News: Fysik related to Chalmers University of TechnologyThu, 21 Mar 2019 14:51:54 +0100 towards a tsunami of light<p><b>​​Researchers at Chalmers University of Technology and the University of Gothenburg, Sweden, have proposed a way to create a completely new source of radiation. Ultra-intense light pulses consist of the motion of a single wave and can be described as a tsunami of light. The strong wave can be used to study interactions between matter and light in a unique way. Their research is now published in the scientific journal Physical Review Letters. ​​​​​</b></p><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/IlliaThiele_190312_01_beskuren_webb.jpg" alt="" style="margin:5px;width:150px;height:224px" /><span style="background-color:initial"><div>“This source of radiation lets us look at reality through a new angle – it is like twisting a mirror and discovering something completely different,” says Illia Thiele, a theoretical physicist at Chalmers University of Technology. <br /></div> <div> </div> <div>Together with Dr Evangelos Siminos at the University of Gothenburg, and Tünde Fülöp, Professor of Physics at Chalmers, Illia Thiele now presents a theoretical method for creating the fastest possible single wave motion. This kind of radiation has never yet been observed in the universe or even the lab.<br /></div> <div> </div> <div>The radiation source is interesting for understanding the properties of different materials. Since it offers an ultra-fast switching of light matter interactions, it can be useful in material science, or sensor related research, for example. Moreover, it can be used as a driver for other types of radiation, and to push the limits of how short a light pulse could be. <br /></div> <div> </div> <div>“An ultra-intense pulse is like a great tsunami of light. ​The wave can pull an electron out of an atom, accelerating it to almost the speed of light, creating exotic quantum states. This is the fastest and strongest switch possible, and it paves the way for advances in fundamental research,” says Dr Illia Thiele. <br /></div> <div> </div> <div><span><span style="background-color:initial"><img src="/en/departments/physics/news/Documents/siminos_large.jpg_webb_300x450.jpg" alt="siminos_large.jpg_webb_300x450.jpg" class="chalmersPosition-FloatRight" style="margin:5px;width:150px;height:225px" /></span></span>The new pulses can be used to probe and control matter in unique ways. While other light pulses, with multiple wave periods, impose changes in the material properties gradually, pulses with a single strong wave period cause sudden and unexpected reactions. <br /><br />&quot;The uniqueness of our method lies in the fact that an indestructible medium <span><span style="background-color:initial">–<span style="display:inline-block"></span></span></span> an electron beam <span><span style="background-color:initial">–<span style="display:inline-block"></span></span></span> is used as an amplifier, allowing more intense pulses to be created,&quot; says Evangelos Siminos, Assistant Professor at the University of Gothenburg.<br /></div> <div><span style="background-color:initial"></span> </div> </span><span style="background-color:initial"><div>Researchers worldwide have tried to create this source of radiation, since it is of high interest for the scientific communities within physics and material science.  <br /></div> <div> </div> <div><span><span style="background-color:initial"><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/TundeFulop_180829_270x.jpg" alt="" style="margin:5px;width:150px;height:223px" /><span style="background-color:initial"></span></span></span>“Now, we hope to be able to bring our theoretical setup to the lab. Our method could help close the existing gaps in the scientific landscape of light sources,” says Tünde Fülöp, Professor of Physics at Chalmers. <br /> </div> <div>Read the scientific paper <a href="">Electron beam driven generation of frequency-tunable isolated relativistic sub-cycle pulses ​</a>in Physical Review Letters. ​<br /></div> <div> </div> <div>Text: Mia Halleröd Palmgren, <a href=""></a></div> <div><span style="background-color:initial">Photo of Tünde Fülöp: </span><span style="background-color:initial">Johan Bodell</span><br /></div> <div>Photo of Illia Thiele: Mia Halleröd Palmgren ​<span style="background-color:initial">​</span><br /></div> <div><span style="background-color:initial">Photo of Evangelos Siminos: Adam Stahl</span></div> <div><br /> </div> <h4 class="chalmersElement-H4">The new method to create ultra-intense light pulses</h4> <div>The researchers propose a method for the generation of ultra-intense light pulses containing less than a single oscillation of the electromagnetic field. These so-called sub-cycle pulses can be used to probe and control matter in unique ways. Conventional methods can only produce sub-cycle pulses of limited field strength: above a certain threshold the amplifying medium would be ionized by the intense fields. The researchers propose to use an electron beam in a plasma, which is not subject to a damage threshold, as an amplifying medium for a seed electromagnetic pulse. To ensure that energy is transferred from the electron beam to the pulse in such a way that a sub-cycle pulse is produced, the beam needs to be introduced at an appropriate phase of the oscillation of the electromagnetic field. This can be achieved by using a mirror to reflect the seed pulse while the electron beam is being injected. This scenario leads to significant amplification of the seed pulse and the formation of an intense, isolated, sub-cycle pulse. Readily available terahertz seed pulses and electron bunches from laser-plasma accelerators could generate mid-infrared sub-cycle pulses with millijoule-level energies, which are highly desirable as probes of matter but not possible to produce with conventional sources.</div> <div><br /> </div> <h4 class="chalmersElement-H4">For more information: </h4> <div><a href="">Illia Thiele</a>, Postdoctoral researcher, Department of Physics, Chalmers University of Technology, +46 76 607 82 79,<a href=""></a><br /></div> <div> </div> <div><span style="background-color:initial"><a href="/en/staff/Pages/Tünde-Fülöp.aspx">Tünde Fülöp,​</a> Professor, Department of Physics, Chalmers University of Technology, +46 72 986 74 40, </span><a href=""></a></div> <div><br /><a href=";disableRedirect=true&amp;returnUrl=;userId=xsimev">Evangelos Siminos</a>, Assistant Professor, Department of Physics, University of Gothenburg</div></span><div><span style="background-color:initial">+46 31 786 9161, <a href=""></a></span></div>Tue, 19 Mar 2019 07:00:00 +0100 students awarded for a promising foetal monitoring method<p><b>​Two master&#39;s students at Chalmers have developed a method for distinguishing a foetus&#39;s heartbeat from the mother’s. It is based on analysing electrical signals that are present naturally in the skin of the mother. These are picked up by electrodes. The method is potentially more reliable and easier to use than current foetal monitoring using a CTG device. The students have been awarded the Bert-Inge Hogsved Prize for Best Entrepreneurship by the Forum for Engineering Physicists at Chalmers. ​</b></p><div><span style="background-color:initial;display:none"></span><img src="/SiteCollectionImages/Institutioner/F/350x305/hogsvedspris_albinodavid_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="background-color:initial" /><span style="background-color:initial">“Cardiotocography, or CTG, is a well-established monitoring method in maternity care. However, it is not always reliable. There is a risk that signals are picked up from the mother's heart rather than the foetus’s, which can have serious consequences. Our way of measuring is potentially more precise, thanks to the advanced electrodes that are now available. We can measure and, using our specially developed analysis, distinguish the foetus’s heartbeat, which can be hundreds of times weaker than the mother’s at the end of pregnancy,” says Albin Annér, one of the prizewinners.        </span></div> <div> </div> <div>The electrodes measure electrical fields in the skin. Unlike with a CTG device, however, they need not be fixed directly onto the skin. The mother does not have to be closely connected to a device, giving her greater freedom of movement. The method is also completely harmless because no current flows between the mother and the electrodes. </div> <div> </div> <div>“Their method is very promising. It could reduce the uncertainties around foetal monitoring and make maternity care safer and simpler in Sweden and internationally,” says Peter Apell, Professor of Living State Physics at Chalmers and the students' co-supervisor with Senior Lecturer Lars Hellberg. </div> <div> </div> <div>The two students are developing the concept as part of the Master's programme in Applied Physics at Chalmers. They are now working on developing a solution suitable for use in a clinical study.</div> <div> </div> <div>“The goal is for our method to replace CTG devices in the long term. The equipment will be lighter, considerably cheaper and smaller, which means it will be more widely available and easily portable. It will be able to be used not only in hospitals but also out in the field, for example in countries with poor access to established healthcare services,” says David Kastö, fellow prizewinner and student with Albin Annér.</div> <div> </div> <div>The prize was established in 2011 by Bert-Inge Hogsved, founder and CEO of the Hogia Group and himself an engineering physicist. Students in engineering physics, engineering mathematics or chemical engineering with physics at Chalmers are eligible for the annual prize. It aims to recognise entrepreneurial initiative among students.</div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release from Hogiagruppen.​​</a><br /></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/hogsvedpris_alla_hogupplost750x340.jpg" alt="" style="margin:5px" /><span style="background-color:initial"> </span><span style="background-color:initial">Bert-Inge Hogsved, founder of the prize, together with the awarded physics </span><span style="background-color:initial">master's students </span><span style="background-color:initial">David Kastö and</span><span style="background-color:initial"> </span><span style="background-color:initial">Albin Annér. The </span><span style="background-color:initial">Head of the Department of Physics at Chalmers, </span><span style="background-color:initial">Thomas Nilsson,</span><span style="background-color:initial"> </span><span style="background-color:initial">attended </span><span style="background-color:initial">th</span><span style="background-color:initial">e prize ceremony. </span></div> <span></span><div></div> <div></div> <div>Foto: Marie Vassiliadis ​</div> <div><br /></div>Tue, 12 Mar 2019 00:00:00 +0100's-programme-in-Physics-to-face-the-unknown.aspx's-programme-in-Physics-to-face-the-unknown.aspxA new master&#39;s programme in Physics to face the unknown<p><b>​How do you face and solve unknown challenges in the future? One way of developing such skills is to study physics at a Master&#39;s level at Chalmers. This autumn a new master’s programme in physics will start. It will focus on creative thinking, critical evaluation and problem solving/engineering skills.</b></p><div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Anders_Hellman.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:0px 10px;width:75px;height:99px" />“The students will learn how to identify relevant experimental and theoretical methods and how to apply these to problem solving across a wide range of disciplines or multi-disciplinary fields,” says Anders Hellman, Director of the Master's Programme and Professor at the Department of Physics at Chalmers.</span><br /></div> <div><br /></div> <div>The new programme offers a progressive platform in theoretical, computational and experimental physics. Particular emphasis is placed on astronomy, biological physics, high-energy physics and material science. </div> <div>The new programme will replace the two master’s programmes Applied Physics and Physics and Astronomy.</div> <div><br /></div> <div><a href="/en/education/programmes/masters-info/Pages/Physics.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the Master's programme &quot;Physics</a>&quot;.</div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read about the courses.</a></div> <div><a href="/en/news/Pages/new-masters-programmes-focus-on-the-future-in-digitalisation.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read the news article &quot;<span style="background-color:initial">New Master’s programmes focus on the future in digitalisation&quot;</span>​</a></div> <div><div></div></div>Wed, 06 Mar 2019 00:00:00 +0100 Master’s programmes focus on the future in digitalisation<p><b>​Three new Master’s programmes start at Chalmers this autumn – Data Science, High-Performance Computer Systems and Physics. In different ways, all three programmes focus on the needs and solutions of our digitalised future.</b></p>​<span style="background-color:initial">The demand for skills in data science and artificial intelligence is heavily increasing. Courses in these subjects already exist in programmes at Chalmers, but with the extensive interest from both students and industry, the Master’s programme <em>Data Science</em> has now been created. It specifically focuses on increased digitalisation. </span><div><br /><span style="background-color:initial"></span><div>The interest in Chalmers programmes in Computer Science has also increased during the last few years. To meet the high demand, a new programme called <em>High-Performance Computer Systems</em> will start. The programme aims to give students cutting-edge expertise in computer systems engineering, with a focus on the future use of computing.</div> <div><br /></div> <div>“The interest in our two new Master’s programmes is great, both here at Chalmers, and externally from industry. The great social upheaval that is made possible by digitalisation is leading to an increased need for qualified competence in Computer Science. I believe that the development of this type of education has only begun”, says Jörgen Blennow, Dean of Education for the educational area Electric, Computer, IT and Industrial Engineering at Chalmers. </div> <div><br /></div> <div>At the educational area for Physics, the two Master’s programmes <em>Applied Physics</em> and <em>Physics and Astronomy</em> have been the base for a whole new programme, called <em>Physics</em>. Anders Hellman, Director of the new Master's programme, says that with a new, creatively developed programme and new courses, they want to give the students more than just the skills needed in the industry today, thereby preparing them for a digitalised future.</div> <div><br /></div> <div>“The students will receive knowledge in the areas of physics that in different ways are key to the advanced technologies of today and tomorrow. We want the students to get generic and long-term knowledge in physics that not only helps them with solutions for the needs of today, but that also prepares them for the challenges of the future industry, challenges that we cannot even foresee today.”</div> <div><br /></div> <div>The programme offers five specialisations – <em>Astronomy, Biological Physics, Computational Physics, High-energy Physics</em> and <em>Materials Science</em>. The programmes <em>Applied Physics</em> and <em>Physics and Astronomy</em> close when the new programme starts.</div> <div><br /></div> <div>For international students, two of the new Master’s programmes that start in autumn 2019 are still open for late application – <em>High Performance Computer Systems</em> and <em>Physics</em>. Learn more about this on the programmes’ respective webpages. </div> <div><br /></div> <div>Read more about the new Master’s programmes:</div> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /></a> <a href="/en/education/programmes/masters-info/Pages/Data-Science.aspx">Data Science</a></div> <div><a href="/en/education/programmes/masters-info/Pages/Data-Science.aspx"></a><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /></a> <a href="/en/education/programmes/masters-info/Pages/High-Performance-Computer-Systems.aspx">High-Performance Computer Systems</a></div> <div><a href="/en/education/programmes/masters-info/Pages/High-Performance-Computer-Systems.aspx"></a><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /></a> <a href="/en/education/programmes/masters-info/Pages/Physics.aspx">Physics</a></div> <div><div><br /></div></div> <div><div><em><br /></em></div> <div><em>Text: Sophia Kristensson</em></div> <div><em>Photo: Anna-Lena Lundqvist</em></div></div></div>Mon, 18 Feb 2019 14:00:00 +0100 a successful PhD thesis: They know how to find the flow<p><b>​Writing a doctoral thesis is a complex task. Besides the requirements of high scientific and pedagogic quality, a thesis should also be accessible to the reader. At best, it should be enjoyable to read – like a well written novel. But how do you do it? We asked Sophie Viaene and Ferry Nugroho, who wrote the best doctoral theses at the Department of Physics at Chalmers in 2018.</b></p><div><h5 class="chalmersElement-H5"><span>Sophie Viaene:</span></h5> <h2 class="chalmersElement-H2"><span>“Doing science is like making a journey”</span></h2></div> <div><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/SophieViaene_2019_webb.jpg" alt="" style="margin:5px;width:150px;height:200px" />Sophie Viaene has used techniques from general relativity, condensed matter physics, and nonlinear dynamics to describe advanced electromagnetic phenomena inside structured artificial materials, so called metamaterials. By controlling the behaviour ​of light inside such materials, her work paves the way for future light-based applications. F<span style="background-color:initial">or example, the materials can be used in optical chips to achieve reliable data delivery on the internet, or to speed up routers.</span><span style="background-color:initial">​</span></div> <div><br /> </div> <div>Sophie Viaene has been a double degree doctoral student at Chalmers and Vrije Universiteit Brussel. She had an <a href="/sv/institutioner/fysik/kalendarium/Sidor/Open_thesis_review_Sophie.aspx">open thesis review at Chalmers</a> i<span style="background-color:initial">n May 2018, </span><span style="background-color:initial">followed by the </span><a href="">thesis defence in Brussels</a><span style="background-color:initial"> in June.</span></div> <span></span><div></div> <div>The title of her work is <em>Exploring metamaterial horizons:  New concepts and geometrical tools for the description of advanced electromagnetic phenomena</em>.</div> <div><br /> </div> <div> <img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/F/350x305/Philippe_Tassin_350x305.jpg" alt="" style="margin:5px;width:170px;height:148px" />“Sophie definitely deserves the award: for her PhD she has solved multiple challenging problems in the field of electromagnetic structured materials, which has only been possible because of her smart and creative use of theoretical and computational tools. In addition, she has written an exceptionally beautiful thesis. I am very proud of her,” says Sophie Viaene’s supervisor Philippe Tassin, Associate Professor at Department of Physics at Chalmers. </div> <div><br /> </div> <div> “I am very honoured by this award. To be highlighted among the many exciting physics projects at Chalmers by an independent panel of physics professors is something that I am very proud of, &quot; says Sophie Viaene. <span style="background-color:initial"> </span> <br /></div> <h5 class="chalmersElement-H5">What do you think made your thesis so appreciated?</h5> <div>“I think that my thesis was appreciated because it combines ideas from quite a few scientific disciplines. In our field, the main focus is often on the design of a specific type of artificial metamaterials that control light to a high precision by making use of small engineered structures. Our aim was not to develop specific material designs, but to more generally explore what are the physical restrictions on possible applications with metamaterials, hence the title of my thesis “Exploring metamaterial horizons”.</div> <div>A second reason why I think that my thesis stood out is because of how I have visualized and communicated the research in the form of a monograph. I did enjoy the process, because it allowed putting things into context and visualizing the research in a way that is different from the research papers.”</div> <h5 class="chalmersElement-H5">What was the hardest part of the work?</h5> <div>“The coolest and hardest question we were trying to answer is whether metamaterials can behave as artificial black hole analogues. Real black holes are massive objects that deform space and time in an extreme way, for example, time slows down close to the event horizon of a black hole from which nothing can escape, not even light. I really struggled to find how photons behave near this singularity. It took several approximations, some clever analytics, quite a lot of numerics, and a year and a half of dedication, to find out exactly how metamaterials change the notion of space and time.”</div> <h5 class="chalmersElement-H5">… and the best part? </h5> <div>“Professor Uri Alon has a TED talk that nicely captures what I think is the best part of doing a PhD. He explains that doing science is similar to making a journey, starting from a known point A and planning to go to point B. Instead, one ends up getting stuck in a “cloud” of challenges, uncertainties, and maybe even inconsistencies, before emerging from this cloud to point C that is quite different from B. The last year of the thesis was the best part, when finishing up and realizing how things have worked out.”</div> <h5 class="chalmersElement-H5">What piece of advice could you give to future doctoral students?</h5> <div>“Two things have been crucial for me: Interacting with my supervisors and colleagues (try to find a group with nice atmosphere and a sense of sharing) and having chosen a scientific discipline that matches with my research preferences, in my case a young scientific discipline with plenty of opportunities for new methods and ideas. So, my main advice is: choose wisely!<span style="background-color:initial"> &quot;</span></div> <h5 class="chalmersElement-H5">What are you up to now?</h5> <div>“I am a postdoctoral researcher at Imperial College (the Ortwin Hess group), focussing on the design of small nanolasers without a cavity.”</div> <div><br /> </div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read Sophie Viaene’s thesis.</a></div> <div> <br /> </div> <h5 class="chalmersElement-H5">Ferry Nugroho:</h5> <h2 class="chalmersElement-H2"><span>“I </span><span>wanted my thesis to be approachable by all readers”​</span><span>​</span></h2> <h2 class="chalmersElement-H2"><img src="/SiteCollectionImages/Institutioner/F/710X340/710x340_Ferry%20Nugroho.jpg" alt="" style="margin:5px" /><br />​​​​</h2> <div><span style="background-color:initial">&quot;</span><span style="background-color:initial">Imagine driving a car for hours, travelling along the beautiful coasts of Sweden, and what is coming out of the exhaust pipe are not toxic and polluting gases but only water&quot;. That is how <a href="/en/departments/physics/calendar/Pages/Disputation_Ferry_Nugroho_180523.aspx">the abstract ​</a>of ​</span><span style="background-color:initial">Ferry Nugroho's thesis starts. He </span><span style="background-color:initial">has </span><span style="background-color:initial">dev</span><span style="background-color:initial">eloped a hydrogen detection platform that uses light and alloy nanoparticles to create fast, sensitive, and stable hydrogen sensors. Such sensors are essential to </span><span style="background-color:initial">ensure that future hydrogen vehicles are safe enough.</span><br /> </div> <div>Ferry Nugroho defended his doctoral thesis at the Department of Physics at Chalmers in May 2018. The title of his thesis was <em>Nanoplasmonic Alloy Hydrogen Sensors A Quest for Fast, Sensitive and Poisoning-Resistant Hydrogen Detection</em>. </div> <div><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/F/350x305/ChristophLanghammerfarg350x305.jpg" alt="" style="margin:5px;width:170px;height:148px" /></div> <div><br /> </div> <div>”Ferry’s work is not only very comprehensive and diverse, it also constitutes a true breakthrough in hydrogen sensor technology, which was achieved through his efforts to first understand the limiting factors at the fundamental level, and then systematically mitigate them,&quot; says his supervisor Christoph Langhammer, Associate Professor at the Department of Physics.</div> <div>  <br /></div> <div>“I am very surprised and honoured. It is great that the thesis is appreciated, and I hope it is useful for both scientific and education reasons,” says Ferry Nugroho. </div> <h5 class="chalmersElement-H5">What do you think made your thesis so appreciated?</h5> <div>“I was aware before writing that I'd like to write a thesis that is approachable by all readers, skilled or not. So, I avoided too deep discussions on the physics and whatnot and tried to instead write a flowing chapter that hopefully captures the interest of the reader.”</div> <h5 class="chalmersElement-H5">What was the hardest part of the work?</h5> <div>“As experimentalist, sometimes things are not behaving the way you expect. This is not fun, especially when time comes into consideration.”</div> <h5 class="chalmersElement-H5">… and the best part?</h5> <div>“The best part, of course, is when the work is appreciated – like being published in a journal, being referred to in other publications, or in general when people benefit from it.”</div> <h5 class="chalmersElement-H5">What piece of advice could you give to future doctoral students?</h5> <div>“Enjoy the doctoral process. It may be difficult, but at the end it is very rewarding. Absorb as many skills as you can, including writing an appealing piece of text.”</div> <h5 class="chalmersElement-H5">What are you up to now?</h5> <div>“I continue with my research in the same group.&quot;​<br /></div> <div><br /> </div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read Ferry Nugroho’s doctoral thesis. </a></div> <div>  <br /></div> <div><h2 class="chalmersElement-H2"><span>The Best Thesis Award at the Department of Physics  </span></h2></div> <div>The prize was founded in 2013 and is awarded annually to one or several doctoral students who have defended their thesis during that year. The awarded theses can serve as good examples for doctoral students in the early stages of their own thesis writing.</div> <div>Besides the honor, the winner also gets a diploma and a monetary prize of SEK 10.000. The prize committee consists of researchers from every division within the department. </div> <div>The members of this year’s committee were Riccardo Catena, Paolo Vinai, Paul Erhart, Arkady Gonoskov, Marianne Liebi, Björn Agnarsson, Magnus Hörnqvist Colliander, Ermin Malic, Igor Zoric, and Timur Shegai. </div> <div><br /> </div> <h2 class="chalmersElement-H2">The prize committee about the awarded theses 2018:</h2> <div>“This year the committee has decided to share the prize between <strong>Sophie Viaene</strong> and <strong>F</strong><strong>erry Nugroho</strong>. They both did a great job and their theses are somewhat complementary - one theory, one experiment. However, both are related to light interacting with subwavelength objects, for photonics and material science applications, respectively. Sophie's thesis is exceptionally well written, there is a coherent flow of information throughout the whole work. Moreover, the thesis is very detailed, but at the same time very pedagogical, such that a person outside of the metamaterial field could follow and understand both basic and advanced concepts. Ferry's thesis has a fantastic introduction and motivation part. Also, here there was a great pedagogical and coherence aspect. Ferry is a great writer! Moreover, Ferry's work has generated a considerable cumulative impact due to the substantial amount of high-profile peer-reviewed publications on which the thesis is based (and also the work that was not included).  Altogether, this made us to choose Sophie and Ferry for the best PhD thesis award this time. The prize committee sincerely congratulates Sophie and her supervisor Philippe Tassin, as well as Ferry and his supervisor Christoph Langhammer with this achievement and wishes them success in the future.”</div> <div> </div> <div><a href="/insidan/sites/ap/forskarutbildning/best-thesis-award"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /> See the list of previous winners, check out their theses and see detailed criteria for the award.​</a></div> <div><br /> </div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a></div> <div>Photo of Ferry Nugroho: Helén Rosenfeldt</div> <div>Photo of Sophie Viaene (at top): Mia Halleröd Palmgren</div> ​​​Wed, 13 Feb 2019 00:00:00 +0100–-and-better-beer.aspx cell stress for better health – and better beer<p><b>​Human beings are not the only ones who suffer from stress – even microorganisms can be affected. Now, researchers from Chalmers University of Technology, Sweden, have devised a new method to study how single biological cells react to stressful situations. Understanding these responses could help develop more effective drugs for serious diseases. As well as that, the research could even help to brew better beer. ​​</b></p><div><span style="background-color:initial">All living organisms can experience stress during challenging situations. Cells and microorganisms have complicated systems to govern how they adapt to new conditions. They can alter their own structure by incorporating or releasing many different substances into the surroundings. Due to the complexity of these molecular processes, understanding these systems is a difficult task. </span><br /></div> <div><span style="background-color:initial"><br /></span> </div> <div>Chalmers researchers Daniel Midtvedt, Erik Olsén, Fredrik Höök and Gavin Jeffries have now made an important breakthrough, by looking at how individual yeast cells react to changes in the local environment – in this case an increased osmolarity, or concentration, of salt. They both identified and monitored the change of compounds within the yeast cells, one of which was a sugar, glycerol. Furthermore, they were able to measure the exact rate and amount of glycerol produced by different cells under various stress conditions. Their results have now been published in the renowned scientific journal Nature Communications. </div> <div><br /> </div> <div><span style="background-color:initial">With the help of holographic microscopy, researchers have studied biological microorganisms in three dimensions to be able to see how they react to changes in their surroundings. The cells’ reactions to stress is measured through a method in which a laser beam is first split into two light paths. One of the light paths passes through a cell sample, and one does not. The two beams are then recombined at a slight offset angle. It is then possible to read changes in the cell’s properties through the variations in the beams’ phase offsets. Understanding these responses could help develop more effective drugs for serious diseases. Additionally, the research could even help to brew better beer. </span></div> <div><span style="background-color:initial"><br /></span> </div> <span></span><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/DanielMidtvedt_20190125-01_webb.jpg" alt="" style="margin:5px;font-family:helvetica, arial, sans-serif;font-size:medium" /><span style="font-family:helvetica, arial, sans-serif;font-size:medium"></span><div>​&quot;Yeast and bacteria have very similar systems when it comes to response to stress, meaning the results are very interesting from a medical point of view. This could help us understand how to make life harder for undesirable bacteria which invade our body – a means to knock out their defence mechanisms,” says Daniel Midtvedt, researcher in biological physics at Chalmers, and lead writer of the scientific paper. </div> <div><br /> </div> <div>He has been researching the subject since 2015, and, together with his colleagues, has developed a variant of holographic microscopy to study the cells in three dimensions. The method is built upon an interference imaging approach, splitting a laser beam into two light paths, with one which passes through a cell sample, and one which does not. The two beams are then recombined at a slight offset angle. This makes it possible to read changes in the cell’s properties through the variations in beam phase offsets.</div> <div><br /> </div> <div>With this method of investigating a cell, researchers can see what different microorganisms produce under stress – without needing to use different types of traditional ‘label-based’ strategies. Their non-invasive strategy allows for multiple compounds to be detected simultaneously, without damaging the cell.</div> <div>The researchers now plan to use the new method in a large collaboration project, to look at the uptake of targeted biomedicines. </div> <div><br /> </div> <img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/FredrikHook_20190201_01_webb.jpg" alt="" style="margin:5px;font-family:helvetica, arial, sans-serif;font-size:medium" /><span style="font-family:helvetica, arial, sans-serif;font-size:medium"></span><div>​“Hopefully, we can contribute to improved understanding of how drugs are received and processed by human cells. It is important to be able to develop new type of drugs, with the hope that we can treat those illnesses which today are untreatable,” says Chalmers professor Fredrik Höök, who further leads the research centre Formulaex, where AstraZeneca is the leading industry partner. </div> <div><br /> </div> <div>As well as the benefit to medical researchers, improved knowledge of the impact of stress on yeast cells could be valuable for the food and drink industry – not least, when it comes to brewing better beer.</div> <div>“Yeast is essential for both food and drink preparation, for example in baking bread and brewing beer. This knowledge of yeast cells’ physical characteristics could be invaluable. We could optimise the products exactly as we want them,” says Daniel Midtvedt. </div> <div><br /> </div> <p class="chalmersElement-P">Text: <span>Joshua Worth,<a href=""></a>​ and Mia Halleröd Palmgren, <a href=""></a></span></p> <p class="chalmersElement-P"><span>Images: Mia Halleröd Palmgren</span></p> <p class="chalmersElement-P"><span><br /></span> </p> <span></span><h3 class="chalmersElement-H3" style="font-family:&quot;open sans&quot;, sans-serif">The new method to analyse cells’ reactions to stress:</h3> <span></span><h3 class="chalmersElement-H3" style="font-family:&quot;open sans&quot;, sans-serif"></h3> <p class="chalmersElement-P"><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/holografisktmikroskop_20190125-04._webb.jpg" alt="" style="margin:5px" /> With the help of holographic microscopy, researchers have studied biological microorganisms in three dimensions to be able to see how they react to changes in their surroundings. The cells’ reactions to stress is measured through a method in which a laser beam is first split into two light paths. One of the light paths passes through a cell sample, and one does not. The two beams are then recombined at a slight offset angle. It is then possible to read changes in the cell’s properties through the variations in the beams’ phase offsets. </p> <div>Understanding these responses could help develop more effective drugs for serious diseases. Additionally, the research could even help to brew better beer. </div> <div><br /> </div> <h3 class="chalmersElement-H3">About the scientific paper:</h3> <img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/ErikOlsén_DanielMidtvedt_GavinJeffies_20190204_02_webb_liten.jpg" alt="" style="margin:5px" /><div>The article, <a href="">“Label-free spatio-temporal monitoring of cytosolic mass, osmolarity, and volume in living cells” ​</a>is published in Nature Communications. It was written by Chalmers researchers Daniel Midtvedt, Erik Olsén and Fredrik Höök from Chalmers’ Department of Physics, and Gavin Jeffries (Fluicell AB), previously at the Department of Chemistry and Chemical Engineering. </div> <div><span><span style="background-color:initial"><span style="display:inline-block"></span></span></span><br /> </div> <h3 class="chalmersElement-H3">For more information, contact: </h3> <div><strong><a href="/en/Staff/Pages/Daniel-Midtvedt.aspx">Daniel Midtvedt</a></strong>, Post Doc, Biological Physics, Department of Physics</div> <div>+46 ​73 736 85 05, <span></span><span style="background-color:initial"><a href=""></a></span></div> <div><br /> </div> <div><strong><a href="/en/staff/Pages/Fredrik-Höök.aspx">Fredrik Höök</a></strong>, Professor/Head of Division, Biological Physics, Department of Physics </div> <div>+46 31 772 61 30, <span style="background-color:initial"><a href="">​</a></span></div> <div><span style="background-color:initial"><br /></span> </div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/DanielMidtedt_20190125_03_webb_750x.jpg" alt="" style="margin:5px;background-color:initial" /><span style="background-color:initial">With the help of h</span><span style="background-color:initial">olographic microscopy, the researcher Daniel Midtvedt studies biological microorganisms in three dimensions to be able to se</span><span style="background-color:initial">e how they react to changes in their surroundings.</span><span style="background-color:initial"> </span></div> <div><br /> </div> <h4 class="chalmersElement-H4">Related material: </h4> <div><a href="/en/departments/physics/news/Pages/75-MSEK-for-developing-target-seeking-biological-pharmaceuticals.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read the press release “75 million SEK for developing target seeking biological pharmaceuticals”.</a></div> <div><a href="/en/centres/FoRmulaEx/about/Pages/default.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more on Formulaex.​</a><br /></div>Tue, 12 Feb 2019 07:00:00 +0100 for nominations: Gothenburg Lise Meitner award 2019<p><b>​The Gothenburg Physics Centre (GPC) is seeking nominations for the 2019 Gothenburg Lise Meitner Award.  Nominations are due on Monday, 4 March, 2019.</b></p>​​The Lise Meitner award honors exceptional individuals for a “<em>groundbreaking discovery in physics</em>”.  <br />In addition to their scientific accomplishments, the candidates must meet the following selection criteria:<br /><ul><li>They have distinguished themselves through public activities of popularizing science and are prepared to deliver the annual Lise Meitner Lecture (middle of September).</li> <li>Their research activity is connected to or benefit activities at GPC.<br /></li></ul> Nominations should include a motivation describing the achievements of the candidate, a short biography/CV, contact details and a local contact person. <br /><br />We would also like to thank those of you who did make an effort to nominate a candidate in the past! In case your nomination has not been chosen, we encourage you to submit her or his name again. As the number of nominations has declined in recent years, we <span style="font-weight:700">strongly </span>encourage all members of GPC to nominate a candidate! Please think broadly! There are certainly outstanding candidates you either know personally or whom you would like to come here to Gothenburg.  ​<br /><br />Nominations should be sent to any member of the of the Lise Meitner Award Committee 2019: <br /><br />Dinko Chakarov <a href=""></a> <br />Hans Nordman <a href=""></a><br />Ann-Marie Pendrill <a href=""></a><br />Vitaly Shumeiko <a href="">​</a><br />Andreas Heinz (Chair) <a href=""></a><br /><a href=""></a><br /><a href="/en/centres/gpc/activities/lisemeitner"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />More information about Lise Meitner and the award can be found at the GPC website</a><br /><br />With best regards,<br /><br />The 2019 Lise Meitner Committee​Fri, 01 Feb 2019 00:00:00 +0100 elected member of the Royal Swedish Academy of Sciences<p><b>​​Tünde Fülöp, Professor of Physics at Chalmers University of Technology, is a new member of the Royal Swedish Academy of Sciences. She is one of four new members of the Academy’s Class for Physics and the only one from Chalmers to be selected.</b></p>​<img src="/SiteCollectionImages/Institutioner/F/350x305/Tunde350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /><span style="background-color:initial">“I feel deeply honoured and I am looking forward to contributing to the important task of the Academy – to promote science and strengthen its role and influence in our society. It will also be interesting to exchange experiences and ideas with the other members,” says Tünde Fülöp, a Professor at the Department of Physics at Chalmers.</span><div><br /><span style="background-color:initial"></span><div>Tünde Fülöp is a theoretical plasma physicist and her research focus is magnetic fusion and laser-plasma accelerators. Plasma physics is a subfield of physics which brings together electromagnetics, fluid dynamics, wave-particle interaction, relativistic effects and subatomic physics. Applications range from cancer therapy and lightning initiation, to fusion devices for large scale energy production. Her research focus is set on plasma stability, impurity transport, runaway particles and radiation. </div> <div><br /></div> <div>In addition to Tünde Fülöp, Stefan Kröll, Lund University, was elected new swedish members of the Academy’s Class for Physics in January 2019. At the same time Richard Brenner, Uppsala University and Klaus Blaum, Max Planck Institute for Nuclear Physics in Heidelberg, Germany, were elected foreign members of the Academy's Class for Physics.</div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a></div> <div>Image: Peter Widing</div> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />More about the new members of the Academy.</a></div> <div><a href="/en/research/our-scientists/Pages/The-Royal-Swedish-Academy-of-Sciences.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Chalmers researchers in the Royal Swedish Academy of Sciences​</a><br /></div> <div><div><a href="/en/Staff/Pages/Tünde-Fülöp.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more about Tünde Fülöp</a><span style="background-color:initial">.</span><br /></div></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />&quot;Opportunities in everything​&quot; - read a personal portrait of Tünde Fülöp.​​</a></div> <h5 class="chalmersElement-H5">Two research breakthroughs for Tünde Fülöp's group at Chalmers:</h5> <div><a href="/en/departments/physics/news/Pages/Flares-in-the-universe-can-now-be-studied-on-earth.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Flares in the universe can now be studied on earth.</a></div> <div><a href="/en/departments/physics/news/Pages/Deceleration-of-runaway-electrons-paves-the-way-for-future-fusion-power.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /><span style="background-color:initial">D</span><span style="background-color:initial">eceleration of runaway electrons paves the way for fusion power</span></a></div></div> <div><div><br /></div></div>Wed, 30 Jan 2019 00:00:00 +0100 were awarded the coveted consolidator grants<p><b></b></p><div><img src="/en/departments/physics/news/PublishingImages/vrkonsilodation.jpg" alt="vrkonsilodation.jpg" class="chalmersPosition-FloatRight" style="margin:5px" />The Swedish Research Council has decided on the applications to be awarded consolidator grants in 2018. The total grant amount for 2019-2024 is almost 221,5 million SEK. </div> <div>The competition has been hard. Of the 306 applications received, 20 have been granted and three of them go to physicists at Chalmers.​<br /></div> <div>Congratulations to <a href="/en/staff/Pages/Christoph-Langhammer.aspx">Christoph Langhammer</a> and <a href="/sv/personal/Sidor/ermin-malic.aspx">Ermin Malic</a> at the Department of Physics and to <a href="/sv/personal/Sidor/Åsa-Haglund.aspx">Åsa Haglund</a> at the Department of Microtechnology and Nanoscience. They were the three researchers at Chalmers who managed to get the coveted grant. </div> <div><br /></div> <div>Christoph Langhammer’s project” The Sub-10 nm Challenge in Single Particle Catalysis” and has been granted 12 million SEK. </div> <div><a href="/en/centres/gpc/news/Pages/Portrait-Christoph-Langhammer.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about Christoph Langhammer and the research that paves the way for the hydrogen vehicles of the future.</a></div> <div><br /></div> <div>Ermin Malics’ project ”Microscopic view on exciton dynamics in atomically thin materials” has been granted 12 million SEK. </div> <div><a href="/en/departments/physics/news/Pages/Optical-fingerprint-can-reveal-environmental-gases.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about Ermin Malic's research on, for example, ultra-thin, fast, efficient and accurate sensors. ​​</a></div> <div><br /></div> <div>Åsa Haglund’s project ”Ultraviolet and blue microcavity lasers” has been granted 10,4 million SEK. </div> <div><a href="/en/departments/mc2/news/Pages/MC2-researcher-gets-major-grant-from-The-Swedish-Research-Council.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about Åsa Haglund and her research on developing the very first electrically driven ultraviolet microcavity laser. </a></div> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the consolidator grant and the projects (Swedish Research Council)​</a></div> Wed, 05 Dec 2018 00:00:00 +0100 came to Sweden and got a book in Japanese...<p><b>​In connection with his talk at Chalmers on 28 November, the Nobel Prize Laureate Takaaki Kajita was given a book in his own language. He got one of the first copies of the Japanese edition of the book “The Discovery of Nuclear Fission – Women Scientists in Highlight”. ​</b></p><div><span style="background-color:initial">The book is about Ida Noddack, Irène Joliot-Curie and Lise Meitner's contributions to science and is written by Professor Imre Pázsit, Chalmers, and Nhu-Tarnawska Hoa Kim-Ngan. </span></div> <div>It was originally written in English, then expanded and translated to Swedish, from which the new translation was prepared by Noriko Johansson Akinaga. </div> <div><br /> </div> <div>The Japanese edition was inspired by the fact that this year Sweden and Japan celebrate 150 years of diplomatic relations. It was financially supported by the Area of Advance Energy and has been printed at Chalmers. </div> <div>​The book release event will take place at the Swedish Embassy in Roppongi, Tokyo on 9 May 2019.</div> <div><br /> </div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a></div> <div><br /> </div> <div><a href="/sv/styrkeomraden/energi/nyheter/Sidor/Ser-till-kvaliten-i-forskningen-trots-Fukushima.aspx"><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/Nobel_Prize_Laureate_will_visit_Chalmers.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about Takaaki Kajita and his research. </a></div>Wed, 05 Dec 2018 00:00:00 +0100 toxic mercury from contaminated water<p><b>Water which has been contaminated with mercury and other toxic heavy metals is a major cause of environmental damage and health problems worldwide. Now, researchers from Chalmers University of Technology, Sweden, present a totally new way to clean contaminated water, through an electrochemical process. The results are published in the scientific journal Nature Communications. ​​​</b></p><div><span style="background-color:initial">“Our results have really exceeded the expectations we had when we started with the technique,” says the research leader Björn Wickman, from Chalmers’ Department of Physics. “Our new method makes it possible to reduce the mercury content in a liquid by more than 99%. This can bring the water well within the margins for safe human consumption.” </span><br /></div> <div><span style="background-color:initial"><br /></span></div> <div>According to the World Health Organisation (WHO), mercury is one the most harmful substances for human health. It can influence the nervous system, the development of the brain, and more. It is particularly harmful for children and can also be transmitted from a mother to a child during pregnancy. Furthermore, mercury spreads very easily through nature, and can enter the food chain. Freshwater fish, for example, often contain high levels of mercury. </div> <div><br /></div> <div>In the last two years, Björn Wickman and Cristian Tunsu, researcher at the Department of Chemistry and Chemical Engineering at Chalmers, have studied an electrochemical process for cleaning mercury from water. Their method works via extracting the heavy metal ions from water by encouraging them to form an alloy with another metal. </div> <div><br /></div> <div>“Today, removing low, yet harmful, levels of mercury from large amounts of water is a major challenge. Industries need better methods to reduce the risk of mercury being released in nature,” says Björn Wickman. </div> <div><br /></div> <img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Vattenrening_labbsetup1_webb.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;background-color:initial" /><div>Their new method involves a metal plate – an electrode – that binds specific heavy metals to it. The electrode is made of the noble metal platinum, and through an electrochemical process it draws the toxic mercury out of the water to form an alloy of the two. In this way, the water is cleaned of the mercury contamination. The alloy formed by the two metals is very stable, so there is no risk of the mercury re-entering the water. </div> <div><br /></div> <div>“An alloy of this type has been made before, but with a totally different purpose in mind. This is the first time the technique with electrochemical alloying has been used for decontamination purposes,” says Cristian Tunsu.</div> <div><br /></div> <div>One strength of the new cleaning technique is that the electrode has a very high capacity. Each platinum atom can bond with four mercury atoms. Furthermore, the mercury atoms do not only bond on the surface, but also penetrate deeper into the material, creating thick layers. This means the electrode can be used for a long time. After use, it can be emptied in a controlled way. Thereby, the electrode can be recycled, and the mercury disposed of in a safe way. A further positive for this process is that it is very energy efficient.</div> <div><br /></div> <div>“Another great thing with our technique is that it is very selective. Even though there may be many different types of substance in the water, it just removes the mercury. Therefore, the electrode doesn’t waste capacity by unnecessarily taking away harmless substances from the water,” says Björn Wickman. </div> <div><br /></div> <div>Patenting for the new method is being sought, and in order to commercialise the discovery, the company Atium has been setup. The new innovation has already been bestowed with a number of prizes and awards, both in Sweden and internationally. The research and the colleagues in the company have also had a strong response from industry. ​ </div> <div><br /></div> <div>“We have already had positive interactions with a number of interested parties, who are keen to test the method. Right now, we are working on a prototype which can be tested outside the lab under real-world conditions.”</div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a> </div> <div>and Joshua Worth, <a href=""> ​</a><br /></div> <div><br /></div> <div>Read the article, <a href="">“Effective removal of mercury from aqueous streams via electrochemical alloy formation on platinum”​</a> in Nature Communications.</div> <div><br /></div> <div><div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release and download high-resolution images. ​​</a><span style="background-color:initial">​</span></div></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Vattenrening_Bjorn_Wickman_Cristian_Tunsu_portratt_750x340_NY.jpg" alt="" style="margin:5px" />​<span style="background-color:initial">Björn Wickman and Cristian Tunsu</span><span style="background-color:initial"> ​are pr</span><span style="background-color:initial">esenting a new and effective way of cleaning mercury from water. With the help of new technology, contaminated water can become clean enough to be well within the safe limits for drinkability. The results are now published in the scientific journal Nature Communications. ​</span></div> <div><span style="background-color:initial">Image: Mia Halleröd Palmgren</span></div> <div><br /></div> <div><h3 class="chalmersElement-H3">Potential uses for the new method</h3> <div><ul><li>T<span style="background-color:initial">he technique could be used to reduce the amount of waste and increase the purity of waste and process water in the chemical and mining industries, and in metal production. </span></li></ul></div> <div><ul><li>It can contribute to better environmental cleaning of places with contaminated land and water sources.<br /></li></ul></div> <div><ul><li>​It <span style="background-color:initial">can even be used to clean drinking water in badly affected environments because, thanks to its low energy use, it can be powered totally by solar cells. Therefore, it can be developed into a mobile and reusable water cleaning technology. </span></li></ul></div> <h3 class="chalmersElement-H3">More on heavy metals in our environment</h3> <div>Heavy metals in water sources create enormous environmental problems and influence the health of millions of people around the world. Heavy metals are toxic for all living organisms in the food chain. According to the WHO, mercury is one of the most dangerous substances for human health, influencing our nervous system, brain development and more. The substance is especially dangerous for children and unborn babies. </div> <div>Today there are strict regulations concerning the management of toxic heavy metals to hinder their spread in nature. But there are many places worldwide which are already contaminated, and they can be transported in rain or in the air. This results in certain environments where heavy metals can become abundant, for example fish in freshwater sources. In industries where heavy metals are used, there is a need for better methods of recycling, cleaning and decontamination of the affected water. <span style="background-color:initial">​</span></div></div> <div><h3 class="chalmersElement-H3" style="font-family:&quot;open sans&quot;, sans-serif">For more information</h3> <div><span style="font-weight:700"><a href="/en/Staff/Pages/Björn-Wickman.aspx">Björn Wickman​</a></span>, Assistant Professor, Department of Physics, Chalmers University of Technology, +46 31 772 51 79, <a href="">​</a></div> <div><span style="font-weight:700"><a href="/en/staff/Pages/tunsu.aspx">Cristian Tunsu</a></span>,  Post Doc, Department of Chemistry and Chemical Engineering​, <span style="background-color:initial">Chalmers University of Technology, +46 </span><span style="background-color:initial">31 772 29 45, <a href=""></a></span></div></div> <div><div><div><span style="background-color:initial"></span></div></div></div>Wed, 21 Nov 2018 07:00:00 +0100 to melt gold at room temperature<p><b>​When the tension rises, unexpected things can happen – not least when it comes to gold atoms. Researchers from, among others, Chalmers University of Technology, have now managed, for the first time, to make the surface of a gold object melt at room temperature.​</b></p><div><div><div>​<span style="background-color:initial">Ludvig de Knoop, from Chalmers’ Department of Physics, placed a small piece of gold in an electron microscope. Observing it at the highest level of magnification and increasing the electric field step-by-step to extremely high levels, he was interested to see how it influenced the gold atoms.</span></div> <div>It was when he studied the atoms in the recordings from the microscope, that he saw something exciting. The surface layers of gold had actually melted – at room temperature.</div> <div><br /></div> <div>&quot;I was really stunned by the discovery. This is an extraordinary phenomenon, and it gives us new, foundational knowledge of gold,” says Ludvig de Knoop.</div> <div><br /></div> <div>What happened was that the gold atoms became excited. Under the influence of the electric field, they suddenly lost their ordered structure and released almost all their connections to each other.</div> <div>Upon further experimentation, the researchers discovered that it was also possible to switch between a solid and a molten structure.</div> <div><br /></div> <div>The discovery of how gold atoms can lose their structure in this way is not just spectacular, but also groundbreaking scientifically. Together with the theoretician Mikael Juhani Kuisma, from the University of Jyväskylä in Finland, Ludvig de Knoop and colleagues have opened up new avenues in materials science. The results are now published in the journal Physical Review Materials. </div> <div><br /></div> <div>Thanks to theoretical calculations, the researchers are able to suggest why gold can melt at room temperature, which has to do with the formation of defects in the surface layers. <br /><br />Possibly, the surface melting can also be seen as a so-called low-dimensional phase transition. In that case, the discovery is connected to the research field of topology, where pioneers David Thouless, Duncan Haldane and Michael Kosterlitz received the Nobel Prize in Physics 2016. With Mikael Juhani Kuisma in the lead, the researchers are now looking into that possibility. In any case, the ability to melt surface layers of gold in this manner enables various novel practical applications in the future.<br /><span style="background-color:initial"></span></div> <div><br /></div> <div>&quot;Because we can control and change the properties of the surface atom layers, it opens doors for different kinds of applications. For example, the technology could be used in different types of sensors, catalysts and transistors. There could also be opportunities for new concepts for contactless components,&quot; says Eva Olsson, Professor at the Department of Physics at Chalmers.</div> <div><br /></div> <div>But for now, for those who want to melt gold without an electron microscope, a trip to the goldsmith is still in order.</div></div> <div><br /></div> <div><span style="background-color:initial">Text: </span><span style="background-color:initial"> Joshua Worth,</span><a href="">  </a>and <span style="background-color:initial">M</span><span style="background-color:initial">ia </span><span style="background-color:initial">Hall</span><span style="background-color:initial">eröd</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"></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"></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"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"> Palmgren, </span><span style="background-color:initial"><a href=""> </a></span><span style="background-color:initial"> </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="color:rgb(33, 33, 33);font-family:&quot;open sans&quot;, sans-serif;font-size:24px;background-color:initial">About the scientific article</span><br /></div> <div><div><span style="background-color:initial">The article </span><a href="">“Electric-field-controlled reversible order-disorder switching of a metal tip surface </a><span style="background-color:initial">” has been published in the journal Physical Review Materials. It was written by Ludvig de Knoop, Mikael Juhani Kuisma, Joakim Löfgren, Kristof Lodewijks, Mattias Thuvander, Paul Erhart, Alexandre Dmitriev and Eva Olsson. The researchers behind the results are active at Chalmers, the University of Gothenburg,  the University of Jyväskylä in Finland, and Stanford University in the United States.</span></div> <span style="background-color:initial"></span></div> <div><br /></div></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/GuldSmalterIRumstemperatur_181116_01_750x340px.jpg" alt="" style="font-size:24px;margin:5px" /><span style="background-color:initial"> </span><span style="background-color:initial">Joakim Löfgren, Eva Olsson, Ludvig de Knoop,  Mattias Thuvander, Alexandre Dmitriev and Paul Erhart are some of the researchers behind the discovery. Not pictured are Mikael Juhani Kuisma and Kristof Lodewijks.</span><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial">Image: Johan Bodell</span></div> <div><h3 class="chalmersElement-H3">More about the research infrastructure at Chalmers<br /></h3> <div> </div> <div><a href="/en/researchinfrastructure/CMAL/Pages/default.aspx">The Chalmers Material Analysis Laboratory (CMAL) </a> 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 - in this case, transmission electron microscopes (TEM). Major investments have recently been made, to further push the laboratory to the forefront of material research. In total, the investments are about 66 million Swedish kronor, of which the Knut and Alice Wallenberg Foundation has contributed half.<span style="background-color:initial"> </span></div> <div> </div> <h4 class="chalmersElement-H4">More about electron microscopy</h4> <div> </div> <div>Electron microscopy is a collective name for different types of microscopy, using electrons instead of electromagnetic radiation to produce images of very small objects. Using this technique makes it possible to study individual atoms. <span style="background-color:initial"> </span></div> <div><div><h3 class="chalmersElement-H3">For more information, contact: </h3></div> <div><div><a href="/en/staff/Pages/f00lude.aspx"><span>Ludvig de Knoop</span>, </a>Postdoctoral researcher, Department of Physics, Chalmers University of Technology, Sweden, +46 31 772 <span style="background-color:initial">51 80, </span><a href="" style="font-family:calibri, sans-serif;font-size:12pt"><span lang="EN-US"> </span></a></div></div> <div><span style="background-color:initial"> <br /></span></div> <div><a href="/en/Staff/Pages/Eva-Olsson.aspx"><span>Eva Olsson</span><span style="background-color:initial">,</span></a><span style="background-color:initial"> Professor, Department of Physics, Chalmers University of Technology, Sweden, +46 31 772 32 47, </span><a href="" target="_blank"> </a><br /></div> <div><br /></div> <div><a href=""><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><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Watch a <span style="background-color:initial">short video clip with researcher Ludvig de Knoop explaining the discovery.</span>​</a></div> </div></div> ​Tue, 20 Nov 2018 07:00:00 +0100 will facilitate and increase the use of research infrastructures<p><b>The Swedish Research Council has decided on approved applications within Grant for accessibility to infrastructure. We congratulate our researchers who have been successful in this call.</b></p><div><span style="background-color:initial">In total, The Swedish Research Council received 35 applications, of which 9 have been granted and in total, we have granted SEK 76 million.</span></div> <div>The grant are allocated to organisations within the public sector and the industry that facilitate and increase the use of research infrastructures SciLifeLab, Max IV and ESS. </div> <div>The grant will also promote Swedish participation in the development and upgrading of research infrastructures of great strategic value for Swedish researchers and Swedish business.</div> <div><br /></div> <h4 class="chalmersElement-H4">Granted projects at Chalmers 2018 till 2022</h4> <strong>Aleksandar Matic</strong> has been granted 12 MSEK with his co-applicants Marianne Liebi, Condensed Matter Physics, Daniel Söderberg, KTH, Stephen Hall, Lund University, Tomas Larsson, RISE and Stephan Roth, Petra III (a research facility in Hamburg). <span> <span>The project title is &quot;FORMAX-portalen - access till avancerade röntgenmetoder för skogsindustrin&quot;. <span style="display:inline-block"></span></span></span> The funds will be used to reduce the industry threshold to use advanced X-ray techniques at MAX IV and is linked to Treesearch, which is a major venture between Swedish universities and the forest industry.<span><span style="display:inline-block"></span></span> <div><br /><strong>Paul Erhart</strong> has obtained a 8 MSEK grant. Co-applicants are Magnus Hörnqvist Colliander, Materials Microstructure, Magnus Ekh, Department of Industrial and Materials Science, and Thomas Holm Rod, ESS, and their aim is to develop advanced tools for analysis of neutron diffraction data and make the tools publicly available.</div> <div><span>The project title is &quot;Analys och modelleringstjänst för tekniska material studerad med neutroner&quot;.<span style="display:inline-block"></span></span><br /><br /></div> <div>Furthermore, <strong>Eva Olsson</strong> and<strong> Niklas Lorén</strong> (RISE) from Eva Olsson Group were awarded in the same call. They will take part in a collaboration with MAX IV, with Linda Sandblad from Umeå University as principal investigator. The other collaboration partners are Karolinska Institutet, MAX IV and Lund University. The project title is “NanoSPAM: National Nodes for Sample Preparation And Microscopy” and the total grant amount is 8 MSEK . The purpose is to reach out to both public and industrial research communities within life sciences and soft materials to facilitate their scientific success at MAX IV and SciLifeLab. This will be achieved by forming a collaborative network of labs providing sample preparation, electron (EM) microscopy facilities, and beamline access at MAX IV.<br /></div> <div><br /></div> <a href=""><span><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /></span><div style="display:inline !important">Read more on the homepage of <span style="background-color:initial"> </span><span style="background-color:initial"></span><span style="background-color:initial">The Swedish Research Council. </span></div> </a><br />Tue, 13 Nov 2018 00:00:00 +0100​Go underground with the Nobel Prize Laureate Takaaki Kajita<p><b>​On 28 November the Nobel Prize Laureate Takaaki Kajita will visit Chalmers for a talk. He will tell the story about the fascinating journey which led to a groundbreaking underground discovery - and to the Nobel Prize in Physics 2015. ​</b></p><div><span style="background-color:initial"><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/350x305/1_Takaaki_Kajita_350x305.jpg" alt="" style="margin:5px;width:320px;height:281px" />What he and Arthur B. McDonald had discovered was oscillations of elusive particles called neutrinos. In the Japanese underground observatory Kamiokande the research group led by Kajita could register the oscillations which showed that the particles, assumed to be massless, actually have mass. The discovery has had profound implications on for example stellar structure and cosmology. <br /></span><br /></div> <div>“Neutrinos are extremely fascinating particles, the second most common (after photons) in the Universe but so elusive that we have a hard time noticing their presence. They are potentially the key to understand some of the deepest questions that still remain unsolved,” says Professor Thomas Nilsson, experimental physicist and Head of the Department of Physics at Chalmers. <br /><br /></div> <div>Neutrinos were created at the birth of the Universe. Today they are created in nuclear processes – in the Cosmos, in our laboratories and in nuclear reactors.<br /><br /></div> <div>“When I joined Kamiokande, underground experiments were just a very small sub-field of particle physics experiments. At present, after more than 30 years, these underground experiments have become some of the most promising, powerful, versatile, and efficient ways to explore both particle physics and the Universe itself. This research underground continues to stimulate my interest. I look forward to what new discoveries the future will hold,” writes Professor Takaaki Kajita in The Nobel Prizes 2015, published on behalf of The Nobel Foundation. <br /><br /></div> <div>At Chalmers, many researchers are looking forward to Professor Kajita’s visit, especially physicists within astro, particle and subatomic physics. <br /><br /></div> <div> “I’m very glad for this event for several reasons. I studied particle physics as a student, but ended up as a reactor physicist, which is a completely different area. Nevertheless, both the existence of neutrinos, as well as two out of the three possible neutrino oscillations were proven by using neutrinos from nuclear reactors,” says Professor Imre Pázsit at the Department of Physics at Chalmers.<br /><br /></div> <div>Due to this fact, and to his extensive collaboration with Japanese physicists, Pázsit got into contact with the neutrino research quite some time ago. He met Professor Kajita in Stockholm in connection to the Nobel ceremony and at the Nobel Dialogue Dinner in Tokyo last year they met again.  <br /><br /></div> <div>“There I understood his interest to visit Sweden again, which of course helped to invite him to Chalmers. I look forward to his lecture and I hope that many will take the opportunity to listen to a fascinating talk,” says Professor Pázsit.</div> <div>Imre Pázsit has collaborated with Japanese researchers for more than 25 years. In 2016 he was awarded the Order of the Rising Sun for his &quot;Contribution to the promotion of scientific and technological exchanges and mutual understanding between Japan and Sweden&quot;.<br /><br /></div> <div>Text: Mia Halleröd Palmgren, <a href=""></a></div> <div>Image credit: Bengt Nyman, Wikimedia commons</div> <div><br />The lecture by Professor Takaaki Kajita will be open to the public, free of charge and held in Gustaf Dalén lecture hall at Chalmers campus Johanneberg, Gothenburg on 28 November at 15.15-16.00.<br /></div> <div>No registration is needed. <br /></div> <div><a href="" style="outline:currentcolor none 0px"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /></a> <a href="/en/departments/physics/calendar/Pages/General-Physics-Colloquium_181129.aspx">Read more about the event and add it to your calendar</a><br /></div> <div> </div> <h4 class="chalmersElement-H4">The Nobel Prize in Physics for 2015: Metamorphosis in the particle world</h4> <div>The Nobel Prize in Physics 2015 recognises <strong>Takaaki Kajita</strong> in Japan and <strong>Arthur B. McDonald</strong> in Canada, for their key contributions to the experiments which demonstrated that neutrinos change identities. This metamorphosis requires that neutrinos have mass. The discovery has changed our understanding of the innermost workings of matter and can prove crucial to our view of the universe.<br /><br /></div> <div><strong>Takaaki Kajita</strong>, Super-Kamiokande Collaboration, University of Tokyo, Kashiwa, Japan and <strong>Arthur B. McDonald,</strong> Sudbury Neutrino Observatory Collaboration, Queen’s University, Kingston, Canada, were awarded <em>“for the discovery of neutrino oscillations, which shows that neutrinos have mass”<br /><br /></em></div> <div><a href="" style="outline:currentcolor none 0px"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />​</a> <a href="">Read more about the Nobel Prize in Physics 2015</a></div>Tue, 13 Nov 2018 00:00:00 +0100,-art-and-unexpected-seminars.aspx,-art-and-unexpected-seminars.aspxPlaying physicists, art, creativity and unexpected seminars<p><b>​On 19-21 November it&#39;s time for the AHA Festival at Chalmers - an annual celebration of science and art. This year, several of the program items have a wonderful taste of physics thanks to our researchers.</b></p><h4 class="chalmersElement-H4" style="font-family:&quot;open sans&quot;, sans-serif"><img src="/sv/nyheter/PublishingImages/AHA-logga2018_270x170.jpg" alt="AHA-logga2017_270x170.jpg" class="chalmersPosition-FloatRight" style="margin:5px" /></h4> <div><span style="background-color:initial">​Take the chance to experience the new location of FysikLek (Kemigården 1, 4th floor) and check out an interactive and mind-twisting exhibition with optical illusions. Meet P-O Nilsson and Anders Nordlund and learn about creativity and playing physicists. </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial">You also have the chance to listen to seminar talks at the Student Union Building where, among others, Fredrik Höök, Göran Johansson, Mattias Marklund and Martin Cederwall will be our guides. They will cover a wide range of topics from cave art to smartphones, discuss the language of physics, photosynthesis, evolution, quantum biology and quantum computers. </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial">There will also be a guided tour for those of you who are curious about the fine collection of art in the Physics building. </span><br /></div> <div><span style="background-color:initial"><br /></span></div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a></div> <div><span style="background-color:initial"><br /></span></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Check out the full programme. </a></div> <div><br /></div> <div><strong>AHA Festival, 19-21 November</strong> at FysikLek, GD, “the Apple” (Kemigården 1) and the Student Union Building, second floor, Campus Johanneberg, (Chalmersplatsen 1 ) Gothenburg. </div> <div><span style="background-color:initial">The festival will be free of charge and open to the public.</span><span style="background-color:initial"> </span><br /></div> <div><span style="background-color:initial"><br /></span></div> <div> <div><a href="/sv/nyheter/Sidor/aha-festivalen-2018.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the AHA Festival 2018.</a><br /></div></div> <div><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" style="font-family:&quot;open sans&quot;, sans-serif;border-style:none;font-weight:600" /><a href="/sv/institutioner/ace/kalendarium/Sidor/Aha-festival-2018.aspx">Add the event to your calendar</a><span style="background-color:initial">.</span><br /></div> <div><div><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" style="border-style:none;font-family:&quot;open sans&quot;, sans-serif;font-weight:600" /><a href="">Follow the AHA Festival on Facebook</a>.<br class="Apple-interchange-newline" /><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" style="border-style:none;font-family:&quot;open sans&quot;, sans-serif;font-weight:600" /><a href="">Attend the event for the festival on Facebook</a>.​</div></div>Fri, 09 Nov 2018 00:00:00 +0100