News: Mikroteknologi och nanovetenskaphttp://www.chalmers.se/sv/nyheterNews related to Chalmers University of TechnologyMon, 17 Sep 2018 12:52:45 +0200http://www.chalmers.se/sv/nyheterhttps://www.chalmers.se/en/departments/mc2/news/Pages/Nobel-Prize-winner-on-stage-at-upcoming-seminar.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Nobel-Prize-winner-on-stage-at-upcoming-seminar.aspxNobel Prize Laureate on stage at upcoming seminar<p><b>​The Nobel Laureate Konstantin Novoselov is the major highlight at the initiative seminar &quot;2D materials beyond graphene&quot; on 1-2 October in Palmstedtsalen at Chalmers. &quot;I think that it was crucial for him to see that we have managed to gather leading scientists in this growing field of research for our seminar&quot;, says Ermin Malic, associate professor at the Department of Physics and director of the organizing Graphene Centre at Chalmers (GCC).</b></p><div><span style="background-color:initial">Konstantin Novoselov, professor at the University of Manchester, was awarded the Nobel Prize in Physics 2010 for his achievements with the novel material graphene. He will open the seminar's second day with a lecture entitled &quot;Materials in the Flatland&quot;. </span><br /></div> <div>Ermin Malic is very pleased to welcome the prominent guest among the many other well-renowned speakers: </div> <div>&quot;Konstantin Novoselov is very busy and gets many of such invitations. Therefore, we are, of course, very happy that he picked our event. I think that it was crucial for him to see that we have managed to gather leading scientists in this growing field of research for our seminar. Certainly, the talk of Konstantin Novoselov is a highlight, but I am really excited about every single talk&quot;, he says.</div> <div> </div> <div><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/MC2/News/emalic_350x305.jpg" alt="" style="margin:5px" />Every year, the Excellence Initiative Nano has a topical event under the title Initiative Seminar. This year, the seminar is organized by the Graphene Center, which is an umbrella for all research at Chalmers on atomically thin 2D materials. </div> <div>&quot;Graphene is the most prominent representative of this class of materials. However, other 2D materials gain more and more importance in the current research. Therefore, we have put the focus of the seminar to 2D materials beyond graphene, in particular including monolayer transition metal dichalcogenides and related van der Waals heterostructures. We have invited leading experts in this emerging and technologically promising field of research&quot;, says Ermin Malic (to the left).</div> <div> </div> <h5 class="chalmersElement-H5">What's not to miss at the seminar? </h5> <div>&quot;The program is relatively dense covering a large spectrum of 2D material research. We will have 18 excellent talks in 8 different sessions including exciton phenomena, novel heterostructures materials, energy applications, opto-electronic applications as well as composite and bio applications.&quot;</div> <div> </div> <div>There will also be a poster session reflecting the 2D material research at Chalmers. </div> <div>&quot;The idea here is to offer Chalmers researchers the opportunity to present their research on 2D materials, now also including graphene. We would like to show the full spectrum and the excellence of 2D materials-based research at Chalmers.&quot;</div> <div> </div> <div>The participants can also look forward to hearing about exciting new research: </div> <div>&quot;Definitely. The field is very dynamic and there are still many open questions that are relevant for fundamental research and possible technological applications. The invited speakers perform cutting-edge research in this field, so we can expect many new insights and hopefully exciting discussions&quot;, says Ermin Malic.</div> <div> </div> <div>The two busy days aim at a broad audience; researchers, postdocs, PhD and master students and even industry representatives who are interested in novel developments in nanotechnology. Already, over 100 people are registered for the seminar, which takes place in the elegant auditorium Palmstedtsalen in Chalmers student union building. </div> <div>&quot;The large majority of the registered participants are researchers and students from Chalmers. However, some of the international speakers bring their own students to the seminar. We have also participants from other Swedish universities as well as company representatives.&quot;</div> <div> </div> <div>The invited speakers come from Sweden, Italy, Germany, Spain, Austria, Switzerland, Denmark, Russia, USA and UK. Among them are Frank Koppens (ICFO, Spain), Paulina Plochocka and Bernhard Urbaszek (CNRS, France), Thomas Müller (University of Vienna, Austria), Kristian Thygesen (DTU, Denmark) and Miriam Vitiello (National Research Council, Italy). Chalmers is represented by Timur Shegai (Physics), Saroj Dash (MC2), and Vincenzo Palermo (IMS).</div> <div> <span style="background-color:initial">&quot;Lunch and coffee breaks will offer a lot of time for deeper discussions&quot;, concludes Ermin Malic.</span></div> <div> </div> <div>Text: Michael Nystås</div> <div>Photo of Konstantin Novoselov: By Sergey Vladimirov (vlsergey) (Konstantin NovoselovUploaded by vlsergey) [CC BY 2.0  (https://creativecommons.org/licenses/by/2.0)], via Wikimedia Commons</div> <div>Photo of Ermin Malic: Private</div> <div><br /> </div> <div>The seminar is free of charge, but don’t forget to register no later than 19 September. <br /><a href="/en/centres/graphene/events/2D%20beyond%20graphene/Pages/Registration.aspx" target="_blank" title="Link to seminar page">Read more, register and see full schedule of the seminar​</a> &gt;&gt;&gt;</div> Thu, 13 Sep 2018 09:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/New-tree-of-knowledge-inaugurated.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/New-tree-of-knowledge-inaugurated.aspxNew tree of knowledge inaugurated<p><b>​A beautiful and fragrant dissertation tree was cheerfully inaugurated at MC2 in conjunction with the monthly staff coffee on 5 September. First doctoral student to nail his thesis on &quot;The Tree of Knowledge&quot; was Jens Schulenborg from the Applied Quantum Physics Laboratory.</b></p><div><span style="background-color:initial">To ceremonially nail dissertations on a Tree of Knowledge is a centuries-old academic nailed his famous 95 theses at the castle church in Wittenberg in 1517. The story was told by the head of MC2, Professor Mikael Fogelström, in his opening speech in Café Canyon.</span><br /></div> <div>&quot;One of the biggest outputs we have, which are most important for society, is actually training excellent students. Our new tree of knowledge is twice, we'll see how long it takes to fill this one up&quot;, he said.</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/cmkihlman_IMG_5220_665x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">The new tree complements the earlier one, which after 14 years has become so full that it does not hold one single dissertation more. It is made of spruce by MC2's legendary precision mechanician Carl-Magnus Kihlman (above), who has been working on it since May. The story also tells us that Kihlman also made the first tree as well.</span><br /></div> <div>&quot;We need to vigorously continue to train excellent people to take society forward. It is our biggest task&quot;, said Mikael Fogelström (below to the right).</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/mfogelstrom_IMG_5158_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />The honor of being the first to cut the band and nail his thesis on the new tree, passed to Jens Schulenborg, PhD student at the Applied Quantum Physics Laboratory. He will defend his thesis &quot;Dynamics of open fermionic nano-systems — a fundamental symmetry and its application to electron transport in interacting quantum dots&quot; on 3 October.</div> <div><span style="background-color:initial">Jens initially had some difficulty cutting the band because of a somewhat slack sax, which caused a lot of cheerfulness in Café Canyon. But at last he finished the task with bravura. Now the tree is inaugurated and Jens Schulenborg's dissertation flashes proudly on one of the branches.</span><br /></div> <div><br /></div> <div>Text and photo: Michael Nystås</div> <div><br /></div> <div><a href="https://research.chalmers.se/publication/504776">Read more about Jens Schulenborg's thesis</a> &gt;&gt;&gt;<span style="background-color:initial">​</span></div>Fri, 07 Sep 2018 09:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Martin-Eriksson-receives-Arne-Sjogrens-Prize.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Martin-Eriksson-receives-Arne-Sjogrens-Prize.aspxMartin Eriksson receives Arne Sjögren&#39;s Prize<p><b>​Martin Eriksson, former PhD student at the Department of Physics, is honored with Arne Sjögren&#39;s Prize, which is now awarded for the fifth time. The prize of SEK 30,000 goes to the most innovative dissertation in nanoscience, and was instituted in memory of the chalmerist Arne Sjögren (F68).</b></p><div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/MC2/News/arne_sjogren_a_250px.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />At his passing in 2012, Arne Sjögren (to the right) donated SEK 370,000 to Chalmers, the amount on which the prize was based. Martin Eriksson is rewarded for his dissertation &quot;There's Plenty of Room in Higher Dimensions – Nonlinear Dynamics of Nanoelectromechanical Systems&quot;, which he defended in September 2017. He received his award at a simple ceremony during the recent networking meeting with researchers in the excellence initiative Nanoscience and Nanotechnology at Marstrand.</span><br /></div> <div>&quot;I feel very proud and honored! It's been very exciting to come back and see old colleagues again and to get the opportunity to share my research, since many hours have been spent struggling to achieve the results&quot;, says Martin Eriksson.</div> <div>In connection with the award ceremony, led by the excellence initiative director Bo Albinsson, Martin Eriksson also held a lecture in which he presented his dissertation.</div> <div>&quot;His analysis of nonlinear dynamics in small mechanical systems, has paved the road for for new studies, experimental and theoretical, on this topic&quot;, the jury writes in the motivation.</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/meriksson_IMG_5060_665x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">After his dissertation, Martin Eriksson had a postdoctoral service at Chalmers. Then he developed his research through various collaborations with researchers in the United States. The new results are expected to be published in the scientific journals Physics Review Letters and Nature Nanotechnology.</span><br /></div> <div>Martin Eriksson recently took office at the consulting company ÅF in Gothenburg.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/balbinsson_IMG_4901_350x305.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" />The Excellence Initiative's director, Professor Bo Albinsson (to the left), is very pleased to be able to hand out Arne Sjögren's Prize, which is now awarded to a doctor in nanotechnology from Chalmers for the fifth time:</div> <div>&quot;The doctoral students are the bloodstream of Chalmers research, and awarding an annual prize to the best thesis in nanoscience is a very important task,&quot; he says.</div> <div><br /></div> <div>Text and photo: Michael Nystås</div> <div>Photo of Arne Sjögren: Hans Block</div> <div><br /></div> <div><br /></div> <div><br /></div> <div><a href="https://research.chalmers.se/publication/251102">Read Martin Eriksson's doctoral thesis</a> &gt;&gt;&gt;</div> <div><br /></div> <h5 class="chalmersElement-H5">About Arne Sjögren's Prize &gt;&gt;&gt;</h5> <div>​The prize has been founded to recognize an outstanding student in the Nanoscience and Nanotechnology area, with the prime aim to boost a future career in academia or industry. It has been made possible by a generous donation by Chalmers alumnus Arne Sjögren (F68) who in his will donated part of his estate to be used for the benefit of research in the area of nanoscience and nanotechnology at Chalmers.</div> <div><br /></div> <h5 class="chalmersElement-H5">Earlier Prize winners:</h5> <div>2013 (for best dissertation 2012) Samuel Lara-Avila</div> <div>2014 No prize was awarded</div> <div>2015 Jakob Woller</div> <div>2016 André Dankert</div> <div>2017 Jelena Lovric</div> <div>2018 Martin Eriksson</div> <div><br /></div> <div><a href="http://chalmeristbloggen.wordpress.com/2013/03/20/arne-testamenterade-370-000-till-chalmers">Read more about Arne Sjögren and his will (in Swedish)​</a> &gt;&gt;&gt;</div> Wed, 05 Sep 2018 08:00:00 +0200https://www.chalmers.se/en/departments/physics/news/Pages/A-sophisticated-microscope-to-Gothenburg-after-prize-competiton.aspxhttps://www.chalmers.se/en/departments/physics/news/Pages/A-sophisticated-microscope-to-Gothenburg-after-prize-competiton.aspxA sophisticated microscope to Gothenburg after prize-competiton<p><b>​Steven Jones, PhD student at the Department of Physics, Chalmers, recently won a brand-new Raman microscope together with his supervisor Professor Mikael Käll.</b></p><div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/mikroskopvinstbild200x270.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />The competition took place at a recent International Conference on Raman Spectroscopy (ICORS) on Jeju Island in South Korea. The task was to formulate and motivate the best project to be solved by using the sophisticated instrument from Nanobase.</div> <div><br /></div> <div>Steven Jones’ winning pitch was about his project on measuring the temperature in plasmonic nanoparticles by using so-called anti-Stokes Raman spectroscopy.<br /></div> <div><br /></div> <div>The microscope will be placed in Chalmers Material Analysis Laboratory (CMAL) and the instrument will be available for research activities at both Chalmers and the University of Gothenburg. </div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href="mailto:mia.hallerodpalmgren@chalmers.se">mia.hallerodpalmgren@chalmers.se​</a></div>Mon, 03 Sep 2018 00:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/150-nano-researchers-at-successful-networking-event.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/150-nano-researchers-at-successful-networking-event.aspx150 nano researchers at successful networking event<p><b>​150 participants, 65 research posters and a wide range of reputable speakers. It was a successful community building event for the excellence initiative Nanoscience and Nanotechnology in Marstrand on 20-22 August. &quot;This has evolved into the annual meeting place for the area&#39;s researchers, and with 150 participants it feels like we have established something really good,&quot; says director Bo Albinsson.</b></p><div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_balbinsson_IMG_4530_350x305.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" />Chalmers former Nanoscience and Nanotechnology Area of Advance has since been reorganized into an excellence initiative. It was the first time the researchers met in the new form for three days at Marstrands Havshotell, and overall the ninth networking meeting.</span><br /></div> <div>&quot;It is an opportunity to talk about both current and future issues. Those who are interested and active come here and know that it's good to meet and greet. Several have been here since the beginning – and it must mean that some think it's worth coming here,&quot; says Bo Albinsson (to the left), who is a professor of physical chemistry at the Department of Chemistry and Chemical Engineering.</div> <div>He is the director of the excellence initiative together with co-director Göran Johansson, Professor of Applied Quantum Physics and Head of the Applied Quantum Physics Laboratory at MC2.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_IMG_4657_robert_hadfield_bra_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />The participants were invited to a packed program with speakers from Sweden and other countries. Chalmers was represented by, among others, Per Delsing, Julie Gold and Giulia Ferrini. Among the invited international speakers were Robert Hadfield (to the right), University of Glasgow, and Tuomas Knowles, University of Cambridge.</div> <div><br /></div> <div>During the three days, 65 posters were exhibited and judged by a jury consisting of Professor Erwin Peterman, Vrije Universiteit in The Netherlands, and Professor Tero Heikkilä, University of Jyväskylä, Finland. The top three posters were rewarded with SEK 5,000 each, to be used for conference trips.</div> <div>On Wednesday morning, prizes for best posters were awarded to Maja Feierabend, Astrid Pihl and Ludvig de Knoop. Also, Arne Sjögren's award for best doctoral dissertation in the nano area 2017 was awarded to Martin Eriksson from the Department of Physics.</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_IMG_5050_arrangorer_b_665x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">The community building event was arranged by Astrid Pihl, </span><span style="background-color:initial">Maja Feierabend and </span><span style="background-color:initial">Ingrid Strandberg (picture above), PhD students at the departments of Chemistry and Chemical Engineering, Physics, and Microtechnology and Nanoscience –</span><span style="background-color:initial"> MC2.</span></div> <div>&quot;Preparations have taken place since April. At the end, there were a lot of logistics before all pieces fell into place,&quot; says Ingrid Strandberg, adding that all three were very pleased with the event.</div> <div><br /></div> <div>Text and photo: Michael Nystås</div> <div><br /></div> <div><a href="/en/research/strong/nano">Read more about the excellence initiative Nano</a> &gt;&gt;&gt;</div>Thu, 30 Aug 2018 10:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Now-the-quantum-computer-will-become-reality.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Now-the-quantum-computer-will-become-reality.aspxNow the quantum computer will become reality<p><b>​A billion-dollar research effort will make Sweden a world leader in quantum technology. Now, Chalmers researchers have begun work on developing a quantum computer with far greater computational power than today&#39;s best supercomputers.​</b></p><div><span style="background-color:initial">The days are currently full of interviews. Per Delsing, Professor of quantum device physics at Chalmers, is busy recruiting high-level researchers and doctoral students to help pull through a very challenging project: building a quantum computer that far exceeds today's best computers.</span><br /></div> <div><br /></div> <div>&quot;To get the right staff is the alpha and omega of it all. But it looks promising, we have received many good applications&quot;, says Per Delsing.</div> <div><br /></div> <div>The development of the quantum computer is the main project in the ten-year research program Wallenberg Centre for Quantum Technology, launched at the turn of the year, thanks to a donation of SEK 600 million from the Knut and Alice Wallenberg Foundation. With additional funds from Chalmers, industry and other universities, the total budget is landing nearly SEK 1 billion.</div> <div><br /></div> <div>The goal is to make Sweden a leading player in quantum technology. Indeed, recent research in quantum technology has placed the world on the verge of a new technology revolution – the second quantum revolution.</div> <div><a href="http://www.chalmers.se/SiteCollectionDocuments/Centrum/WACQT/Grafik%20kvantteknologi.pdf"><br />​</a>The first quantum revolution took place in the 20th century, <span><span><span><span><a href="/SiteCollectionDocuments/Centrum/WACQT/CM_15082018_Quantum%20technology_EN.pdf"><img src="/SiteCollectionImages/Institutioner/MC2/WACQT/EN_Quantum%20technology_750x446px.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:300px;height:178px" /></a></span></span></span></span>when one learned to utilize quantum mechanical properties of light and material. This led, among other things, <span><span></span></span><span><span><span><a href="http://www.chalmers.se/SiteCollectionDocuments/Centrum/WACQT/Grafik%20kvantteknologi.pdf"></a></span></span></span>to the<span><a href="http://www.chalmers.se/SiteCollectionDocuments/Centrum/WACQT/Grafik%20kvantteknologi.pdf"></a></span> laser and transistor – inventions that underpin information technology that largely shape today's society.</div> <div><br /></div> <div>Now scientists have also learned to control individual quantum systems as individual atoms, electrons and photons, which opens up new opportunities. In sight, there are extremely fast quantum computers, interception-proof communication and hyper-sensitive measurement methods.</div> <div><br /></div> <div>Interest is big worldwide. Decision makers and business leaders begin to realize that quantum technology has the potential to greatly change our society, for instance through improved artificial intelligence, secure encryption and more effective design of drugs and materials. Several countries are investing heavily and the EU is launching a scientific flagship in the area next year.</div> <div><br /></div> <div>&quot;If Sweden will continue to be a top level nation, we must be at the forefront here&quot;, says Peter Wallenberg Jr.</div> <div><br /></div> <div>Several universities and major computer companies, like Google and IBM, are aiming to try to build a quantum computer. The smallest building block of the quantum computer – the quantum bit – is based on completely different principles than today's computers (see graphic). This means that you can handle huge amounts of information with relatively few quantum bits. To surpass the computational power of today's supercomputers, it's enough with 50-60 quantum bits. The Chalmers researchers aim at reaching at least one hundred quantum bits within ten years.</div> <div><br /></div> <div>&quot;Such a quantum computer could, for example, be used to solve optimization problems, advanced machine learning and heavy calculations of molecule properties,&quot; says Per Delsing, who heads the research program.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Centrum/WACQT/Kvantdator_180518_11_340.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />The Chalmers researchers have chosen to base their quantum computer on superconducting circuits. They have worked with single superconducting quantum bits for almost 20 years and delivered many contributions to knowledge building within the field. Now they are going to scale up and get many quantum bits to work together.</div> <div><br /></div> <div>At the lab, they are currently working to improve the lifetime of single quantum bits. Quantum physiological conditions are extremely sensitive, and collapse if they are exposed to disturbances. Among other things, the researchers paint the inside of the experimental chamber black, so that disturbing microwaves that succeed in slipping through cables are quickly absorbed. They are also investigating and evaluating different strategies for linking quantum bits to each other, which is necessary to be able to perform proper calculations.</div> <div><br /></div> <div>&quot;In addition to the lifetime and the relationship between quantum bits, the number of quantum bits is an important piece of puzzle to solve. Making many of them is easy, but we need to find smart ways to utilize the equipment to control each of them. Otherwise, it will be very expensive,&quot; explains Per Delsing.</div> <div><br /></div> <div>In order for the project to get initiated councils, they are in the process of setting up a scientific board. Per Delsing is currently waiting for answers from eight quantum experts who were asked to be board members.</div> <div><br /></div> <div>&quot;They become a sounding board that we can discuss complex issues with, for instance how fast we will be able to scale the number of quantum bits. The technology we need to build the quantum computer is constantly evolving, and it's difficult to determine when it's time to buy it,&quot; he says.</div> <div><br /></div> <div>On the theory side, the recruitment of competent staff is at the focus right now. Theoretical physicist Giulia Ferrini, expert on quantitative calculations in continuous variables, was in place already in January and the recruitment process is ongoing with a number of applicants. A total of 15 people will be employed at Chalmers.</div> <div><br /></div> <div>&quot;We have received great response and good applicants. Getting the right people is the most important thing – the project does not get any better than the employees,&quot; says Göran Johansson, professor of applied quantum physics and one of the main researchers in the quantum computer project.</div> <div><br /></div> <div>The theoretical efforts will initially focus on developing a computer model of the quantum computer experiment so that they can help experimentalists forward through simulations.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Centrum/WACQT/Kvantdator_180518_16.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px;width:350px;height:234px" />&quot;A challenge is to identify early properties which are important in the model, so we do not include too many details when scaling up. Otherwise, we'll hit the ceiling for what a supercomputer can simulate before we reach up to 40 quantum bits,&quot; says Göran Johansson.</div> <div><br /></div> <div>Another important task for the theorists is to explore what a smaller quantum computer model can do. With eight-digit well-functioning quantum bits, one could drive the so-called Shors algorithm – which aroused the world's interest in building quantum computers - and crack today's encryption system. But the first quantum computers, which can do anything beyond what a regular computer can, will be significantly smaller.</div> <div><br /></div> <div>&quot;The question is what becomes the breakthrough application for a small quantum computer. We need to find out what a hundred bit quantum computer can solve for problems that someone is interested in knowing the answer to,&quot; says Göran Johansson.</div> <div><br /></div> <div>Here, collaboration with companies comes into the picture - from them, researchers can get tips for real-life and urgent applications to investigate. The Chalmers researchers have conducted discussions with Astrazeneca, who would have a lot to gain if they could calculate the characteristics of large molecules in their drug development, and Jeppesen who works to optimize aircraft crews and routes. The interest in becoming part of the quantum technology initiative is generally large among companies that have challenges that would be appropriate to solve with a quantum computer.</div> <div><br /></div> <div>&quot;They are keen to not miss the train. This can go quite quickly when it's getting started, and then it's important to have skills and be able to get up at the right pace,&quot; says Per Delsing.</div> <div><br /></div> <div>Text: Ingela Roos</div> <div>Photo: Johan Bodell</div> <div>Graphics: Yen Strandqvist</div> <div><br /></div> <div><a href="http://www.chalmers.se/sv/nyheter/magasin/Sidor/default.aspx">This is a text from Chalmers magasin #1 2018​</a></div> <div><br /></div> <h5 class="chalmersElement-H5">Facts about the Wallenberg Center for Quantum Technology</h5> <div>• Wallenberg Center for Quantum Technology is a ten-year initiative aimed at bringing Swedish research and industry to the front of the second quantum revolution.</div> <div>• The research program will develop and secure Swedish competence in all areas of quantum technology.</div> <div>• The research program includes a focus project aimed at developing a quantum computer, as well as an excellence program covering the four sub-areas.</div> <div>• The Wallenberg Center for Quantum Technology is led by and largely located at Chalmers. The areas of quantum communication and quantum sensors are coordinated by KTH and Lund University.</div> <div>• The program includes a research school, a postdoctoral program, a guest research program and funds for recruiting young researchers. It will ensure long-term Swedish competence supply in quantum technology, even after the end of the program.</div> <div>• Collaboration with several industry partners ensures that applications are relevant to Swedish industry.</div>Fri, 06 Jul 2018 09:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Fibre-optic-transmission-of-4000-km-made-possible-by-ultra-low-noise-optical-amplifiers.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Fibre-optic-transmission-of-4000-km-made-possible-by-ultra-low-noise-optical-amplifiers.aspxFibre-optic transmission of 4000 km made possible by ultra-low-noise optical amplifiers<p><b>​Researchers from Chalmers University of Technology, Sweden, and Tallinn University of Technology, Estonia, have demonstrated a 4000 kilometre fibre-optical transmission link using ultra low-noise, phase-sensitive optical amplifiers. This is a reach improvement of almost six times what is possible when using conventional optical amplifiers.​ The results are published in Nature Communications.</b></p><div><span style="background-color:initial"><img src="/SiteCollectionImages/Institutioner/MC2/News/figure_amplifier_comparison_eng_adj_180628_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />Video streaming, cloud storage and other online services have created an insatiable demand for higher transmission capacity. To meet this demand, new technologies capable of significant improvements over existing solutions are being explored worldwide.</span><br /></div> <div><br /></div> <div>The reach and capacity in today’s fibre optical transmission links are both limited by the accumulation of noise, originating from optical amplifiers in the link, and by the signal distortion from nonlinear effects in the transmission fibre. In this ground-breaking demonstration, the researchers showed that the use of phase-sensitive amplifiers can significantly, and simultaneously, reduce the impact of both of these effects. </div> <div><br /></div> <div>“While there remain several engineering challenges before these results can be implemented commercially, the results show, for the first time, in a very clear way, the great benefits of using these amplifiers in optical communication”, says Professor Peter Andrekson, who leads the research on optical communication at Chalmers University of Technology. </div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/peter_andrekson_170112_350x305.jpg" class="chalmersPosition-FloatLeft" alt="" style="margin:5px" />The amplifiers can provide a very significant reach improvement over conventional approaches, and could potentially improve the performance of future fibre-optical communication systems.</div> <div><br /></div> <div>“Such amplifiers may also find applications in quantum informatics and related fields, where generation and processing of quantum states are of interest, as well as in spectroscopy or any other application which could benefit from ultra-low-noise amplification”, says Professor Peter Andrekson (tpo the left).</div> <div><br /></div> <div>The research has been funded by the European Research Council (ERC), the Swedish Research Council, and the Wallenberg Foundation.</div> <div><br /></div> <div><span style="background-color:initial"><strong>Caption, figure in top of page:</strong> Recovered signal constellation diagrams comparing conventional amplification and phase-sensitive amplification in an amplifier noise limited regime (-2 dBm launch power) and a fibre nonlinearity limited regime (8 dBm launch power). Illustration: Samuel Olsson</span><br /></div> <div><br /></div> <div><strong>Photo of Peter Andrekson:</strong> Henrik Sandsjö</div> <div><br /></div> <h5 class="chalmersElement-H5">Read the paper &gt;&gt;&gt;</h5> <div>Olsson et al., Long-haul optical transmission link using low-noise phase-sensitive amplifiers, Nature Communications 9, 2513 (2018). DOI 10.1038/s41467-018-04956-5​</div> Thu, 05 Jul 2018 04:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Josef-Hansson-awarded-by-Chalmers-Foundation.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Josef-Hansson-awarded-by-Chalmers-Foundation.aspxJosef Hansson awarded by Chalmers Foundation<p><b>​​Josef Hansson, PhD student at the Electronics Materials and Systems Laboratory and chair of the MC2 PhD student council, has recently been awarded with a travel grant from &quot;Alice och Lars Erik Landahls stipendiefond&quot;.</b></p><div>The grant, 18 800 SEK, will be used for the 2018 IEEE 68th Electronic Components and Technology Conference in San Diego.</div> <div><br /></div> <div>Text: Susannah Carlsson</div> <div>Photo: Michael Nystås</div>Mon, 02 Jul 2018 13:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Graphene-assembled-film-shows-higher-thermal-conductivity-than-graphite-film.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Graphene-assembled-film-shows-higher-thermal-conductivity-than-graphite-film.aspxGraphene assembled film shows higher thermal conductivity than graphite film<p><b>​Researchers at Chalmers University of Technology, Sweden, have developed a graphene assembled film that has over 60 percent higher thermal conductivity than graphite film – despite the fact that graphite simply consists of many layers of graphene. The graphene film shows great potential as a novel heat spreading material for form-factor driven electronics and other high power-driven systems.</b></p><div><span style="background-color:initial">Until now, scientists in the graphene research community have assumed that graphene assembled film cannot have higher thermal conductivity than graphite film. Single layer graphene has a thermal conductivity between 3500 and 5000 W/mK. If you put two graphene layers together, then it theoretically becomes graphite, as graphene is only one layer of graphite.</span><br /></div> <div><br /></div> <div>Today, graphite films, which are practically useful for heat dissipation and spreading in mobile phones and other power devices, have a thermal conductivity of up to 1950 W/mK. Therefore, the graphene-assembled film should not have higher thermal conductivity than this. </div> <div><br /></div> <div>Research scientists at Chalmers University of Technology have recently changed this situation. They discovered that the thermal conductivity of graphene assembled film can reach up to 3200 W/mK, which is over 60 percent higher than the best graphite films.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/jliu_2016_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />Professor Johan Liu (to the right) and his research team have done this through careful control of both grain size and the stacking orders of graphene layers. The high thermal conductivity is a result of large grain size, high flatness, and weak interlayer binding energy of the graphene layers. With these important features, phonons, whose movement and vibration determine the thermal performance, can move faster in the graphene layers rather than interact between the layers, thereby leading to higher thermal conductivity. </div> <div>“This is indeed a great scientific break-through, and it can have a large impact on the transformation of the existing graphite film manufacturing industry”, says Johan Liu.</div> <div><br /></div> <div>Furthermore, the researchers discovered that the graphene film has almost three times higher mechanical tensile strength than graphite film, reaching 70 MPa.  </div> <div>“With the advantages of ultra-high thermal conductivity, and thin, flexible, and robust structures, the developed graphene film shows great potential as a novel heat spreading material for thermal management of form-factor driven electronics and other high power-driven systems”, says Johan Liu.</div> <div><br /></div> <div>As a consequence of never-ending miniaturization and integration, the performance and reliability of modern electronic devices and many other high-power systems are greatly threatened by severe thermal dissipation issues.</div> <div>“To address the problem, heat spreading materials must get better properties when it comes to thermal conductivity, thickness, flexibility and robustness, to match the complex and highly integrated nature of power systems”, says Johan Liu. “Commercially available thermal conductivity materials, like copper, aluminum, and artificial graphite film, will no longer meet and satisfy these demands.”</div> <div><br /></div> <div>The IP of the high-quality manufacturing process for the graphene film belongs to SHT Smart High Tech AB, a spin-off company from Chalmers, which is going to focus on the commercialization of the technology.</div> <div><br /></div> <h5 class="chalmersElement-H5">More about the research</h5> <div>The work has been done in collaboration with research teams at Uppsala University and SHT Smart High Tech AB in Sweden, Shanghai and Tongji University in China and University of Colorado Boulder in USA.</div> <div><br /></div> <div><strong>The paper is published online in the well-known scientific journal Small, with the weblink: </strong><a href="https://onlinelibrary.wiley.com/doi/full/10.1002/smll.201801346">onlinelibrary.wiley.com/doi/full/10.1002/smll.201801346</a></div> <div> </div> <div><strong>Related publications:</strong> </div> <div>Nat. Commun. 7:11281 doi: 10.1038/ncomms11281 (2016). <a href="http://www.nature.com/ncomms/2016/160429/ncomms11281/full/ncomms11281.html">www.nature.com/ncomms/2016/160429/ncomms11281/full/ncomms11281.html</a></div> <div>Carbon 106 (2016) 195-201, <a href="http://dx.doi.org/10.1016/j.carbon.2016.05.014">dx.doi.org/10.1016/j.carbon.2016.05.014</a> </div> <div>Carbon 61 (2013) 342-348,<a href="http://dx.doi.org/10.1016/j.carbon.2013.05.014">dx.doi.org/10.1016/j.carbon.2013.05.014​</a></div> <div>Advanced Materials, DOI: 10.1002/adma.201104408)</div> <div><br /></div> <h5 class="chalmersElement-H5">More about the graphene film</h5> <div>The manufacturing method of the graphene film is based on simultaneous graphene oxide film formation and reduction, on aluminum substrate, dry-bubbling film separation, followed by high-temperature treatment as well as mechanical pressing. These conditions enable the formation of the graphene film with large grain size, good atomic alignment, thin-film structure, and low interlayer binding energy. All these features have great benefit for the transfer of both high-frequency diffusive phonons and low-frequency ballistic phonons, and thereby lead to the improvement of in-plane thermal conductivity of the graphene film. Phonons are quantum particles that describe the thermal conductivity of a material.</div> <div><br /></div> <h5 class="chalmersElement-H5">For further information, please contact:</h5> <div>Johan Liu, Professor at the Department of Microtechnology and Nanoscience <span style="background-color:initial">–</span><span style="background-color:initial"> MC2, Chalmers University of Technology, Sweden, +46 31 772 30 67, </span><a href="mailto:jliu@chalmers.se">jliu@chalmers.se​</a></div> <span></span><div></div> <div><br /></div> <div>Photo Source: Johan Liu/Krantz Nanoart</div> Thu, 21 Jun 2018 13:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/New-challenges-ahead-for-Sheila-Galt.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/New-challenges-ahead-for-Sheila-Galt.aspxNew challenges ahead for Sheila Galt<p><b>For many years, Sheila Galt has been a positive and influential force at MC2. Now she takes on new challenges at Chalmers. On 1 June 2018, she joined the Department of Communication and Learning in Science. &quot;It feels wonderful – lots of fun ahead!&quot;, she says.</b></p><div><div>Sheila Galt is a professor of applied electromagnetics. She studied at the department of Applied Electron Physics at Chalmers and got her doctoral degree in 1990 with the thesis &quot;Optical fiber scattering and biological electromagnetic effects&quot;.</div> <div>She remained at the department until 2001 when she joined the Photonics Laboratory at MC2. 17 years later, it is time to move on and test her wings at Communication and Learning in Science, where she formally belongs to the Division of Engineering Education Research (EER). In fact, she already started at her new address on 1 June.</div> <div>&quot;It feels just right since their activities correspond well with my own. I'm usually joking that I will do the same things I've always done, but with other colleagues to discuss educational ideas with. For parts of my work, it feels like a more logical home base&quot;, says Sheila.</div></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/sheila_IMG_3169_665x330.jpg" alt="" style="margin:5px" /><br /><h5 class="chalmersElement-H5">Taking up educational research</h5> <div>She hopes to continue to work with much of what she has done so far, but exactly what it will look like is still unclear.</div> <div>&quot;I will drop some of the activities I've had at MC2, and start more educational research. Most of what I have taken care of at the Photonics Laboratory, I will have to let go. There will be changes. I've been teaching Laser Engineering and dealing with labs for quite a few years and developed new photonics related labs in a number of courses. It has been great fun to do&quot;, says Sheila.</div> <div>Until recently, she was vice-head for the undergraduate education at MC2.</div> <div>&quot;It meant both strategic thinking – how we should improve the courses and how teachers can be provided with more chances to teach – and to make sure the courses are properly staffed, delivered according to our agreements, and that we take care of our commitments properly on a daily basis. Then it also involved being a member of Chalmers Joint Vice-Head Group, which works a bit more strategically. If you identify a need for a change in routines for how the undergraduate education is organized from a teacher perspective, then it is the vice-head's task to accomplish that.&quot;</div> <div>The assignment as vice-head for the undergraduate education has been taken over by Per Rudquist.</div> <div><br /></div> <h5 class="chalmersElement-H5">Outreaching role</h5> <div>Sheila Galt is perhaps best known for her role in school outreach programs, where she worked extensively with The International Science Festival in Gothenburg, the Wallenberg Physics Prize (connected with the International Physics Olympiad) and other activities aimed at children and adolescents. Her laser shows have almost become an institution, and the Newton performances at the house of William Chalmers became very noteworthy. The other year she contributed to a children’s program on the radio. Many of these popular activities have unfortunately ceased.</div> <div>Nor is the much-appreciated activity &quot;Nanoscientist for a day&quot;, which Sheila ran along with Per Lundgren during the Science Festival, remaining.</div> <div>&quot;I think that these are activities that should have been continued. We will see how it will be in the future.&quot;</div></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/sheila_IMG_3155_665x330.jpg" alt="" style="margin:5px" /><br /><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">Laser shows at Universeum</span><br /></div> <div><div>Instead, Sheila gets a chance to continue her outreach work with a 60% assignment at the science centre Universeum. There, among other things, she has continued to offer her laser shows.</div> <div>&quot;I have shared responsibility for activities offered for the public at the so-called “Teknoteket”. This is a technology-oriented makerspace where we have specific themes that are replaced approximately every two months. Here we need to have long-term planning and be able to develop new ideas and to freshen up old ones&quot;, she says.</div> <div>The challenge has been to find activities that work for a large range of ages, from preschoolers and upwards. Everyone is welcome to participate and you do not have to book time in advance.</div> <div>&quot;My aim has been to do more than just raise interest in technology. It is very important that we help people to enjoy technology, science and math. You should be able to have fun with technology while learning something.&quot;</div> <div>In the theme called &quot;Värmeverket&quot;, visitors were able to explore the heat of the human body and of the planet Earth, including studying the effects of exercise and the greenhouse effect. Visitors also had to think about how they themselves could contribute to the solution of the global warming problem.</div> <div>&quot;Thinking about how technology is used is a specially important issue for me, as well as linking sustainability ideas to the subject. I'm quite proud of our success.&quot;</div> <div>The assignment at Universeum ends at the end of the year, but Sheila would like to continue if possible.</div></div> <div></div> <h5 class="chalmersElement-H5">The recognition meant the most</h5> <div><div>During the period 2009-2016, Sheila Galt was the leader of Chalmers gymnasiecentrum where she was a driving force, but the centre no longer remains in its original form. It was an operation that was later awarded, 2014.</div> <div>&quot;It started with Bo Håkansson's award &quot;Technician of the year&quot; in 2013. The prize included a part that he could donate for some good purpose and then he chose us.&quot;</div> <div>But the money was not the most important aspect for Sheila. The recognition meant more.</div> <div>&quot;To get an acknowledgement that my struggles have been worth the effort,&quot; she says.</div> <div>Together with Per Lundgren, Sheila Galt was also honored with Sigurd Andersson's scholarship for best peer effort in 2014, something that also pleased her a lot.</div></div> <h5 class="chalmersElement-H5">Born in Canada</h5> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/sheila_IMG_3179_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /><div>Sheila Galt was born in 1956 in Kingston, Canada. She laughs at saying that she never really grew up.</div> <div>&quot;I have no memories at all from Kingston. We moved to England when I was one year, and from there to Penticton, located in the southernmost part of the Canadian province of British Columbia.&quot;</div> <div>Dad was a radio astronomer and the Penticton conditions were ideal for that type of work. The town is located near a valley with mountains on all sides, pretty much like a bowl. There you could work in protection from electromagnetic interference.</div> <div>In 1972, the family moved to Sweden.</div> <div>&quot;My father wanted to borrow instruments from Onsala Space Observatory, and brought the whole family. We studied Swedish intensively and I started at the music program at the high school Hvitfeldtska. That year became a turning point in my life. I had been aiming at having music as my profession, but after a year I realized that I didn't want to fight so hard, although I still enjoyed music a lot, and still do. So I decided to engage more in physics.&quot;</div> <div>Her technology interest comes from her father.</div> <div>&quot;He was always coming up with new nerdy fun. He played a lot with us. Among other things, we remodeled old bikes. Suddenly a bicycle had to be pedaled backwards to move forward. We often went with dad to the observatory and played there. Sometimes I got my own problems to solve, such as finding bugs in his software. Dad used to buy kits for electronics and taught us to build our own music amplifier and our own oscilloscope. We had new projects all the time&quot;, recalls Sheila.</div></div> <h5 class="chalmersElement-H5">Met the husband</h5> <div><div>At Hvitfeldtska she also met her future life companion:</div> <div>&quot;Anders was the tallest person in class and I was the shortest. He eventually became my husband!&quot;</div> <div>The family lives in a house in Sävedalen with two sons aged 25 and 19.</div> <div>&quot;Our youngest son went to the same music program as I did at Hvitfeldtska and met his girlfriend there!&quot;</div> <div>Sheila has played the piano since she was a small child. During her school years, she also received a lot of prizes for her talent. She says modestly that she got awarded because she signed up for all the competitions she could find...</div> <div>&quot;But I often mention that I learned to read music even before I could read ordinary text.&quot;</div> <div>There is also room for some spare time in her life. She enjoys gardening and choral singing.</div> <div>&quot;I love to grow vegetables in the garden, preferably those that are cheap to buy and easy to grow. I also sing in the little choir Corona. I usually say it’s a group of old, left-over Chalmers choristers, because almost all members have a Chalmers background. There are also a lot of other things I like to do but don’t take time for. When I retire, I’ll resume my interests in pottery and sewing.&quot;</div></div> <h5 class="chalmersElement-H5">&quot;Like ingenious stuff&quot;</h5> <div><div>She has several driving forces, but at the bottom of it all is a basic interest in technology, which she describes as &quot;bubbly&quot;.</div> <div>&quot;I like ingenious stuff. My mom usually jokes with me and says I'm like Don Quixote; if I see a windmill, I'll go off and try to fight it! I’m drawn to tackling what I see as important problems, even though they might seem almost irresolvable, such as teaching technology students to apply ethical thinking. I took on the challenge in the Fundamentals of Photonics course, and I actually believe we succeeded!&quot;</div> <div>Other major driving forces are curiosity and an interest in gender equality and sustainability.</div> <div>&quot;It must be fair in terms of a sustainable world. Much of what the UN writes in its sustainability goals, I have tried to push for in my own small context.&quot;</div></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/sheila_IMG_3166_665x330.jpg" alt="" style="background-color:initial;margin:5px" /> </div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">Long-term student recruitment</span><br /></div> <div><div>In her outreach activities, Sheila Galt has worked persistently with long-term student recruitment. She has seen the twinkle in the eyes of the children when the penny dropped. She has also received a hug now and then as thanks afterwards.</div> <div>But how many future Chalmers students she has inspired and ultimately attracted to the university, she will never know:</div> <div>&quot;I have no idea. No one has ever come and let me know about this. I have asked myself many times if it could be followed up in some way, but I have come to the conclusion that it is not feasible. The efforts are so small for each child and it is impossible to say if we managed to influence anyone in just one hour's time. It's probably much more effective if you can influence their teachers. We need to provide inspiration and tools for the teachers, and we try to do this, among other things, in the Master's program Learning and Leadership, where the students become both engineers and high school teachers.&quot;</div> <div>In this program, Sheila teaches and examines the practicum courses, which involve the students practice-teaching at local high schools. She will continue to do that.</div></div> <div><div> </div> <h5 class="chalmersElement-H5">Many small seeds and steps</h5></div> <div><span></span><div>You can certainly say that Sheila Galt has been planting small seeds in children and adolescents, although the results can’t easily be measured.</div> <div>&quot;Of course, you do not know how many other people in these children’s environment are nudging and encouraging their technical interests. They make a bigger difference, and it is not certain that my little contribution will be a part of the choices these young people will make in their lives. But it's nice to imagine it could be so&quot;, she says.</div> <div>On 15 June, Sheila Galt was thanked by colleagues and friends with coffee and cake.</div> <div>&quot;I want to encourage all the small steps which are continuously being taken at Chalmers in order for the educational programs to keep growing better and better. It feels great to be part of that work and see how everyone works together to make it happen. I want to continue to support that&quot;, she concludes.</div></div> <div>​</div> <div>Text and photo: Michael Nystås</div>Thu, 14 Jun 2018 02:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Multiple-lasers-could-be-replaced-by-a-single-microcomb.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Multiple-lasers-could-be-replaced-by-a-single-microcomb.aspxMultiple lasers could be replaced by a single microcomb<p><b>​Every time we send an e-mail, a tweet, or stream a video, we rely on laser light to transfer digital information over a complex network of optical fibers. Dozens of high-performance lasers are needed to fill up the bandwidth and to squeeze in an increasing amount of digital data. Researchers have now shown that all these lasers can be replaced by a single device called a microcomb.​</b></p><div><span style="background-color:initial">A microcomb is an optical device that generates very sharp and equidistant frequency lines in a tiny microphotonic chip. This technology was developed about a decade ago and is now reaching a maturity level that enables new applications, including lidar, sensing, timekeeping and of course optical communications.</span><br /></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/victor_torres_chalmers_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />The soul of a microcomb is a tiny optical cavity that confines laser light in space. Therefore, this technology provides a fantastic playground to explore new nonlinear physical phenomena. These conditions have now been utilised by researchers at Chalmers University of Technology, Sweden, in cooperation with researchers at Purdue University, USA. Victor Torres Company (to the right), Associate Professor at Chalmers, is one of the authors of a paper that was recently published in the journal Nature Communications.</div> <div><span style="background-color:initial">“We observed that the optical frequencies of the microcomb interfered destructively over a short period of time, thus providing the formation of a wave inside the cavity that resembled a ‘hole’ of light. The interesting aspect of this waveform is that it yielded a sufficient amount of power per frequency line, which was essential to achieve these high-performance experiments in fiber communication systems”, says Victor Torres Company.</span><br /></div> <div><br /></div> <div>The physical formation of these “dark” pulses of light is far from being fully understood, but the researchers believe that their unique properties will enable novel applications in fiber-optic communication systems and spectroscopy. </div> <div><span style="background-color:initial">“I</span><span style="background-color:initial"> will be able to explore these aspects thanks to the financial support of the European Research Council (ERC)”, says Victor Torres Company. “This is a bright start to better understand the formation of dark pulses in microresonators and their potential use in optical communications. The research could lead to faster and more power-efficient optical communication links in the future.”</span><br /></div> <div><br /></div> <div>The results are the fruit of a collaborative effort between researchers at the School of Electrical and Computer Engineering at Purdue University, who fabricated the samples, and the group of Professor Peter Andrekson at the Photonics Laboratory at Chalmers, which hosts world-class experimental facilities for fiber-optic communications research.</div> <div><span style="background-color:initial">“</span><span style="background-color:initial">Our findings do not represent the first demonstration of a microcomb in fiber communications, but it is the first time that the microcomb has achieved a performance compatible with the strong demands of future communication systems”, says Peter Andrekson, who is also one of the co-authors of the paper. </span><br /></div> <div><br /></div> <div>The main author is Attila Fülöp, who defended his doctoral thesis “Fiber-optic communications with microresonator frequency combs” at the Photonics Laboratory in April.</div> <div><span style="background-color:initial">“Working with the microcomb and this experiment has been a great experience. This proof-of-concept demonstration has allowed us to explore the requirements for future chip-scale data transmitters while at the same time proving the potential of this very exciting dark pulse comb technology”, he says.</span><br /></div> <div><br /></div> <div>Text: Michael Nystås<br />Photo of  <span style="background-color:initial">Victor Torres Company: Michael Nystås</span></div> <div><br /></div> <div><strong style="background-color:initial">Read the paper &gt;&gt;&gt;</strong><br /></div> <div>Fülöp et al., High-order coherent communications using mode-locked dark-pulse Kerr combs from microresonators, Nature Communications 9, 1598 (2018). DOI 10.1038/s41467-018-04046-6</div> <div><a href="https://research.chalmers.se/publication/17abc87f-538b-4039-9c3b-526d0cc82da1">research.chalmers.se/publication/17abc87f-538b-4039-9c3b-526d0cc82da1</a></div> <div><br /></div> <div><a href="/en/departments/mc2/news/Pages/Prestigious-EU-funding-for-Victor-Torres-Company.aspx"><strong>Read more about the ERC grant to Victor Torres Company </strong><span style="background-color:initial;color:rgb(51, 51, 51);font-weight:300">&gt;&gt;&gt;</span></a></div>Tue, 12 Jun 2018 07:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Tord-Claeson-appointed-to-jubilee-doctor.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Tord-Claeson-appointed-to-jubilee-doctor.aspxTord Claeson appointed to jubilee doctor<p><b>​Tord Claeson, well-known professor at the Department of Microtechnology and Nanoscience –​ MC2, defended his thesis for a doctoral degree of technology in 1967. On 2 June, he was promoted to jubilee doctor at the solemn Doctoral Conferment Ceremony in the Concert Hall in Göteborg. &quot;I&#39;ve been looking forward to this for 50 years,&quot; he says jokingly.</b></p><div><span style="background-color:initial">Jubilee doctor is at title earned by individuals who received their doctoral degrees fifty years earlier at the same university. Tord Claeson was the only one to be honored in this way in 2018.</span><br /></div> <div><br /></div> <div>He became civil engineer in the field of engineering physics in 1963, and continued his academic career by defending his thesis in 1967, resumed by assignments as researcher at both Chalmers and Gothenburg University. In 1982, Tord Claeson was appointed to professor of physics at Chalmers.</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/tordc_doktorspromotion_180602__S8A0246-1_665x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">Over the years, he has also been a guest researcher at the University of California and Stanford University in the United States, and has stayed for longer periods in Japan and Korea.</span><br /></div> <div><br /></div> <div>Tord Claeson's research has included basic condensed matter physics as well as different applications, primarily hypersensitive sensors based on superconducting tunnel effects. He has also been deeply engaged in the field of high-temperature superconductivity, regularly used the <span style="background-color:initial">synchrotron radiation facility at Stanford, and advocated facilities for nanostructures at Chalmers.</span></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/tclaeson_690x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">He is a member of the Royal Society of Arts and Sciences in Gothenburg (KVVS), the Royal Swedish Academy of Engineering Sciences (IVA), the Royal Swedish Academy of Sciences (KVA) and the Korean and Flemish science academies. He has also been a member of the Nobel Committee for Physics, and has received several awards, including the Jacob Wallenberg Prize, the IVA Gold Medal, and the Celsius and Chalmers Medals.</span><br /></div> <div><br /></div> <div>Tord Claeson is one of the legendary MC2 pioneers and has been a part of the department ever since it was founded in the year 2000. Many are the PhD students who have had him as supervisor over the years. Tord Claeson has fostered many of today's leaders <span style="background-color:initial"> </span><span style="background-color:initial;font-size:11pt;line-height:16.8667px;font-family:calibri, sans-serif">–</span><span style="background-color:initial"> both those who have stayed in different positions at MC2, and those who have undertaken leading challenges in Sweden and abroad.</span></div> <span></span><div></div> <div><br /></div> <div>Tord Claeson was born in Varberg in 1938. In November he turns 80 years old.</div> <div><br /></div> <div>Text: Michael Nystås and the Communications and Marketing department</div> <div>Photo: Susannah Carlsson and Anna-Lena Lundqvist</div> <div><br /></div> <div><a>Read more about the Doctoral Conferment Ceremony</a> &gt;&gt;&gt;</div>Mon, 21 May 2018 10:00:00 +0200https://www.chalmers.se/en/departments/see/news/Pages/Advanced-biofuels-can-be-produced-extremely-efficiently.aspxhttps://www.chalmers.se/en/departments/see/news/Pages/Advanced-biofuels-can-be-produced-extremely-efficiently.aspxAdvanced biofuels can be produced extremely efficiently, confirms industrial demonstration<p><b>​A chance to switch to renewable sources for heating, electricity and fuel, while also providing new opportunities for several industries to produce large numbers of renewable products. This is the verdict of researchers from Chalmers University of Technology, Sweden, who now, after ten years of energy research into gasification of biomass, see an array of new technological achievements.&quot;The potential is huge! Using only the already existing Swedish energy plants, we could produce renewable fuels equivalent to 10 percent of the world&#39;s aviation fuel, if such a conversion were fully implemented,” says Henrik Thunman, Professor of Energy Technology at Chalmers.​</b></p><h5 class="chalmersElement-H5"><img src="/SiteCollectionImages/Institutioner/SEE/Nyheter/Popreport_cover.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />Report detailing 200 man-years of research  </h5> <div>​We have summarized the work of the last ten years at Chalmers Power Central and GoBiGas in the report: &quot;GoBiGas demonstration – a vital step for a large-scale transition from fossil fuels to advanced biofuels and electrofuels&quot;. Researchers at the division of Energy Technology at the Department of Space, Earth and Environment at Chalmers have worked together with colleagues at the departments of Chemistry and Chemical Engineering, Microtechnology and Nanoscience, Technology Management and Economics, Biology and Biological Engineering, Mechanics and Maritime Sciences​ as well as a wide range of Swedish and international collaborative partners in industry and academia. <a href="http://www.chalmers.se/SiteCollectionDocuments/SEE/News/Popularreport_GoBiGas_results_highres.pdf" style="outline:none 0px"><span style="background-color:initial">Download the report: </span><span style="background-color:initial">GoBiGas demonstration – a vital step for a large-scale transition from fossil fuels  to advanced biofuels and electrofuels. </span></a>(21 Mb). <div><h6 class="chalmersElement-H6">​Pathway to a radical transition</h6></div> <div><div>How to implement a switch from fossil-fuels to renewables is a tricky issue for many industries. For heavy industries, such as oil refineries, or the paper and pulp industry, it is especially urgent to start moving, because investment cycles are so long. At the same time, it is important to get the investment right because you may be forced to replace boilers or facilities in advance, which means major financial costs. Thanks to long-term strategic efforts, researchers at Sweden´s Chalmers University of Technology have now paved the way for radical changes, which could be applied to new installations, as well as be implemented at thousands of existing plants around the globe.</div> <div><br /></div> <div>The solution presented involves widespread gasification of biomass. This technology itself is not new. Roughly explained, what is happening is that at high temperatures, biomass is converted into a gas. This gas can then be refined into end-products which are currently manufactured from oil and natural gas. The Chalmers researchers have shown that one possible end-product is biogas that can replace natural gas in existing gas networks.</div> <h6 class="chalmersElement-H6">The problems with tar are solved​</h6> <div><img src="/SiteCollectionImages/Institutioner/SEE/Nyheter/tar-problem-before-and-after.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />Previously, the development of gasification technology has been hampered by major problems with tar being released from the biomass, which interferes with the process in several ways. Now, the researchers from Chalmers’ division of Energy Technology have shown that they can improve the quality of the biogas through chemical processes, and the tar can also be managed in completely new ways, see images to the right. This, in combination with a parallel development of heat-exchange materials, provides completely new possibilities for converting district heating boilers to biomass gasifiers. <a href="https://www.youtube.com/watch?v=1D2sWiGkcFg">Watch an animation with more details about how the problems with tar has been solved​</a>. </div> <div><br /></div> <div>&quot;What makes this technology so attractive to several industries is that it will be possible to modify existing boilers, which can then supplement heat and power production with the production of fossil-free fuels and chemicals.&quot;, says Martin Seemann, Associate Professor in Energy Technology at Chalmers.</div> <div><br /></div> <div>“We rebuilt our own research boiler in this way in 2007, and now we have more than 200 man-years of research to back us up,” says Professor Henrik Thunman. “Combined with industrial-scale lessons learned at the GoBiGas (Gothenburg Biomass Gasification) demonstration project, launched in 2014, it is now possible for us to say that the technology is ready for the world.” </div> <h6 class="chalmersElement-H6">Many applications</h6> <div>The plants which could be converted to gasification are power and district heating plants, paper and pulp mills, sawmills, oil refineries and petrochemical plants.</div> <div><br /></div> <div>“The technical solutions developed by the Chalmers researchers are therefore relevant across several industrial fields”, says Klara Helstad, Head of the Sustainable Industry Unit at the Swedish Energy Agency. “Chalmers´ competence and research infrastructure have played and crucial role for the demonstration of advanced biofuels within the GoBiGas-project.”</div> <div><br /></div> <div>The Swedish Energy Agency has funded energy research and infrastructure at Chalmers for many years. </div> <div>How much of this technological potential can be realised depends on the economic conditions of the coming years, and how that will affect the willingness of the industrial and energy sectors to convert. The availability of biomass is also a crucial factor. Biomass is a renewable resource, but only provided we do not deplete the conditions for its biological production. There is therefore a limit for total biomass output.</div></div> <div><br /></div> <div>Text: Christian Löwhagen, Johanna Wilde. </div> <div>Translation: Joshua Worth.</div> <div>Tar illustration: BOID. </div> <div><br /></div> <div><a href="http://goteborgenergi.streamingbolaget.se/video/156153/link"><img src="/SiteCollectionImages/Institutioner/SEE/Nyheter/Process-video.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" />Watch a film detailing the process in the GoBiGas Plant</a>. </div> <div><br /></div> <div><a href="http://www.mynewsdesk.com/uk/chalmers/pressreleases/advanced-biofuels-can-be-produced-extremely-efficiently-confirms-industrial-demonstration-2511833">Read more in the international press release. ​</a></div> <div>​<br /></div></div>Mon, 21 May 2018 07:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/Ida-Klappevik-and-Johan-Bremer-awarded-for-best-masters-theses.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/Ida-Klappevik-and-Johan-Bremer-awarded-for-best-masters-theses.aspxIda Kläppevik and Johan Bremer awarded for best master&#39;s theses<p><b>​Ida Kläppevik and Johan Bremer have been awarded with the Microwave Road Scholarship for best master&#39;s thesis 2017, in the area of antenna and microwave engineering.</b></p><div><span style="background-color:initial">Ida Kläppevik gets the award of 10 000 SEK and a diploma for her thesis “Analysis, construction and evaluation of radial power divider/combiner”. Johan Bremer is awarded for his thesis “Compensation of thermal effects by dynamic bias in low noise amplifiers”. The winners got their scholarships at the Microwave Road seminar on Space and Satellite on 25 April, handed over to them by Johan Carlert, chairman of Microwave Road.</span><br /></div> <div><br /></div> <div>Microwave Road is a national cluster focusing on international technology and market development uniting industry, universities, research institutes and regional and national public authorities.</div> <div><br /></div> <div><div>Read Ida Kläppevik's thesis &gt;&gt;&gt;</div> <div>http://studentarbeten.chalmers.se/publication/252937-analysis-construction-and-evaluation-of-a-radial-power-dividercombiner</div> <div><br /></div> <div>Read Johan Bremer's thesis &gt;&gt;&gt;</div> <div>http://studentarbeten.chalmers.se/publication/252233-compensation-of-thermal-effects-by-dynamic-bias-in-low-noise-amplifiers</div> <div><br /></div> <div>Read more about the scholarship &gt;&gt;&gt;</div> <div>http://www.microwaveroad.se/microwave-road-stipendiet.html</div></div>Fri, 27 Apr 2018 09:00:00 +0200https://www.chalmers.se/en/departments/mc2/news/Pages/More-time-for-trombones-and-airplanes.aspxhttps://www.chalmers.se/en/departments/mc2/news/Pages/More-time-for-trombones-and-airplanes.aspxMore time for trombones and airplanes<p><b>​Göran Alestig, research engineer at the Nanofabrication Laboratory at MC2, leaves Chalmers after 16 years. Now he gets more time to grow his big interests – the music and the aviation –​ and maybe find some brand new. &quot;It feels unexpected not to come here anymore. At the same time, it will be exciting to see what to find afterwards,&quot; says the new retiree.</b></p><div><span style="background-color:initial">Göran Alestig is basically a chalmerist. He studied as a MSc in Engineering Physics, graduated in 1977, and became a PhD at Chalmers in 1986 with the dissertation &quot;Some studies related to laser annealing of ion implanted silicon&quot;. He was born and raised in Karlstad. After the dissertation, Göran Alestig worked at ABB Hafo in Järfälla. The work area was mainly process development and CMOS processes.</span><br /></div> <div>&quot;When the company was closed down and parts of the business moved to England, I followed and worked there for three years. Then I thought it was time to move to Sweden again. I was looking for a job and found this lab just finished. It was very good,&quot; says Göran Alestig.</div> <div><br /></div> <h5 class="chalmersElement-H5">Very mixed role</h5> <div>In 2002 he returned to Chalmers and began his service at the newly established Nanofabrication Laboratory.</div> <div>&quot;The lab was almost ready and most of it was in place. However, I was not involved during the intensive construction stage or when equipment was installed. Everything was very new back then.&quot;</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/galestig_665x330.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">He describes his role on MC2 as very mixed. He has served as the business community's entrance to the clean room. Potential business users have called or e-mailed Göran with questions about getting into the lab and use machines and instruments.</span><br /></div> <div>&quot;Usually they tell you what they want to do and ask if it's possible. For example, do we have a certain equipment or process? Then I check it up and gets back to them. We may not always be able to help in just the way they wanted, but can suggest another solution and an approximate amount of time and cost.&quot;</div> <div>&quot;We have companies that work in the lab themselves, mainly those that continue year after year, and also orders that go straight in here without their own staff doing anything in the lab. It has been an interesting and very diverse mix of companies and assignments over the years,&quot; he says.</div> <div><br /></div> <h5 class="chalmersElement-H5">Most rewarding to help researchers</h5> <div>Göran has also been responsible for all offers and invoices to companies. In addition to this, he, like everyone in the lab group, spent a lot of time in the cleanroom and performed service and repairs, trained new users on the equipment, and helped when needed to run or develop recipes and programs in the machines.</div> <div>&quot;Most rewarding has been to help the researchers in the lab to move on with what they are doing, help them to work in different equipment, and make sure they can interpret their results with the aid of measuring equipment. I have always received very good appreciation and feedback when I succeeded in getting something done, getting fixed something that was annoying and understand what is happening together,&quot; says Göran Alestig.</div> <div><br /></div> <div>Research engineer Martin Hollertz will succeed as new contact for companies. When Göran now leaves, he wants to ensure that the transition goes as smooth as possible. He is also happy for all the positive feedback companies give him:</div> <div>&quot;The lab gets very much praise, the companies think it worked well and it is fun to hear.&quot;</div> <div><br /></div> <h5 class="chalmersElement-H5">What will you miss the most?</h5> <div>&quot;Both the people I have worked with and the advanced technical environment. It's easy to get home blind when you go inside and work, but it's a very advanced lab with very exciting technology. That's how it is. Even if you can come back and visit, it will not be the same.&quot;</div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/galestig_665x330b.jpg" alt="" style="margin:5px" /><br /><span style="background-color:initial">In May, Göran Alestig turns 65 years. He made his last working day on 26 April and was thanked by cake and presents. Staying at 67 was never an option:</span><br /></div> <div>&quot;I think you should go when you have the opportunity and hopefully have a number of pretty healthy years left. It's unwise not to take advantage of that opportunity,&quot; he says.</div> <div><br /></div> <h5 class="chalmersElement-H5">Music and aviation big interests</h5> <div>For many years he has lived in an apartment in Göteborg. He has never had a family of his own, but he has a large circle of friends he meets - not least in music and aviation.</div> <div>&quot;I have been active for a long time in aviation clubs, both in Säve and recently in Borås. I have also worked for a long time flight instruction in Borås. I have taught a little and it has also been fun, so I will continue.&quot;</div> <div>His own aircraft was sold a few years ago. Now he has access to planes via the club. However, he does not fly as much as before.</div> <div><br /></div> <div>Music is another great interest. Göran plays trombone in three different orchestras; two big bands, The Orchestra Big Band and Frölunda Storband, and Mölndal's Symphonic Band. In two of them, the well-known MC2 professor Herbert Zirath also plays.</div> <div><br /></div> <h5 class="chalmersElement-H5">Do you have any other future plans?</h5> <div>&quot;I want to grow the interests I have and spend more time on them. Maybe it will be a bit of traveling too,&quot; concludes Göran Alestig.</div> <div><br /></div> <div>Text and photo: Michael Nystås​</div> Thu, 26 Apr 2018 09:00:00 +0200