​​​</b></p><div><p class="chalmersElement-P">Proton therapy involves firing a beam of accelerated protons at cancerous tumours, killing them through irradiation. But the equipment needed is so large and expensive that it only exists in a few locations worldwide. ​</p> <div> </div> <p class="chalmersElement-P"> </p> <div> </div> <p class="chalmersElement-P">Modern high-powered lasers offer the potential to reduce the equipment’s size and cost, since they can accelerate particles over a much shorter distance than traditional accelerators – reducing the distance required from kilometres to metres. The problem is, despite efforts from researchers around the world, laser generated proton beams are currently not energetic enough. But now, the Swedish researchers present a new method which yields a doubling of the energy – a major leap forward. </p> <div> </div> <p class="chalmersElement-P"> </p> <div> </div> <div><p class="chalmersElement-P">The standard approach involves firing a laser pulse at a thin metallic foil, with the interaction resulting in a beam of highly charged protons. The new method involves instead first splitting the laser into two less intense pulses, before firing both at the foil from two different angles simultaneously. When the two pulses collide on the foil, the resultant electromagnetic fields heat the foil extremely efficiently. The technique results in higher energy protons whilst using the same initial laser energy as the standard approach.<span style="background-color:initial;color:rgb(51, 51, 51)"> </span></p></div> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> <img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/JulienFerri_190508_200x300.jpg" class="chalmersPosition-FloatLeft" alt="" style="width:180px;height:270px" /> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">“This has worked even better than we dared hope. The aim is to reach the energy levels that are actually used in proton therapy today. In the future it might then be possible to build more compact equipment, just a tenth of the current size, so that a normal hospital could be able to offer their patients proton therapy,” says Julien Ferri, a researcher at the Department of Physics at Chalmers, and one of the scientists behind the discovery. <br /></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">The unique advantage of proton therapy is its precision in targeting cancer cells, killing them without injuring healthy cells or organs close by. The method is therefore crucial for treating deep-seated tumours, located in the brain or spine, for example. The higher energy the proton beam has, the further into the body it can penetrate to fight cancer cells.  </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">Although the researchers’ achievement in doubling the energy of the proton beams represents a great breakthrough, the end goal is still a long way off. </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> <img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/TundeFulop_180829_270x.jpg" class="chalmersPosition-FloatRight" alt="" style="width:180px;height:270px" /> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">“We need to achieve up to 10 times the current energy levels to really target deeper into the body. One of my ambitions is to help more people get access to proton therapy. Maybe that lies 30 years in the future, but every step forward is important,” says Tünde Fülöp, Professor at the Department of Physics at Chalmers. </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">Accelerated protons are not only interesting for cancer treatment. They can be used to investigate and analyse different materials, and to make radioactive material less harmful. They are also important for the space industry. Energetic protons constitute a large part of cosmic radiation, which damages satellites and other space equipment. Producing energetic protons in the lab allows researchers to study how such damage occurs, and to develop new materials which can better withstand the stresses of space travel. </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">Together with research colleague Evangelos Siminos at the University of Gothenburg, Chalmers researchers Julian Ferri and Tünde Fülöp used numerical simulations to show the feasibility of the method. Their next step is to conduct experiments in collaboration with Lund University. </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">“We are now looking at several ways to further increase the energy level in the proton beams.  Imagine focusing all the sunlight hitting the Earth at a given moment onto a single grain of sand – that would still be less than the intensity of the laser beams that we are working with. The challenge is to deliver even more of the laser energy to the protons.” says Tünde Fülöp. </p> <div><p class="chalmersElement-P"><span style="background-color:initial">The new scientific results have been published in the respected journal Communications Physics, part of the Nature family.</span><br /></p></div> <p class="chalmersElement-P"></p> <p class="chalmersElement-P"></p> <p class="chalmersElement-P"><a href="https://www.nature.com/articles/s42005-019-0140-x"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the scientific article &quot;Enhanced target normal sheath acceleration using colliding laser pulses. </a><span style="background-color:initial"> ​<br /><br /></span></p></div> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><span><strong>Text: </strong></span><span>Mia Halleröd Palmgren, </span><a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se</a> and <span>Joshua Worth,</span><a href="mailto:joshua.worth@chalmers.se"> joshua.worth@chalmers.se</a><span>​ </span></p> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P"><strong>Photos</strong> by Johan Bodell (Tünde Fülöp) and Mia Halleröd Palmgren</p> <p class="chalmersElement-P"><span style="background-color:initial"></span></p> <p class="chalmersElement-P"> </p> <div><h3 class="chalmersElement-H3">More about the research:</h3> <p class="chalmersElement-P"> </p> <p class="chalmersElement-P">The research has been financed by the Knut and Alice Wallenberg Foundation, within the framework for the project <a href="http://kaw.wallenberg.org/forskning/laser-ska-ge-energirika-joner-forskning-och-medicin">“Plasma based compact ion sources”.</a> <span>Other financiers include the European Research Council and the Swedish Research Council.  The simulations have been done at the national data centre Chalmers Centre for computational Science and Engineering. (C3SE)</span></p> <p class="chalmersElement-P"> </p> <div><br /></div></div> <div> </div> <div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/F/750x340/Tünde_Julien_Evangelos750x340.jpg" alt="" style="margin:5px" /><br /></span><span style="background-color:initial">The researchers behind the method: Tünde Fülöp and Julien Ferri at Chalmers University of Technology and Evangelos Siminos at the University of Gothenburg have recently presented a technique which makes it possible to create proton beams with double the energy, through the use of colliding laser pulses.​<br /></span></div> <div> </div> <div><span style="background-color:initial"><br /></span></div> <div> </div> <div><h3 class="chalmersElement-H3">For more information, contact: </h3></div> <div> </div> <div><div class="page-content"><a href="/sv/personal/redigera/Sidor/Tünde-Fülöp.aspx"></a><div> <a href="/en/staff/Pages/Julien-Ferri.aspx">Julien Ferri​</a><span style="background-color:initial">, Postdoctoral researcher, Department of Physics, Chalmers University of Technology, +46 70 986 74 76, </span><a href="mailto:julien.ferri@chalmers.se​​">julien.ferri@chalmers.se​​​</a><br /></div> <div><br /></div> <div><a href="/en/staff/Pages/Tünde-Fülöp.aspx">Tünde Fülöp</a>, <span style="background-color:initial">Professor, Department of Physics, Chalmers University of Technology, </span><span style="background-color:initial">+46 72 986 74 40</span>,<a href="mailto:tunde.fulop@chalmers.se"> tunde.fulop@chalmers.se​</a></div> <div><br /></div> <div> <a href="https://www.physics.gu.se/english/about-the-department/staff?languageId=100001&amp;userId=xsimev">Evangelos Siminos,​</a><span style="background-color:initial"> </span><span style="background-color:initial">Assistant Professor, Department of Physics, University of Gothenburg,  ​</span><span style="background-color:initial"><br /></span><span style="background-color:initial">+46 31 786 91 61,</span><span style="background-color:initial"> </span><a href="mailto:evangelos.siminos@physics.gu.se">evangelos.siminos@physics.gu.se</a></div></div></div>Mon, 27 May 2019 07:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Women-scientists-highlighted-at-a-book-release-seminar-in-Tokyo.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Women-scientists-highlighted-at-a-book-release-seminar-in-Tokyo.aspxWomen scientists highlighted at a book release seminar in Tokyo<p><b>​​A book release seminar to mark the publication of the Japanese version of the book “The Discovery of Nuclear Fission – Women Scientists in Highlight” was held on 9 May at the Swedish Embassy in Tokyo.</b></p>The book is about Ida Noddack, Irène Joliot-Curie and Lise Meitner's contributions to science. It is written by Chalmers Professor Imre Pázsit and Professor Nhu-Tarnawska Hoa Kim-Ngan, Pedagogical University of Cracow​, Poland. The seminar was organised by<img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/bok.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:226px;width:174px" /> the Japan Institute of Scandinavian Studies (JISS), and was attended both by members of JISS and the Swedish <span style="background-color:initial">Embassy, as well as numerous colleagues and friends of Imre Pázsit from various parts of Japan, including Sendai, Nagoya and Kyoto. </span><div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial">Both authors of the book, as well as the translator, Mrs. Noriko Johansson Akinaga were present at the event. Interestingly, some members of JISS turned out to be Chalmers alumni, and the chairman of the local section of CING (Chalmersska Ingenjörsföreningen), Carl Eklund also attended the event. For the sake of non-scientist participants, the talk was translated to Japanese by Prof. Masaharu Kitamura of Tohoku University. Each participant of the seminar received a book, dedicated by the authors. The seminar was followed by a reception, sponsored by the Department of Physics at Chalmers. The seminar was very much appreciated by the participants, and was a good opportunity to spread more information not only about the subject of the book, but also about Chalmers and Sweden. </span><div><br />For this special occasion, Imre Pázsit  wore &quot;The Order of the Rising Sun, Gold Rays with Neck Ribbon&quot;, which he was awarded in 2016 from the Government of Japan for his &quot;Contribution to the promotion of scientific and technological exchanges and mutual understanding between Japan and Sweden&quot;. <br /><br /><div><a href="/sv/styrkeomraden/energi/nyheter/Sidor/Ser-till-kvaliten-i-forskningen-trots-Fukushima.aspx" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the book (in Swedish)​</a></div> <div><a href="/en/departments/physics/news/Pages/He-came-to-Sweden-and-got-a-book-in-Japanese--.aspx" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the book and about the Nobel Prize Laureate Takaaki Kajita who got a copy when he gave a talk at Chalmers 2018.​</a></div></div></div>Thu, 23 May 2019 00:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/New-possibilities-within-catalysis.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/New-possibilities-within-catalysis.aspxNew possibilities within catalysis<p><b>​​Catalysts are not only used to speed up chemical transformations. They are also used to selectively steer reactions into desired molecules.​</b></p><span style="background-color:initial">One challenging and technologically important reaction is selective hydrogenation of acetylene (C2H2) to ethylene (C2H4). The reaction is difficult due to the risk for over-hydrogenation into ethane (C2H6). ​<br />Mikkel Jørgensen and Henrik Grönbeck have in a study that recently was published in Journal of American Chemical Society, explored selective acetylene hydrogenation over, so-called, single atom alloys consisting of isolated Pd atoms embedded in Cu nanoparticles. The research involved simultaneous development of novel computational techniques for studies of reactions over nanoparticles. They find that a high selectivity for the reaction can be reached by synthesis of large nanoparticles and that the Pd-atoms should be placed in corner sites.</span>Thu, 23 May 2019 00:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Two-physicists-received-the-title-Jubilee-Doctor.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Two-physicists-received-the-title-Jubilee-Doctor.aspxTwo physicists received the title Jubilee Doctor<p><b>On 18 May Chalmers hosted a Doctoral Conferment ceremony in the Concert Hall in Gothenburg. The physicists Göran Grimwall and Bengt I Lundqvist, from the former Department of Applied Physics, both received the title Jubilee doctor. Jubilee doctor is a title earned by individuals who received their doctoral degrees fifty years earlier at the same university.</b></p><h3 class="chalmersElement-H3"><span>Göran Grimvall​</span></h3> <div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Goran_Grimwall.JPG" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /></span><div>Göran Grimvall has spent almost half his life at Chalmers. He lived for 25 years in his family home at Gibraltargatan 26 and finished his schooling at Hvitfeldtska Upper  Secondary School. He gained a Master’s degree in  engineering physics in 1963, and a Doctorate in solid state theory in 1969. He was then a researcher and lecturer at the Divisions of Theoretical Physics and Metallic Engineering Materials. In 1977 he was appointed Professor of Theore- tical Physics at KTH, where he is now Professor Emeritus. Göran Grimvall’s research looks at thermophysical  properties. He studies quantum mechanical models for electrical and thermal conductivity, grating oscillations, alloy phase diagrams and more. Among his many roles, he was Programme Director and Dean of Engineering Physics at KTH, was leader of the government’s 1995 Submarine Commission, and is chief secretary for the Göran   Gustafsson Foundation. He has written 15 books, including books on sporting  physics, university textbooks and research-led publications in his field. He has helped popularise physics and tech- nology through radio and television, and the newspaper  Ny Teknik for over 40 years. He was also Chairman of one of the Royal Swedish Academy of  Engineering Sciences’ twelve divisions, and received several awards, including the Gustaf Dalén medal and the Royal Academy’s gold medal.</div> <div><div> </div></div> <div><span style="background-color:initial;color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600">Bengt Lundqvist</span><br /></div></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Bengt_Lundqvist.JPG" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /><div>Bengt I. Lundqvist, born 1938 in Gothenburg, was among the first ever technical physics intake at Chalmers. He graduated in 1960 and received a doctorate in 1969. In 1974 he became a professor in Aarhus and in 1978 in mathematical physics at Chalmers. He has been a visiting researcher at Cornell, Rutgers, DTU, Stanford, IBM Yorktown, and MPI Stuttgart. He researches condensed matter physics, especially surface physics, a goldmine for development of models for multi-particle systems. He has also contributed to the basics of calculating electron structure and binding in multiple electron systems with density functional theory, and has roughly 22,000 citations between these two areas. His postgraduate teaching has been dedicated, and he has supervised around 30 students to doctorate level. Around 10 of these have gone onto professorships, at various  global institutions, and around 20 work in industrial R&amp;D. He has fulfilled the full professorship quota, often with a project-based examination, and has been honoured with an Ericson scholarship, “to promote good pedagogy and innovation in teaching”. He has also been heavily involved in all aspects of   Chalmers’ internal and administrative work. He has held almost every position available – except for the Presidency.</div> <div><br /></div> <div></div></div> <div><div><a><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more about the Doctoral Conferment ceremony on 18 May (In Swedish)</a></div></div>Mon, 20 May 2019 00:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/A-big-celebration-of-new-research-possibilities.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/A-big-celebration-of-new-research-possibilities.aspxAn international celebration of new research possibilities<p><b>​Chalmers&#39; new electron microscope enables researchers to study and design the smart materials of the future. On 15 May, it was time for the great unveiling of the huge transmission electron microscope (TEM).</b></p><span style="background-color:initial">The unique TEM weighs about five tons and it allows researchers to explore the world of individual atoms. More than a hundred people attended the grand inauguration event and took the chance to learn more about the new possibilities with soft microscopy and materials design. Professor Eva Olsson was the chair of the grand opening ceremony at Chalmers, where researchers and specialists from all over the world created a network – through tying colourful ribbons together. <br /><br /></span><div>Even Chalmers' founder, William Chalmers, seemed to have gained a new lease of life thanks to the excitement of the new microscope. He (or rather Philip Wramsby) moderated the event and let the audience join a journey down the memory lane. </div> <div><br /></div> <div>In the afternoon the seminars at Chalmers attracted many researchers from near and far. The lecture hall Kollektorn was completely crowded when several leading international researchers held their presentations. Special invitees included members of a European network for electron microscopy, in which Chalmers is involved.</div> <div><br /></div> <div>As the microscope has Japanese origin, representatives of the manufacturer, JEOL, from Japan as well as Europe visited Chalmers for this special event. They expressed their joy of seeing the unique instrument installed in Sweden. The day ended, as it should be, with karaoke in Japanese!</div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se​</a></div> <div>Images: Johan Bodell, Helén Rosenfeldt and Mia Halleröd Palmgren</div> <div><br /></div> <div><br /></div> <div><a href="https://www.youtube.com/watch?v=GLqbS2dTMFA"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" style="font-weight:600" /><b>Watch the inauguration ceremony in the Gustaf Dalén lecture hall, Chalmers, 15 May 2019</b>​</a><br /></div> <div><br /></div> <h3 class="chalmersElement-H3">Read more: </h3> <div><div><a href="http://www.chalmers.se/en/departments/physics/news/Pages/Come-and-experience-Chalmers%e2%80%99-unique-electron-microscope.aspx" style="outline:currentcolor none 0px"><img class="ms-asset-icon ms-rtePosition-4" src="http://www.chalmers.se/_layouts/images/ichtm.gif" alt="" />The unique electron microscope that enables researchers to explore the world of individual atoms</a><br /></div> <div></div> <div>​<a href="/en/departments/physics/news/Pages/How-to-design-smart-materials-for-the-future.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to design smart materials for the future</a></div></div> <div><a href="http://www.chalmers.se/sv/institutioner/fysik/nyheter/Sidor/33-miljoner-till-unika-mikroskop.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />33 million for unique microscopes</a><br /></div>Thu, 16 May 2019 00:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Well-attended-user-meeting-for-nano-researchers.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Well-attended-user-meeting-for-nano-researchers.aspxWell-attended user meeting for nano researchers<p><b>​​Around 250 European nano researchers, 29 of them from Chalmers, gathered at the Nordic Nanolab User Meeting at the Technical University of Denmark (DTU) in Copenhagen on 7-8 May.​</b></p><div><span style="background-color:initial"><img class="chalmersPosition-FloatLeft" alt="Picture from user meeting." src="/SiteCollectionImages/Institutioner/MC2/News/num_IMGP2737_350x305.gif" style="margin:5px" /></span></div> <div><span style="background-color:initial">A reasonable amount of seminars with different themes occurred, with lecturers from Chalmers and other universities. Marcus Rommel, research engineer at the Nanofabrication Laboratory, talked about lithography in his lecture &quot;EBL hardware basics and craftsmanship&quot;. Ruggero Verre, researcher at the Bionanophotonics Group at the Department of Physics, talked on the topic &quot;From atoms to microfilms: a journey in thin film deposition technology&quot;. </span><br /></div> <div><br /><span style="background-color:initial">Karin Hedsten (to the left), Mats Hagberg, Martin Hollertz and Henrik Frederiksen, all researchers at the Nanofabrication Laboratory, acted chair persons during one thematic session each, on etching technologies and thin film technologies respectively. Karin also lectured on wet etching techniques at one of the thematic sessions.</span></div> <div><br /><span style="background-color:initial">The evening of 7 May included a social event with dinner and entertainment by Wallmans Dinnershow at Cirkusbygningen in Copenhagen.</span></div> <div><br /><span style="background-color:initial">Text: Michael Nystås</span></div> <div>Photo: Maj Winkelmann, DTU</div> <div><br /></div> <div><a href="https://www.nanolab.dtu.dk/english/nyheder/nyhed?id=9ff1799a-7c84-4abf-a39c-bade9f582b7c">Read news article on dtu.dk​</a> &gt;&gt;&gt;</div> <div><br /></div> <div><img class="chalmersPosition-FloatLeft" alt="Picture from user meeting." src="/SiteCollectionImages/Institutioner/MC2/News/num_IMGP3500_500px.jpg" style="margin:5px" /><br /><img alt="Picture from user meeting." src="/SiteCollectionImages/Institutioner/MC2/News/num_IMGP3376_665x330.gif" style="margin:5px" /><br /></div>Thu, 09 May 2019 10:00:00 +0200https://www.chalmers.se/en/news/Pages/Areas-of-Advance-Award-given-to-research-exploring-the-structure-of-proteins.aspxhttps://www.chalmers.se/en/news/Pages/Areas-of-Advance-Award-given-to-research-exploring-the-structure-of-proteins.aspxAreas of Advance Award for exploring the structure of proteins<p><b>​This year&#39;s Areas of Advance Award is given for the development of a unique method of analysing the structure and chemical composition of proteins. Increasing our knowledge of proteins could yield many advances, including the development of new and more effective drugs.</b></p>​The Areas of Advance Award this year goes to Martin Andersson, Pernilla Wittung Stafshede and Fredrik Höök, who combined materials analysis with biology using a clear multidisciplinary approach.<br /><br />“It is very encouraging to have our work highlighted in this way,” says Martin Andersson, who first initiated the research project.<br /><br />He contacted Pernilla Wittung Stafshede and Fredrik Höök to combine research expertise from the three departments of Chemistry and Chemical Engineering, Biology and Biological Engineering and Physics. The aim of the project is to develop a unique method for studying proteins, and thereby open up new knowledge and greater understanding of their functions.<br /><br /><strong>High resolution analysis</strong><br />An important group of proteins, especially when it comes to development of pharmaceuticals, are those found in the membrane of cells. About 60 percent of all pharmaceuticals target membrane-bound proteins, directly or indirectly, which shows their great importance. <br /><br />However, due to these proteins’ need for the cell membrane environment, it is difficult to analyse their structure with established methods, such as X-ray crystallography, magnetic resonance imaging or cryo-electron microscopy.<br /><br />The current project makes use of Atom Probe Tomography instead, with which both the structure and chemical composition of proteins can be observed. The technology offers enormous precision. At present the researchers have shown that it is possible to determine the structure of individual proteins with approximately 1 nanometre resolution. However, the challenge lies in designing a sample preparation method that makes the process faster, and allows to focus on individual proteins, which is the focus of the collaboration.<br /><br />“We still have a lot to learn about proteins, such as those that contribute to ‘misfolding’ diseases like Parkinson's and Alzheimer's. The proteins involved here are very flexible and begin to clump together during illness, but we do not know why and how because they are difficult to study with other methods,” says Pernilla Wittung Stafshede.<br /><br /><strong>New use of an established method</strong><br />Atom Probe Tomography is a well-established technology, but it has mainly been used previously to characterise metals and other hard materials. Applying the method to biological materials, especially proteins, shows an innovative approach. The researchers have continued work to develop and adapt the sample preparation process.<br /><br />“Our project can be described as high-risk – we do not yet know if it will be successful. But if we do succeed, it could potentially be of huge benefit. Getting the Areas of Advance Award is a strong encouragement to continue,” says Fredrik Höök, Professor of Physics.<br /><br />The current project has been financed by the Materials Science Area of Advance.<br />“It is very valuable that Chalmers' Areas of Advance can offer support for early testing of our idea. We need to be able to show preliminary results in order to successfully seek funds from external donors,” says Martin Andersson.<br /><br />Now, the first scientific article has been accepted, and the three researchers hope to expand the project going forward. A first application was made a couple of years ago but was rejected.<br /><br />“But now we have shown that the method works! Sometimes one has to ignore some of the accepted expertise and go on intuition. And then you have to have the opportunity to experiment,” says Martin Andersson.<br /><br /><div><br /> </div> <div><em>Text: Malin Ulfvarson</em></div> <div><em>Photo: Johan Bodell</em></div> <div><br /> </div> <strong>The Areas of Advance Award</strong><br />With the Areas of Advance Award, Chalmers looks to reward those who have made outstanding contributions to cross-border collaborations and who, in the spirit of the Areas of Advance, integrate research, education and utilisation. The award will be given out during the Chalmers doctoral conferment ceremony on 18 May, 2019. <br /><br /><strong>Recipients</strong><br />The project is led by Martin Andersson, Professor at the Department of Chemistry and Chemical Engineering, in collaboration with Professor Pernilla Wittung Stafshede, Biology and Biological Engineering and Professor Fredrik Höök, Physics.<br /><br /><strong>Note</strong><br />Chalmers were international pioneers in the development of Atom Probe Tomography for hard materials, a technology initiated by Professor Hans-Olof Andrén during the 70s. The application of Atom Probe Tomography to study proteins began a few years ago at the Department of Chemistry and Chemical Engineering, by a project group consisting of Dr. Gustav Sundell, Dr. Mats Hulander and doctoral student Astrid Pihl, under the leadership of Professor Martin Andersson.<br /><br /><br /><br /><strong>Previously published news articles about the three prize winners:</strong><br /><br />Martin Andersson: <a href="/en/departments/chem/news/Pages/Skeletal-imitation.aspx">Skeletal imitation reveals how bones grow atom-by-atom</a> (Nov 2018)<br /><br />Pernilla Wittung Stafshede: <a href="/en/departments/bio/news/Pages/Eating-fish-could-prevent-Parkinsons-disease.aspx">Eating fish could prevent Parkinson's disease</a> (May 2018)<br /><br />Fredrik Höök: <a href="/en/departments/physics/news/Pages/75-MSEK-for-developing-target-seeking-biological-pharmaceuticals.aspx">75 MSEK for developing target seeking biological pharmaceuticals</a> (Feb 2017) <br />Tue, 30 Apr 2019 11:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Graphene_sponge_paves_the_way_for_future_batteries.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Graphene_sponge_paves_the_way_for_future_batteries.aspxGraphene sponge paves the way for future batteries<p><b>​To meet the demands of an electric future, new battery technologies will be essential. One option is lithium sulphur batteries, which offer a theoretical energy density roughly five times that of lithium ion batteries. Researchers at Chalmers University of Technology, Sweden, recently unveiled a promising breakthrough for this type of battery, using a catholyte with the help of a graphene sponge. ​​​</b></p><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Graphene%20aerogel%20toppbild%202.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:181px;width:250px" /><div><span style="background-color:initial">The researchers’ novel idea is a porous, sponge-like aerogel, made of reduced graphene oxide, that acts as a free-standing electrode in the battery cell and allows for better and higher utilisation of sulphur. <br /></span><br /></div> <div>A traditional battery consists of four parts. First, there are two supporting electrodes coated with an active substance, which are known as an anode and a cathode. In between them is an electrolyte, generally a liquid, allowing ions to be transferred back and forth. The fourth component is a separator, which acts as a physical barrier, preventing contact between the two electrodes whilst still allowing the transfer of ions. <br /><br /></div> <div>The researchers previously experimented with combining the cathode and electrolyte into one liquid, a so-called ‘catholyte’. The concept can help save weight in the battery, as well as offer faster charging and better power capabilities. Now, with the development of the graphene aerogel, the concept has proved viable, offering some very promising results. <br /><br /></div> <div>Taking a standard coin cell battery case, the researchers first insert a thin layer of the porous graphene aerogel.</div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Carmen%20Cavallo.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:250px;height:218px" />“You take the aerogel, which is a long thin tube, and then you slice it – almost like a salami. You take that slice, and compress it, to fit into the battery,” says Carmen Cavallo of the Department of Physics at Chalmers, and lead researcher on the study. <br /><span style="background-color:initial">Then, a sulphur-rich solution – the catholyte – is added to the battery. The highly porous aerogel acts as the support, soaking </span><span style="background-color:initial">up the solution like a sponge. </span><br /></div> <div>“The porous structure of the graphene aerogel is key. It soaks up a high amount of the catholyte, giving you high enough sulphur loading to make the catholyte concept worthwhile. This kind of semi-liquid catholyte is really essential here. It allows the sulphur to cycle back and forth without any losses. It is not lost through dissolution – because it is already dissolved into the catholyte solution,” says Carmen Cavallo. <br /><br /></div> <div>Some of the catholyte solution is applied to the separator as well, in order for it to fulfil its electrolyte role. This also maximises the sulphur content of the battery. </div> <div>Most batteries currently in use, in everything from mobile phones to electric cars, are lithium-ion batteries. But this type of battery is nearing its limits, so new chemistries are becoming essential for applications with higher power requirements. Lithium sulphur batteries offer several advantages, including much higher energy density. The best lithium ion batteries currently on the market operate at about 300 watt-hours per kg, with a theoretical maximum of around 350. Lithium sulphur batteries meanwhile, have a theoretical energy density of around 1000 to 1500 watt-hours per kg. </div> <div><br /><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Aleksandar%20Matic.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:218px;width:250px" />“Furthermore, sulphur is cheap, highly abundant, and much more environmentally friendly. Lithium sulphur batteries also have the advantage of not needing to contain any environmentally harmful fluorine, as is commonly found in lithium ion batteries,” says Aleksandar Matic, Professor at Chalmers Department of Physics, who leads the research group behind the paper. <br /><br /></div> <div>The problem with lithium sulphur batteries so far has been their instability, and consequent low cycle life. Current versions degenerate fast and have a limited life span with an impractically low number of cycles. But in testing of their new prototype, the Chalmers researchers demonstrated an 85% capacity retention after 350 cycles. <br /><br /></div> <div>The new design avoids the two main problems with degradation of lithium sulphur batteries – one, that the sulphur dissolves into the electrolyte and is lost, and two, a ‘shuttling effect’, whereby sulphur molecules migrate from the cathode to the anode. In this design, these undesirable issues can be drastically reduced. </div> <div><br /></div> <div><span style="background-color:initial">The researchers note, however, that there is still a long journey to go before the technology can achieve full market potential. <br />&quot;Since these batteries are produced in an alternative way from most normal batteries, new manufacturing processes will need to be developed to make them commercially viable,&quot; says Aleksandar Matic.<br /></span><br /></div> <div><span style="background-color:initial">Text: Joshua Worth,<a href="mailto:%20joshua.worth@chalmers.se"> joshua.worth@chalmers.se</a></span></div> <div><span style="background-color:initial">Images: Johan Bodell, <a href="mailto:%20johan.bodell@chalmers.se​">johan.bodell@chalmers.se</a></span></div> <div><span style="background-color:initial"><br /></span></div> <div>Read the article,<a href="https://www.sciencedirect.com/science/article/pii/S0378775319300916?via%3Dihub"> “A free-standing reduced graphene oxide aerogel as supporting electrode in a fluorine-free Li2S8 catholyte Li-S battery,”</a> published in the Journal of Power Sources. ​<span style="background-color:initial"><br /></span></div> <div><h3 class="chalmersElement-H3" style="font-family:&quot;open sans&quot;, sans-serif"><img src="/SiteCollectionImages/Institutioner/F/750x340/Graphene%20Aerogel%20Toppbild.jpg" alt="" style="font-size:14px;font-weight:300;margin:5px" />​​​​<span style="background-color:initial;color:rgb(51, 51, 51);font-family:&quot;open sans&quot;, sans-serif;font-size:14px;font-weight:300">The reduced graphene oxide aerogel developed by the researchers, that makes the catholyte concept viable.</span></h3></div> <div>​<br /><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">M</span><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">ore about the Chalmers lab used in this research </span></div> <div>The researchers investigated the structure of the graphene aerogel at the <a href="/en/researchinfrastructure/CMAL/Pages/default.aspx">Chalmers Materials Analysis Laboratory (CMAL)​</a>. CMAL has advanced instruments for material research. The laboratory formally belongs to the Department of Physics, but is open to all researchers from universities, institutes and industry. The experiments in this study have been carried out using advanced and high-resolution electron microscopes.</div> <div>Major investments, totalling around 66 million Swedish kronor have recently been made to further push CMAL to the forefront of material research.</div> <div>The investments included the purchase of a monochromated and double aberration corrected (CETCOR image and ASCOR probe Cs-correctors) TEM JEOLARM (200 kV) 40-200, equipped with a field emission gun (FEG). This was the first paper to be published with the use of this brand-new microscope, which was used to investigate the structure of the aerogel. <br /><br /></div> <div><a href="/en/departments/physics/news/Pages/Come-and-experience-Chalmers’-unique-electron-microscope.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />The new electron microscope, which weighs as much as a full grown elephant, will be formally inaugurated on 15 May in a ceremony at Chalmers. </a></div> <div>The Knut and Alice Wallenberg Foundation has contributed around half of the investments.</div> <div><br /></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">For more information, contact:</span><br /></div> <div><strong><a href="/en/Staff/Pages/Carmen-Cavallo.aspx">Carmen Cavallo</a></strong>, <span style="background-color:initial">Researcher, Department of Physics, Chalmers University of Technology, </span><span style="background-color:initial">+46 31 772 33 10, </span><span style="background-color:initial"><a href="mailto:carmen.cavallo@chalmers.se">carmen.cavallo@chalmers.se​</a></span></div> <div><br /></div> <div><strong><a href="/en/staff/Pages/Aleksandar-Matic.aspx">Aleksandar Matic​</a></strong>, P<span style="background-color:initial">rofessor, Department of Physics, Chalmers University of Technology, </span><span style="background-color:initial">+46 31 772 51 76, </span><span style="background-color:initial"><a href="mailto:matic@chalmers.se">matic@chalmers.se </a></span></div>Mon, 29 Apr 2019 07:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Come-and-experience-Chalmers’-unique-electron-microscope.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Come-and-experience-Chalmers%E2%80%99-unique-electron-microscope.aspxCome and experience Chalmers’ unique electron microscope<p><b>​It is the only one of its kind in the world, it weighs about the same as a full-grown bull elephant and it allows us to explore the world of individual atoms.Chalmers&#39; new electron microscope enables researchers to study and design the smart materials of the future – and on the 15 May it is time for the great unveiling.​</b></p><div><span style="background-color:initial">The event will be open to both r</span><span style="background-color:initial">esearchers and members of the public who want to learn more about the new microscope and the opportunities it will create. Researchers from near and far will come to get acquainted with the advanced equipment and make new connections. Special invitees include members of a European network for electron microscopy, in which Chalmers is involved. There are also several leading researchers in the field from Europe and the rest of the world.<br /></span><br /></div> <div>But first, let us rewind a little – to a snowy day in February 2018, when a truck, loaded with 100 boxes, arrived at Chalmers campus Johanneberg. Eager researchers watched as the precious, long-awaited packages were loosened. There were worries that the lift might not even be able to cope with the weight, but it managed. Almost a year of assembly, installation and adjustment followed, and now the microscope, which weighs five tonnes, is in place at Chalmers Material Analysis Laboratory (CMAL). It sits in a disturbance-protected room with adapted temperature and air conditions and is available to researchers in both the academy and industry.<br /><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/IMG_1755EvaOlsson_01_350x.jpg" class="chalmersPosition-FloatRight" alt="" style="background-color:initial" />“It is great that we can now start all the experiments we have planned – we have a long wish list. When we can study and control different materials, right down to the atomic level, a whole universe of possibilities opens. For example, we can produce more healthy foods, smarter solar cells and more environmentally-friendly textiles and paper,” says Physics Professor Eva Olsson, who is responsible for the microscope project at Chalmers.<br /><br /></div> <div>She has worked hard for Chalmers to be able to buy a total of three advanced electron microscopes that open up new possibilities in soft microscopy. What is now being inaugurated is a transmission electron microscope (TEM) made in Japan by JEOL, by far the standout of the three. The total investment is around 66 million Swedish kronor, of which the Knut and Alice Wallenberg Foundation has contributed half.</div> <div>What is unique about the new, large TEM is its very high spatial and energy resolution. It means it is possible to see how individual atoms are arranged in a material. Through analysis of the different signals coming from the studied materials, it is possible to understand how the arrangement of atoms is correlated to the properties of the material.<br /><br /></div> <div>Although the new microscope has not been formally opened yet, it has already been put to use in certain ways. Professor of physics Aleksandar Matic, and researcher Carmen Cavallo, published an article on how they managed to produce a cathode material for lithium sulphur batteries, based on graphene, allowing for higher energy content and longer lifespan. They investigated the structure of the cathode material using the new microscope. Meanwhile, Eva Olsson's research group has also developed the knowledge about how to make solar cell nanowires more efficient. And with the help of one of the new microscopes, researchers also managed to show that it is possible to melt gold at room temperature.<br /><br /></div> <div>In the future, the microscope will pave the way for new results about a wide spectrum of materials ranging from  food, materials for health and energy to atomically-thin materials, catalysts and quantum computers. The microscope is beneficial for many different research groups at Chalmers, and externally.</div> <div>“When we can optimise different materials so that they behave exactly as we want them to, in as small a size as possible, we can make important progress. This is true for both material science and technology development. In this work we can also contribute to better health and a sustainable environment,” says Eva Olsson. </div> <div><br /></div> <div>Eva Olsson will lead the opening ceremony, but she can also reveal that even Chalmers' founder, William Chalmers, seems to have gained a new lease of life thanks to the excitement of the new microscope. It might just be the case that he too will be on hand to help moderate the ceremony, which will include exciting lectures, insight into the world of the microscope and many opportunities for networking and meeting future contacts.<br /><br /></div> <div>Text: Mia Halleröd Palmgren and Joshua Worth<br /><br /></div> <h3 class="chalmersElement-H3"><a href="/en/departments/physics/calendar/Pages/Inauguration_electronmicroscope_190515.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the opening ceremony and register here​</a></h3> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Bildcollage_750x230webbkalnedern.jpg" alt="collage" /><br /></div> <div><br /></div> <h3 class="chalmersElement-H3">More about electron microscopy and soft microscopy </h3> <div><span style="background-color:initial">Electron microscopy is a collective term for various types of microscopy using electrons instead of electromagnetic radiation to produce images of very small objects. With the help of this technique, one can pass the resolution of visible light, which makes it possible to study individual atoms.</span><br /></div> <div>With soft microscopy, the electrons that examine the material have lower energy than in an ordinary electron microscope. It makes it possible to explore delicate organic materials such as foods, textiles or tissues, right down to the atomic level, without the material losing its structure.</div> <div>There are different types of electron microscopes, such as transmission electron microscopes (TEM), scanning transmission electron microscopes (STEM), scanning electron microscopes (SEM) and combined Focused Ion Beam and SEM (FIB-SEM).</div> <div><br /></div> <div><a href="http://www.chalmers.se/sv/institutioner/fysik/nyheter/Sidor/33-miljoner-till-unika-mikroskop.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />33 million for unique microscopes</a></div> <div><a href="/en/departments/physics/news/Pages/How-to-design-smart-materials-for-the-future.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to design smart materials for the future</a></div> <div><a href="/en/departments/physics/news/Pages/Fine-tuning-at-the-atomic-level-can-result-in-better-catalysts-and-a-cleaner-environment.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Better catalysts with the help of minimal atomic adjustments </a></div> <div><a href="/en/departments/physics/news/Pages/How-gold-can-melt-at-room-temperature-.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to melt gold at room temperature</a></div>Thu, 25 Apr 2019 00:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Tailor-made-materials-with-ultrafast-connections.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Tailor-made-materials-with-ultrafast-connections.aspxTailor-made materials with ultrafast connections<p><b>Through magic twist angles and unique energy states, it is possible to design tailor-made, atomically thin materials that could be invaluable for future electronics. Now, researchers at Chalmers University of Technology, Sweden, and Regensburg University in Germany have shed light on the ultrafast dynamics in these novel materials. The results were recently published in the prestigious journal Nature Materials.​​​</b></p><div><div>Imagine you are building an energy-efficient and super-thin solar cell. You have one material that conducts current and another that absorbs light. You must therefore use both materials to achieve the desired properties, and the result may not be as thin as you hoped.</div> <div><br /></div> <div>Now imagine instead that you have atomically thin layers of each material, that you place on top of each other. You twist one layer towards the other a certain amount, and suddenly a new connection is formed, with special energy states – known as interlayer excitons – that exist in both layers. You now have your desired material at an atomically thin level.</div> <div><br /></div> <div>Ermin Malic, researcher at Chalmers University of Technology, in collaboration with German research colleagues around Rupert Huber at Regensburg University, has now succeeded in showing how fast these states are formed and how they can be tuned through twisting angles. Stacking and twisting atomically thin materials like Lego bricks, into new materials known as ‘heterostructures’, is an area of research that is still at its beginning.</div></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/ErminMalic_190415_05_350xwebb.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /><div>“These heterostructures have tremendous potential, as we can design tailor-made materials. The technology could be used in solar cells, flexible electronics, and even possibly in quantum computers in the future,” says Ermin Malic, Professor at the Department of Physics at Chalmers.</div> <div><br /></div> <div>Ermin Malic and his doctoral students Simon Ovesen and Samuel Brem recently collaborated with researchers at Regensburg University. The Swedish group has been responsible for the theoretical part of the project, while the German researchers conducted the experiments. For the first time, with the help of unique methods, they succeeded in revealing the secrets behind the ultrafast formation and dynamics of interlayer excitons in heterostructure materials. They used two different lasers to follow the sequence of events. By twisting atomically thin materials towards each other, they have demonstrated that it is possible to control how quickly the exciton dynamics occurs.</div> <div><br /></div> <div>“This emerging field of research is equally fascinating and interesting for academia as it is for industry,” says Ermin Malic. He leads the Chalmers Graphene Centre, which gathers research, education and innovation around graphene, other atomically thin materials and heterostructures under one common umbrella.</div> <div><br /></div> <div>These kinds of promising materials are known as two-dimensional (2D) materials, as they only consist of an atomically thin layer. Due to their remarkable properties, they are considered to have great potential in various fields of technology. Graphene, consisting of a single layer of carbon atoms, is the best-known example. It is starting to be applied in industry, for example in super-fast and highly sensitive detectors, flexible electronic devices and multifunctional materials in  automotive, aerospace and packaging industries.</div> <div><br /></div> <div>But graphene is just one of many 2D materials that could be of great benefit to our society. There is currently a lot of discussion about heterostructures consisting of graphene combined with other 2D materials. In just a short time, research on heterostructures has made great advances, and the journal Nature has recently published several breakthrough articles in this field of research. </div> <div><br /></div> <div>At Chalmers, several research groups are working at the forefront of graphene. The Graphene Centre is now investing in new infrastructure in order to be able to broaden the research area to include other 2D materials and heterostructures as well.</div> <div><br /></div> <div>“We want to establish a strong and dynamic hub for 2D materials here at Chalmers, so that we can build bridges to industry and ensure that our knowledge will benefit society,” says Ermin Malic.</div></div> <div>​<br /></div> <div></div> <div><span style="background-color:initial">Text and image: Mia Halleröd Palmgren, </span><a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se</a><br /></div> <div>Translation to English: Joshua Worth,<a href="mailto:%20joshua.worth@chalmers.se"> joshua.worth@chalmers.se</a></div> <div><br /></div> <div>Read the scientific paper <span style="background-color:initial"><a href="https://www.nature.com/articles/s41563-019-0337-0">Ultrafast transition between exciton phases in van der Waals heterostructures</a> </span><span style="background-color:initial">in Nature Materials.</span></div> <div><span style="background-color:initial"><br /></span></div> <div><div><a href="https://idw-online.de/en/news713803"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release from Regensburg University, Germany. </a></div> <div><br /></div> <div><a href="/sv/centrum/graphene/Sidor/default.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the Graphene Centre at Chalmers (GCC)</a></div> <span style="background-color:initial"></span></div> <div><br /></div> <h3 class="chalmersElement-H3">For more information: </h3> <div><a href="/sv/personal/Sidor/ermin-malic.aspx">Ermin Malic,​</a> Professor, Department of Physics and Director of the Graphene Centre, Chalmers University of Technology, Sweden, +46 31 772 32 63, +46 70 840 49 53, <a href="mailto:ermin.malic@chalmers.se">ermin.malic@chalmers.se​</a></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/SamuelBremErminMalic_20190415_bannerwebb.jpg" alt="" style="margin:5px" /><br />Professor Ermin Malic (to the right) and his doctoral students Samuel Brem (left) and <span style="background-color:initial">Simon Ovesen (not pictured) r</span><span style="background-color:initial">ecently collaborated with researchers at Regensburg University. The Swedish group has been responsible for the theoretical part of the project, while the German researchers conducted the experiments.</span><span style="background-color:initial"> </span><span style="background-color:initial">​</span></div> <span></span><div><span style="background-color:initial"></span></div>Wed, 17 Apr 2019 07:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/Worlds-fastest-hydrogen-sensor-could-pave-the-way-for-clean-hydrogen-energy.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/Worlds-fastest-hydrogen-sensor-could-pave-the-way-for-clean-hydrogen-energy.aspxWorld&#39;s fastest hydrogen sensor could pave the way for clean energy<p><b>Hydrogen is a clean and renewable energy carrier that can power vehicles, with water as the only emission. Unfortunately, hydrogen gas is highly flammable when mixed with air, so very efficient and effective sensors are needed. Now, researchers from Chalmers University of Technology, Sweden, present the first hydrogen sensors ever to meet the future performance targets for use in hydrogen powered vehicles.</b></p><div><p class="chalmersElement-P">​<span style="background-color:initial">The researchers’ ground-breaking results were recently <a href="https://www.nature.com/articles/s41563-019-0325-4">published in the prestigious scientific journal Nature Materials.​</a> The discovery is an optical nanosensor encapsulated in a plastic material. The sensor works based on an optical phenomenon – a plasmon – which occurs when metal nanoparticles are illuminated and capture visible light. The sensor simply changes colour when the amount of hydrogen in the environment changes.</span></p> <p class="chalmersElement-P">The plastic around the tiny sensor is not just for protection, but functions as a key component. It increases the sensor’s response time by accelerating the uptake of the hydrogen gas molecules into the metal particles where they can be detected. At the same time, the plastic acts as an effective barrier to the environment, preventing any other molecules from entering and deactivating the sensor. The sensor can therefore work both highly efficiently and undisturbed, enabling it to meet the rigorous demands of the automotive industry – to be capable of detecting 0.1 percent hydrogen in the air in less than a second.</p> <img src="/SiteCollectionImages/Institutioner/F/350x305/Ferry_portratt_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:216px;width:250px" /><p class="chalmersElement-P">“We have not only developed the world's fastest hydrogen sensor, but also a sensor that is stable over time and does not deactivate. Unlike today's hydrogen sensors, our solution does not need to be recalibrated as often, as it is protected by the plastic,” says Ferry Nugroho, a researcher at the Department of Physics at Chalmers.</p> <p class="chalmersElement-P">It was during his time as a PhD student that Ferry Nugroho and his supervisor Christoph Langhammer realised that they were on to something big. After reading a scientific article stating that no one had yet succeeded in achieving the strict response time requirements imposed on hydrogen sensors for future hydrogen cars, they tested their own sensor. They realised that they were only one second from the target – without even trying to optimise it. The plastic, originally intended primarily as a barrier, did the job better than they could have imagined, by also making the sensor faster. The discovery led to an intense period of experimental and theoretical work.</p> <p class="chalmersElement-P">“In that situation, there was no stopping us. We wanted to find the ultimate combination of nanoparticles and plastic, understand how they worked together and what made it so fast. Our hard work yielded results. Within just a few months, we achieved the required response time as well as the basic theoretical understanding of what facilitates it,” says Ferry Nugroho.</p> <p class="chalmersElement-P">Detecting hydrogen is challenging in many ways. The gas is invisible and odourless, but volatile and extremely flammable. It requires only four percent hydrogen in the air to produce oxyhydrogen gas, sometimes known as knallgas, which ignites at the smallest spark. In order for hydrogen cars and the associated infrastructure of the future to be sufficiently safe, it must therefore be possible to detect extremely small amounts of hydrogen in the air. The sensors need to be quick enough that leaks can be rapidly detected before a fire occurs.</p> <img src="/SiteCollectionImages/Institutioner/F/350x305/ChristophLanghammerfarg350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:216px;width:250px" /><p class="chalmersElement-P">​“It feels great to be presenting a sensor that can hopefully be a part of a major breakthrough for hydrogen-powered vehicles. The interest we see in the fuel cell industry is inspiring,” says Christoph Langhammer, Professor at Chalmers Department of Physics.</p> <p class="chalmersElement-P">Although the aim is primarily to use hydrogen as an energy carrier, the sensor also presents other possibilities. Highly efficient hydrogen sensors are needed in the electricity network industry, the chemical and nuclear power industry, and can also help improve medical diagnostics.</p> <p class="chalmersElement-P">“The amount of hydrogen gas in our breath can provide answers to, for example, inflammations and food intolerances. We hope that our results can be used on a broad front. This is so much more than a scientific publication,” says Christoph Langhammer.</p> <p class="chalmersElement-P">In the long run, the hope is that the sensor can be manufactured in series in an efficient manner, for example using 3D printer technology.<br /><br /></p> <div><strong>Text: </strong><span style="background-color:initial">Mia Halleröd Palmgren,</span><span style="background-color:initial"> </span><a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se</a> and <span style="background-color:initial">Joshua Worth,</span><a href="mailto:joshua.worth@chalmers.se"> joshua.worth@chalmers.se</a><span style="background-color:initial">​ </span></div> <div><strong>Image</strong> of C<span style="background-color:initial">hristoph</span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"> Langhammer: Henrik Sandsjö</span><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><strong>Illustration</strong> of the sensor technique: </span><span style="background-color:initial">Ella Marushchenko<br /></span><span style="background-color:initial">Images of Ferry Nugroho, the sensor and the group picture: Mia Halleröd Palmgren​</span></div></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/Vatgassensor_750x340.jpg" alt="" style="color:rgb(33, 33, 33);font-family:&quot;open sans&quot;, sans-serif;font-size:24px;background-color:initial;margin:5px" /> ​</div> <h4 class="chalmersElement-H4"><span>Facts: The world's fastest hydrogen sensor​</span><span>​</span></h4> <div><span style="color:rgb(33, 33, 33);font-family:&quot;open sans&quot;, sans-serif;background-color:initial"><br /></span></div> <div><ul><li><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/vätgassensor_amerikansk_illu350x460.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:250px;height:324px" /><span style="background-color:initial">The Chalmers-developed sensor is based on an optical phenomenon – a plasmon – which occurs when metal nanoparticles are illuminated and capture light of a certain wavelength.</span></li> <li><span style="background-color:initial"></span>The optical nanosensor contains millions of metal nanoparticles of a palladium-gold alloy, a material which is known for its sponge-like ability to absorb large amounts of hydrogen. The plasmon phenomenon then causes the sensor to change colour when the amount of hydrogen in the environment changes.</li> <li>The plastic around the sensor is not only a protection, but also increases the sensor’s response time by facilitating hydrogen molecules to penetrate the metal particles more quickly and thus be detected more rapidly. At the same time, the plastic acts as an effective barrier to the environment because no other molecules than hydrogen can reach the nanoparticles, which prevents deactivation.</li> <li>The efficiency of the sensor means that it can meet the strict performance targets set by the automotive industry for application in hydrogen vehicles of the future by being capable of detecting 0.1 percent hydrogen in the air in less than one second.</li> <li>The research was funded by the Swedish Foundation for Strategic Research, within the framework of the Plastic Plasmonics project.​<br /><br /></li></ul> <div><div></div></div></div> <div> </div> <h4 class="chalmersElement-H4">About the scientific article: </h4> <div> </div> <div><span style="background-color:initial">The article</span><span style="background-color:initial"> </span><a href="https://www.nature.com/articles/s41563-019-0325-4">”Metal – Polymer Hybrid Nanomaterials for Plasmonic Ultrafast Detection” ​</a><span style="background-color:initial">has been published in Nature Materials and is written by Chalmers researchers Ferry Nugroho, Iwan Darmadi, Lucy Cusinato, Anders Hellman, Vladimir P. Zhdanov and Christoph Langhammer. The results have been developed in collaboration with Delft Technical University in the Netherlands, the Technical University of Denmark and the University of Warsaw, Poland.</span><span style="background-color:initial">​</span></div> <div> </div> <div><br /></div> <div> </div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/Vatgassensor_forskarnabakom_20190404_750x340.jpg" alt="" style="margin:5px" /><br /> <span style="background-color:initial">Chalmers researchers</span><span style="background-color:initial"> ​</span><span style="background-color:initial">F</span><span style="background-color:initial">erry Nugroho, Iwan Darmadi, Christoph Langhammer, Lucy Cusinato och Anders Hellman. </span></div> <span></span><div></div> <div> </div> <div><br /></div> <div> </div> <div><h4 class="chalmersElement-H4" style="font-family:&quot;open sans&quot;, sans-serif">For more information:​</h4> <div><a href="/en/Staff/Pages/Ferry-Anggoro-Ardy-Nugroho.aspx">Ferry Nugroho</a>, <span></span>Researcher, Department of Physics, Chalmers University of Technology, +46 31 772 54 21, <a href="mailto:ferryn@chalmers.se">ferryn@chalmers.se</a><br /><br /></div> <div><a href="/sv/personal/Sidor/Christoph-Langhammer.aspx">Christoph Langhammer</a>, Professor, Department of Physics, Chalmers University of Technology, +46 31 772 33 31, ​ <a href="mailto:clangham@chalmers.se">clangham@chalmers.se</a></div></div>Thu, 11 Apr 2019 07:00:00 +0200