News: Materialvetenskap related to Chalmers University of TechnologyFri, 17 May 2019 12:33:43 +0200 international celebration of new research possibilities<p><b>​Chalmers&#39; new electron microscope enables researchers to study and design the smart materials of the future. On 15 May, it was time for the great unveiling of the huge transmission electron microscope (TEM).</b></p><span style="background-color:initial">The unique TEM weighs about five tons and it allows researchers to explore the world of individual atoms. More than a hundred people attended the grand inauguration event and took the chance to learn more about the new possibilities with soft microscopy and materials design. Professor Eva Olsson was the chair of the grand opening ceremony at Chalmers, where researchers and specialists from all over the world created a network – through tying colourful ribbons together. <br /><br /></span><div>Even Chalmers' founder, William Chalmers, seemed to have gained a new lease of life thanks to the excitement of the new microscope. He (or rather Philip Wramsby) moderated the event and let the audience join a journey down the memory lane. </div> <div><br /></div> <div>In the afternoon the seminars at Chalmers attracted many researchers from near and far. The lecture hall Kollektorn was completely crowded when several leading international researchers held their presentations. Special invitees included members of a European network for electron microscopy, in which Chalmers is involved.</div> <div><br /></div> <div>As the microscope has Japanese origin, representatives of the manufacturer, JEOL, from Japan as well as Europe visited Chalmers for this special event. They expressed their joy of seeing the unique instrument installed in Sweden. The day ended, as it should be, with karaoke in Japanese!</div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href="">​</a></div> <div>Images: Johan Bodell, Helén Rosenfeldt and Mia Halleröd Palmgren</div> <div><br /></div> <h3 class="chalmersElement-H3">Read more: </h3> <div><div><a href="" style="outline:currentcolor none 0px"><img class="ms-asset-icon ms-rtePosition-4" src="" alt="" />The unique electron microscope that enables researchers to explore the world of individual atoms</a><br /></div> <div></div> <div>​<a href="/en/departments/physics/news/Pages/How-to-design-smart-materials-for-the-future.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to design smart materials for the future</a></div></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />33 million for unique microscopes</a><br /></div>Thu, 16 May 2019 00:00:00 +0200 progress 2019<p><b>​More than 20 Chalmers researchers working on lignocellulosic materials attended the Treesearch progress 2019 conference at Kolmården.</b></p><div>​The conference brought together about 200 academics and industry representatives to kick off the <a href="">Treesearch</a> ivitiative. The Chalmers contribution in presentations and posters, and not less in energy and excitement were apparent. The Chalmers delegation consisted of Wallenberg Wood Science Center, Treesearch affiliated researchers and <a href="/en/areas-of-advance/materials/Scientific%20initiatives/All-Wood-Composite-Platform/Pages/default.aspx">All Wood Composite platform</a> researchers, many of which are supported by the Chalmers Area of Advance - Materials Science.</div> <div><br /></div> <div><span>Stay tuned for the research to come!<br /></span></div> <a href=""><div><span><br /></span></div> <div>Follow All Wood Composite platform on Twitter</div></a><div><br /></div>Wed, 15 May 2019 00:00:00 +0200 Yasmine Sassa - new Assistant Professor<p><b>​Since April 1, 2019, Yasmine Sassa is an Assistant Professor working at the Condensed Matter Physics department at Chalmers. Here is an opportunity to get to know her a bit better.</b></p><div>Growing up in Paris, Yasmine developed an early interest for science. She had a natural talent for dismounting things to learn how they worked and was encouraged by her parents who brought her different science kits and often took her and her brother to interactive science museums in Paris. Her interest in science led her to an MSc degree in physics at the Pierre and Marie Curie University, Paris, in combination with an engineering degree. In the final year of her studies Yasmine went to Switzerland to do her master thesis at the Paul Scherrer Institute (PSI). There she got in contact with people who worked with synchrotron radiation and realized that she liked to work at large scale facilities. After a short time working at a company in Paris, Yasmine missed research and went back to Switzerland to start her PhD with her former thesis supervisor at PSI. After the PhD was completed Yasmine did a post-doc at ETH Zurich, after which she got Wenner-Gren funding for a second post-doc position in Uppsala, Sweden. Since April 1, Yasmine is an Assistant Professor in the Condensed Matter Physics group at Chalmers.</div> <div><br /></div> <strong>Could you briefly describe your research interests? </strong><br /><div>I am working in the field of condensed matter physics, looking at materials where you have strong interactions between the electrons and where the materials behave in unexpected ways. One example of this is superconductivity, where zero electrical resistance and expulsion of magnetic flux fields occur in certain materials (superconductors) when cooled below a characteristic critical temperature. We still do not fully understand the mechanism that drives materials to become superconductive. Currently, we need either very high pressures and/or low temperatures to reach these unconventional states and one major thing would be to develop, or improve materials so that they can function for use in everyday life. In general, I am interested in understanding such unconventional phenomena emerging from electron correlations.</div> <div><br /></div> <strong>What got you interested in this area?</strong><br /><div>Superconductivity is the topic that made me continue with this field as a student. It was actually an internship I did in my first year of master, about 3-4months. I worked in a lab, which collaborated with ESA, outside of Paris, and my project was to fabricate and characterize superconducting bolometer for microwave detection. My supervisor was very nice and very interested in the applications, but I realized that I was more interested in the fundamental questions. I wanted to understand the material more than what we could use it for.</div> <br /><div><strong>What do you like most about your job?</strong></div> <div>What I like most about my job is the opportunity to explore new things and new ideas, basically the freedom of exploring ideas and expanding knowledge in different ways. I also like that you can talk to your colleagues over coffee and learn something completely new from them. I also like big equipment, and I love doing experiments. I like collaborative work, trying to find solutions and answers. I also love teaching, I think it is very Inspirational to teach. It is one of the most rewarding things with my job actually, to see the students learn and understand something during the course and even get more interested in the topic. Some students have even finished PhDs in subjects that I thought and are now research colleagues instead of students.</div> <br /><strong>Why did you choose Chalmers?</strong><br />I have met people from Chalmers in meetings and at conferences. I talked to them and got interested in their work. I did some reading on the webpage and liked that Chalmers seemed to have a lot of collaborations with industry. I also think that Chalmers has a good international reputation. While being in France and Switzerland, I only knew two Swedish universities and one of them is Chalmers. Having been here for about a month now, I also appreciate how well things are handled administratively. I also find people being very welcoming, helpful and open-minded about new research directions.<div><br /></div> <strong>What is the best advice you have ever received?</strong><br /><div>It is a quote by Charles Kettering that my Senior Professor at ETH used to tell me. One day he printed it for me on a note which I have saved and brought with me everywhere. I actually have pinned it to the board over my desk here at Chalmers.  It says: “Focus on the future, as that is where we are going to be spending the rest of our lives.”</div> <br /><strong>What do you like to do when you are not working on research?</strong><br /><div>Actually, I really do like to think about science, even when I am not working. My work is my passion and I am lucky to be able to work with what I like. When I had the interview for the position I got the feeling that the HR representative found me a bit strange. I later found out that they made a comment about me saying “this girl just thinks about science”. But when I do not think about science I enjoy doing different sports. I particularly like swimming and cross-country skiing. I also like to watch movies in cinemas. And I also like animals a lot, all animals, but especially cats. If I had more time I would like to help out in cat shelters.</div> <div><br /></div> <div style="font-size:11px"><em>Photo: Mats Hulander</em></div> <span style="font-size:11px"> </span><div><span style="font-size:11px"><em>Text: Kristina Karlsson</em></span><br /></div>Thu, 09 May 2019 10:00:00 +0200's-Gustaf-Dalen-medal.aspx's-Gustaf-Dalen-medal.aspxProtein researcher gets this year&#39;s Gustaf Dalén medal<p><b>She has increased the knowledge of protein folding and misfolding, and how these contribute to diseases. She is also a role model and committed to gender equality. For this, Pernilla Wittung-Stafshede receives the Gustaf Dalén medal.</b></p><p>​“This feels great, and I am incredibly honored to get this attention from the Chalmers Alumni Association. Previous recipients of this medal are mostly older men, with successful business carriers; out of 51 medalists, only three are women. I hope the fact that I get this medal will motivate young women to study at Chalmers, and that it highlights academia as an exciting and extremely rewarding career path,” says Pernilla Wittung-Stafshede, the recipient of the Gustaf Dalén medal 2019, and continues:<br /><br />“Chalmers has shaped me, as I became an adult during my studies here. This was the best years of my life. I found “my thing” in research, and I made friends for life. I have also kept in touch with Chalmers even as I worked in the US for many years. I was head of US Friends of Chalmers for some time, and me and my husband arranged a spring meeting with party in New Orleans for the Chalmers Alumni Association’s US division.”<br /><br />Pernilla Wittung-Stafshede, who is a professor of chemical biology working at Chalmers’ Department of Biology and Biological Engineering, has received numerous awards over the past couple of years.<br /><br /><strong>You're an established researcher. Is it still important for you to win awards?</strong><br /><br />“Yes. I doubt my ability all the time, and awards are a way to help boost the self-confidence,” she says.<br /><br />Pernilla Wittung-Stafshede’s research focuses on proteins, that perform all the work in our bodies. The proteins have to fold correctly in order for them to fulfill their task. When they misfold, they malfunction – and this could result in diseases such as Parkinson’s or Alzheimer’s.<br /><br />Wittung-Stafshede has also taken an interest in metal ions, and the transport of such inside human cells. By building from basic knowledge concerning protein folding and metal dependent protein functions, it may be possible to understand the cause of diseases and lay the ground for future new treatments.<br /><br /><strong>What makes research so rewarding?</strong><br /><br />“It’s a thrill to discover completely new things, finding connections that no one has seen before. And I want to help humanity by understanding how the body works, as well as what goes wrong when you get sick.”<br /><br /><strong>You spend a lot of time working with gender equality issues, as Head of Chalmers gender equality initiative, Genie. Which of your tasks is most interesting?</strong><br /><br />“We have a lot of interesting things going on in the lab right now. We hope to close in on solutions to Parkinson’s and cancer in the coming years. Now with me focusing lots of attention on gender equality work, my students get more freedom to work independently,” Pernilla Wittung-Stafshede says.<br /><br />“Gender equality is such an important task, and it is very rewarding to learn how to work on a larger scale. There are so many new challenges. To get action, someone has to take the driver seat, and I'm now experienced enough to dare do that. I hope Genie can initiate lasting change at Chalmers.”<br /><br /><strong>In 25 years from now: What do you hope to see in your rearview mirror?</strong><br /><br />“I want to make a difference. When I look back, I want to feel pride in that I did all I could. I also hope that I have been a role model for younger people and given them courage to go far. It is important to remember that you do not have to be perfect. Nobody is! I have my shortcomings like everyone else.”<br /><br />The Gustaf Dalén medal will be given to Pernilla Wittung-Stafshede on the Chalmers Alumni Association’s spring meeting in Gothenburg, on May 11.<br /><br />Read the <a href="/sv/institutioner/bio/nyheter/Sidor/Pernilla-Wittung-Stafshede-arets-Gustaf-Dalen-medaljor.aspx">full motivation by the Alumni Association in Swedish here</a>.<br /></p> <p>Text: Mia Malmstedt<br />Photo: Oscar Mattsson</p>Thu, 02 May 2019 10:00:00 +0200 of Advance Award for exploring the structure of proteins<p><b>​This year&#39;s Areas of Advance Award is given for the development of a unique method of analysing the structure and chemical composition of proteins. Increasing our knowledge of proteins could yield many advances, including the development of new and more effective drugs.</b></p>​The Areas of Advance Award this year goes to Martin Andersson, Pernilla Wittung Stafshede and Fredrik Höök, who combined materials analysis with biology using a clear multidisciplinary approach.<br /><br />“It is very encouraging to have our work highlighted in this way,” says Martin Andersson, who first initiated the research project.<br /><br />He contacted Pernilla Wittung Stafshede and Fredrik Höök to combine research expertise from the three departments of Chemistry and Chemical Engineering, Biology and Biological Engineering and Physics. The aim of the project is to develop a unique method for studying proteins, and thereby open up new knowledge and greater understanding of their functions.<br /><br /><strong>High resolution analysis</strong><br />An important group of proteins, especially when it comes to development of pharmaceuticals, are those found in the membrane of cells. About 60 percent of all pharmaceuticals target membrane-bound proteins, directly or indirectly, which shows their great importance. <br /><br />However, due to these proteins’ need for the cell membrane environment, it is difficult to analyse their structure with established methods, such as X-ray crystallography, magnetic resonance imaging or cryo-electron microscopy.<br /><br />The current project makes use of Atom Probe Tomography instead, with which both the structure and chemical composition of proteins can be observed. The technology offers enormous precision. At present the researchers have shown that it is possible to determine the structure of individual proteins with approximately 1 nanometre resolution. However, the challenge lies in designing a sample preparation method that makes the process faster, and allows to focus on individual proteins, which is the focus of the collaboration.<br /><br />“We still have a lot to learn about proteins, such as those that contribute to ‘misfolding’ diseases like Parkinson's and Alzheimer's. The proteins involved here are very flexible and begin to clump together during illness, but we do not know why and how because they are difficult to study with other methods,” says Pernilla Wittung Stafshede.<br /><br /><strong>New use of an established method</strong><br />Atom Probe Tomography is a well-established technology, but it has mainly been used previously to characterise metals and other hard materials. Applying the method to biological materials, especially proteins, shows an innovative approach. The researchers have continued work to develop and adapt the sample preparation process.<br /><br />“Our project can be described as high-risk – we do not yet know if it will be successful. But if we do succeed, it could potentially be of huge benefit. Getting the Areas of Advance Award is a strong encouragement to continue,” says Fredrik Höök, Professor of Physics.<br /><br />The current project has been financed by the Materials Science Area of Advance.<br />“It is very valuable that Chalmers' Areas of Advance can offer support for early testing of our idea. We need to be able to show preliminary results in order to successfully seek funds from external donors,” says Martin Andersson.<br /><br />Now, the first scientific article has been accepted, and the three researchers hope to expand the project going forward. A first application was made a couple of years ago but was rejected.<br /><br />“But now we have shown that the method works! Sometimes one has to ignore some of the accepted expertise and go on intuition. And then you have to have the opportunity to experiment,” says Martin Andersson.<br /><br /><div><br /> </div> <div><em>Text: Malin Ulfvarson</em></div> <div><em>Photo: Johan Bodell</em></div> <div><br /> </div> <strong>The Areas of Advance Award</strong><br />With the Areas of Advance Award, Chalmers looks to reward those who have made outstanding contributions to cross-border collaborations and who, in the spirit of the Areas of Advance, integrate research, education and utilisation. The award will be given out during the Chalmers doctoral conferment ceremony on 18 May, 2019. <br /><br /><strong>Recipients</strong><br />The project is led by Martin Andersson, Professor at the Department of Chemistry and Chemical Engineering, in collaboration with Professor Pernilla Wittung Stafshede, Biology and Biological Engineering and Professor Fredrik Höök, Physics.<br /><br /><strong>Note</strong><br />Chalmers were international pioneers in the development of Atom Probe Tomography for hard materials, a technology initiated by Professor Hans-Olof Andrén during the 70s. The application of Atom Probe Tomography to study proteins began a few years ago at the Department of Chemistry and Chemical Engineering, by a project group consisting of Dr. Gustav Sundell, Dr. Mats Hulander and doctoral student Astrid Pihl, under the leadership of Professor Martin Andersson.<br /><br /><br /><br /><strong>Previously published news articles about the three prize winners:</strong><br /><br />Martin Andersson: <a href="/en/departments/chem/news/Pages/Skeletal-imitation.aspx">Skeletal imitation reveals how bones grow atom-by-atom</a> (Nov 2018)<br /><br />Pernilla Wittung Stafshede: <a href="/en/departments/bio/news/Pages/Eating-fish-could-prevent-Parkinsons-disease.aspx">Eating fish could prevent Parkinson's disease</a> (May 2018)<br /><br />Fredrik Höök: <a href="/en/departments/physics/news/Pages/75-MSEK-for-developing-target-seeking-biological-pharmaceuticals.aspx">75 MSEK for developing target seeking biological pharmaceuticals</a> (Feb 2017) <br />Tue, 30 Apr 2019 11:00:00 +0200 sponge paves the way for future batteries<p><b>​To meet the demands of an electric future, new battery technologies will be essential. One option is lithium sulphur batteries, which offer a theoretical energy density roughly five times that of lithium ion batteries. Researchers at Chalmers University of Technology, Sweden, recently unveiled a promising breakthrough for this type of battery, using a catholyte with the help of a graphene sponge. ​​​</b></p><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Graphene%20aerogel%20toppbild%202.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:181px;width:250px" /><div><span style="background-color:initial">The researchers’ novel idea is a porous, sponge-like aerogel, made of reduced graphene oxide, that acts as a free-standing electrode in the battery cell and allows for better and higher utilisation of sulphur. <br /></span><br /></div> <div>A traditional battery consists of four parts. First, there are two supporting electrodes coated with an active substance, which are known as an anode and a cathode. In between them is an electrolyte, generally a liquid, allowing ions to be transferred back and forth. The fourth component is a separator, which acts as a physical barrier, preventing contact between the two electrodes whilst still allowing the transfer of ions. <br /><br /></div> <div>The researchers previously experimented with combining the cathode and electrolyte into one liquid, a so-called ‘catholyte’. The concept can help save weight in the battery, as well as offer faster charging and better power capabilities. Now, with the development of the graphene aerogel, the concept has proved viable, offering some very promising results. <br /><br /></div> <div>Taking a standard coin cell battery case, the researchers first insert a thin layer of the porous graphene aerogel.</div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Carmen%20Cavallo.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:250px;height:218px" />“You take the aerogel, which is a long thin tube, and then you slice it – almost like a salami. You take that slice, and compress it, to fit into the battery,” says Carmen Cavallo of the Department of Physics at Chalmers, and lead researcher on the study. <br /><span style="background-color:initial">Then, a sulphur-rich solution – the catholyte – is added to the battery. The highly porous aerogel acts as the support, soaking </span><span style="background-color:initial">up the solution like a sponge. </span><br /></div> <div>“The porous structure of the graphene aerogel is key. It soaks up a high amount of the catholyte, giving you high enough sulphur loading to make the catholyte concept worthwhile. This kind of semi-liquid catholyte is really essential here. It allows the sulphur to cycle back and forth without any losses. It is not lost through dissolution – because it is already dissolved into the catholyte solution,” says Carmen Cavallo. <br /><br /></div> <div>Some of the catholyte solution is applied to the separator as well, in order for it to fulfil its electrolyte role. This also maximises the sulphur content of the battery. </div> <div>Most batteries currently in use, in everything from mobile phones to electric cars, are lithium-ion batteries. But this type of battery is nearing its limits, so new chemistries are becoming essential for applications with higher power requirements. Lithium sulphur batteries offer several advantages, including much higher energy density. The best lithium ion batteries currently on the market operate at about 300 watt-hours per kg, with a theoretical maximum of around 350. Lithium sulphur batteries meanwhile, have a theoretical energy density of around 1000 to 1500 watt-hours per kg. </div> <div><br /><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Aleksandar%20Matic.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:218px;width:250px" />“Furthermore, sulphur is cheap, highly abundant, and much more environmentally friendly. Lithium sulphur batteries also have the advantage of not needing to contain any environmentally harmful fluorine, as is commonly found in lithium ion batteries,” says Aleksandar Matic, Professor at Chalmers Department of Physics, who leads the research group behind the paper. <br /><br /></div> <div>The problem with lithium sulphur batteries so far has been their instability, and consequent low cycle life. Current versions degenerate fast and have a limited life span with an impractically low number of cycles. But in testing of their new prototype, the Chalmers researchers demonstrated an 85% capacity retention after 350 cycles. <br /><br /></div> <div>The new design avoids the two main problems with degradation of lithium sulphur batteries – one, that the sulphur dissolves into the electrolyte and is lost, and two, a ‘shuttling effect’, whereby sulphur molecules migrate from the cathode to the anode. In this design, these undesirable issues can be drastically reduced. </div> <div><br /></div> <div><span style="background-color:initial">The researchers note, however, that there is still a long journey to go before the technology can achieve full market potential. <br />&quot;Since these batteries are produced in an alternative way from most normal batteries, new manufacturing processes will need to be developed to make them commercially viable,&quot; says Aleksandar Matic.<br /></span><br /></div> <div><span style="background-color:initial">Text: Joshua Worth,<a href=""></a></span></div> <div><span style="background-color:initial">Images: Johan Bodell, <a href="​"></a></span></div> <div><span style="background-color:initial"><br /></span></div> <div>Read the article,<a href=""> “A free-standing reduced graphene oxide aerogel as supporting electrode in a fluorine-free Li2S8 catholyte Li-S battery,”</a> published in the Journal of Power Sources. ​<span style="background-color:initial"><br /></span></div> <div><h3 class="chalmersElement-H3" style="font-family:&quot;open sans&quot;, sans-serif"><img src="/SiteCollectionImages/Institutioner/F/750x340/Graphene%20Aerogel%20Toppbild.jpg" alt="" style="font-size:14px;font-weight:300;margin:5px" />​​​​<span style="background-color:initial;color:rgb(51, 51, 51);font-family:&quot;open sans&quot;, sans-serif;font-size:14px;font-weight:300">The reduced graphene oxide aerogel developed by the researchers, that makes the catholyte concept viable.</span></h3></div> <div>​<br /><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">M</span><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">ore about the Chalmers lab used in this research </span></div> <div>The researchers investigated the structure of the graphene aerogel at the <a href="/en/researchinfrastructure/CMAL/Pages/default.aspx">Chalmers Materials Analysis Laboratory (CMAL)​</a>. CMAL has advanced instruments for material research. The laboratory formally belongs to the Department of Physics, but is open to all researchers from universities, institutes and industry. The experiments in this study have been carried out using advanced and high-resolution electron microscopes.</div> <div>Major investments, totalling around 66 million Swedish kronor have recently been made to further push CMAL to the forefront of material research.</div> <div>The investments included the purchase of a monochromated and double aberration corrected (CETCOR image and ASCOR probe Cs-correctors) TEM JEOLARM (200 kV) 40-200, equipped with a field emission gun (FEG). This was the first paper to be published with the use of this brand-new microscope, which was used to investigate the structure of the aerogel. <br /><br /></div> <div><a href="/en/departments/physics/news/Pages/Come-and-experience-Chalmers’-unique-electron-microscope.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />The new electron microscope, which weighs as much as a full grown elephant, will be formally inaugurated on 15 May in a ceremony at Chalmers. </a></div> <div>The Knut and Alice Wallenberg Foundation has contributed around half of the investments.</div> <div><br /></div> <div><span style="color:rgb(33, 33, 33);font-family:inherit;font-size:16px;font-weight:600;background-color:initial">For more information, contact:</span><br /></div> <div><strong><a href="/en/Staff/Pages/Carmen-Cavallo.aspx">Carmen Cavallo</a></strong>, <span style="background-color:initial">Researcher, Department of Physics, Chalmers University of Technology, </span><span style="background-color:initial">+46 31 772 33 10, </span><span style="background-color:initial"><a href="">​</a></span></div> <div><br /></div> <div><strong><a href="/en/staff/Pages/Aleksandar-Matic.aspx">Aleksandar Matic​</a></strong>, P<span style="background-color:initial">rofessor, Department of Physics, Chalmers University of Technology, </span><span style="background-color:initial">+46 31 772 51 76, </span><span style="background-color:initial"><a href=""> </a></span></div>Mon, 29 Apr 2019 07:00:00 +0200’-unique-electron-microscope.aspx and experience Chalmers’ unique electron microscope<p><b>​It is the only one of its kind in the world, it weighs about the same as a full-grown bull elephant and it allows us to explore the world of individual atoms.Chalmers&#39; new electron microscope enables researchers to study and design the smart materials of the future – and on the 15 May it is time for the great unveiling.​</b></p><div><span style="background-color:initial">The event will be open to both r</span><span style="background-color:initial">esearchers and members of the public who want to learn more about the new microscope and the opportunities it will create. Researchers from near and far will come to get acquainted with the advanced equipment and make new connections. Special invitees include members of a European network for electron microscopy, in which Chalmers is involved. There are also several leading researchers in the field from Europe and the rest of the world.<br /></span><br /></div> <div>But first, let us rewind a little – to a snowy day in February 2018, when a truck, loaded with 100 boxes, arrived at Chalmers campus Johanneberg. Eager researchers watched as the precious, long-awaited packages were loosened. There were worries that the lift might not even be able to cope with the weight, but it managed. Almost a year of assembly, installation and adjustment followed, and now the microscope, which weighs five tonnes, is in place at Chalmers Material Analysis Laboratory (CMAL). It sits in a disturbance-protected room with adapted temperature and air conditions and is available to researchers in both the academy and industry.<br /><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/IMG_1755EvaOlsson_01_350x.jpg" class="chalmersPosition-FloatRight" alt="" style="background-color:initial" />“It is great that we can now start all the experiments we have planned – we have a long wish list. When we can study and control different materials, right down to the atomic level, a whole universe of possibilities opens. For example, we can produce more healthy foods, smarter solar cells and more environmentally-friendly textiles and paper,” says Physics Professor Eva Olsson, who is responsible for the microscope project at Chalmers.<br /><br /></div> <div>She has worked hard for Chalmers to be able to buy a total of three advanced electron microscopes that open up new possibilities in soft microscopy. What is now being inaugurated is a transmission electron microscope (TEM) made in Japan by JEOL, by far the standout of the three. The total investment is around 66 million Swedish kronor, of which the Knut and Alice Wallenberg Foundation has contributed half.</div> <div>What is unique about the new, large TEM is its very high spatial and energy resolution. It means it is possible to see how individual atoms are arranged in a material. Through analysis of the different signals coming from the studied materials, it is possible to understand how the arrangement of atoms is correlated to the properties of the material.<br /><br /></div> <div>Although the new microscope has not been formally opened yet, it has already been put to use in certain ways. Professor of physics Aleksandar Matic, and researcher Carmen Cavallo, published an article on how they managed to produce a cathode material for lithium sulphur batteries, based on graphene, allowing for higher energy content and longer lifespan. They investigated the structure of the cathode material using the new microscope. Meanwhile, Eva Olsson's research group has also developed the knowledge about how to make solar cell nanowires more efficient. And with the help of one of the new microscopes, researchers also managed to show that it is possible to melt gold at room temperature.<br /><br /></div> <div>In the future, the microscope will pave the way for new results about a wide spectrum of materials ranging from  food, materials for health and energy to atomically-thin materials, catalysts and quantum computers. The microscope is beneficial for many different research groups at Chalmers, and externally.</div> <div>“When we can optimise different materials so that they behave exactly as we want them to, in as small a size as possible, we can make important progress. This is true for both material science and technology development. In this work we can also contribute to better health and a sustainable environment,” says Eva Olsson. </div> <div><br /></div> <div>Eva Olsson will lead the opening ceremony, but she can also reveal that even Chalmers' founder, William Chalmers, seems to have gained a new lease of life thanks to the excitement of the new microscope. It might just be the case that he too will be on hand to help moderate the ceremony, which will include exciting lectures, insight into the world of the microscope and many opportunities for networking and meeting future contacts.<br /><br /></div> <div>Text: Mia Halleröd Palmgren and Joshua Worth<br /><br /></div> <h3 class="chalmersElement-H3"><a href="/en/departments/physics/calendar/Pages/Inauguration_electronmicroscope_190515.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the opening ceremony and register here​</a></h3> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/Bildcollage_750x230webbkalnedern.jpg" alt="collage" /><br /></div> <div><br /></div> <h3 class="chalmersElement-H3">More about electron microscopy and soft microscopy </h3> <div><span style="background-color:initial">Electron microscopy is a collective term for various types of microscopy using electrons instead of electromagnetic radiation to produce images of very small objects. With the help of this technique, one can pass the resolution of visible light, which makes it possible to study individual atoms.</span><br /></div> <div>With soft microscopy, the electrons that examine the material have lower energy than in an ordinary electron microscope. It makes it possible to explore delicate organic materials such as foods, textiles or tissues, right down to the atomic level, without the material losing its structure.</div> <div>There are different types of electron microscopes, such as transmission electron microscopes (TEM), scanning transmission electron microscopes (STEM), scanning electron microscopes (SEM) and combined Focused Ion Beam and SEM (FIB-SEM).</div> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />33 million for unique microscopes</a></div> <div><a href="/en/departments/physics/news/Pages/How-to-design-smart-materials-for-the-future.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to design smart materials for the future</a></div> <div><a href="/en/departments/physics/news/Pages/Fine-tuning-at-the-atomic-level-can-result-in-better-catalysts-and-a-cleaner-environment.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Better catalysts with the help of minimal atomic adjustments </a></div> <div><a href="/en/departments/physics/news/Pages/How-gold-can-melt-at-room-temperature-.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />How to melt gold at room temperature</a></div>Thu, 25 Apr 2019 00:00:00 +0200 materials with ultrafast connections<p><b>Through magic twist angles and unique energy states, it is possible to design tailor-made, atomically thin materials that could be invaluable for future electronics. Now, researchers at Chalmers University of Technology, Sweden, and Regensburg University in Germany have shed light on the ultrafast dynamics in these novel materials. The results were recently published in the prestigious journal Nature Materials.​​​</b></p><div><div>Imagine you are building an energy-efficient and super-thin solar cell. You have one material that conducts current and another that absorbs light. You must therefore use both materials to achieve the desired properties, and the result may not be as thin as you hoped.</div> <div><br /></div> <div>Now imagine instead that you have atomically thin layers of each material, that you place on top of each other. You twist one layer towards the other a certain amount, and suddenly a new connection is formed, with special energy states – known as interlayer excitons – that exist in both layers. You now have your desired material at an atomically thin level.</div> <div><br /></div> <div>Ermin Malic, researcher at Chalmers University of Technology, in collaboration with German research colleagues around Rupert Huber at Regensburg University, has now succeeded in showing how fast these states are formed and how they can be tuned through twisting angles. Stacking and twisting atomically thin materials like Lego bricks, into new materials known as ‘heterostructures’, is an area of research that is still at its beginning.</div></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/ErminMalic_190415_05_350xwebb.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px" /><div>“These heterostructures have tremendous potential, as we can design tailor-made materials. The technology could be used in solar cells, flexible electronics, and even possibly in quantum computers in the future,” says Ermin Malic, Professor at the Department of Physics at Chalmers.</div> <div><br /></div> <div>Ermin Malic and his doctoral students Simon Ovesen and Samuel Brem recently collaborated with researchers at Regensburg University. The Swedish group has been responsible for the theoretical part of the project, while the German researchers conducted the experiments. For the first time, with the help of unique methods, they succeeded in revealing the secrets behind the ultrafast formation and dynamics of interlayer excitons in heterostructure materials. They used two different lasers to follow the sequence of events. By twisting atomically thin materials towards each other, they have demonstrated that it is possible to control how quickly the exciton dynamics occurs.</div> <div><br /></div> <div>“This emerging field of research is equally fascinating and interesting for academia as it is for industry,” says Ermin Malic. He leads the Chalmers Graphene Centre, which gathers research, education and innovation around graphene, other atomically thin materials and heterostructures under one common umbrella.</div> <div><br /></div> <div>These kinds of promising materials are known as two-dimensional (2D) materials, as they only consist of an atomically thin layer. Due to their remarkable properties, they are considered to have great potential in various fields of technology. Graphene, consisting of a single layer of carbon atoms, is the best-known example. It is starting to be applied in industry, for example in super-fast and highly sensitive detectors, flexible electronic devices and multifunctional materials in  automotive, aerospace and packaging industries.</div> <div><br /></div> <div>But graphene is just one of many 2D materials that could be of great benefit to our society. There is currently a lot of discussion about heterostructures consisting of graphene combined with other 2D materials. In just a short time, research on heterostructures has made great advances, and the journal Nature has recently published several breakthrough articles in this field of research. </div> <div><br /></div> <div>At Chalmers, several research groups are working at the forefront of graphene. The Graphene Centre is now investing in new infrastructure in order to be able to broaden the research area to include other 2D materials and heterostructures as well.</div> <div><br /></div> <div>“We want to establish a strong and dynamic hub for 2D materials here at Chalmers, so that we can build bridges to industry and ensure that our knowledge will benefit society,” says Ermin Malic.</div></div> <div>​<br /></div> <div></div> <div><span style="background-color:initial">Text and image: Mia Halleröd Palmgren, </span><a href=""></a><br /></div> <div>Translation to English: Joshua Worth,<a href=""></a></div> <div><br /></div> <div>Read the scientific paper <span style="background-color:initial"><a href="">Ultrafast transition between exciton phases in van der Waals heterostructures</a> </span><span style="background-color:initial">in Nature Materials.</span></div> <div><span style="background-color:initial"><br /></span></div> <div><div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the press release from Regensburg University, Germany. </a></div> <div><br /></div> <div><a href="/sv/centrum/graphene/Sidor/default.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Read more about the Graphene Centre at Chalmers (GCC)</a></div> <span style="background-color:initial"></span></div> <div><br /></div> <h3 class="chalmersElement-H3">For more information: </h3> <div><a href="/sv/personal/Sidor/ermin-malic.aspx">Ermin Malic,​</a> Professor, Department of Physics and Director of the Graphene Centre, Chalmers University of Technology, Sweden, +46 31 772 32 63, +46 70 840 49 53, <a href="">​</a></div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/SamuelBremErminMalic_20190415_bannerwebb.jpg" alt="" style="margin:5px" /><br />Professor Ermin Malic (to the right) and his doctoral students Samuel Brem (left) and <span style="background-color:initial">Simon Ovesen (not pictured) r</span><span style="background-color:initial">ecently collaborated with researchers at Regensburg University. The Swedish group has been responsible for the theoretical part of the project, while the German researchers conducted the experiments.</span><span style="background-color:initial"> </span><span style="background-color:initial">​</span></div> <span></span><div><span style="background-color:initial"></span></div>Wed, 17 Apr 2019 07:00:00 +0200;s fastest hydrogen sensor could pave the way for clean energy<p><b>Hydrogen is a clean and renewable energy carrier that can power vehicles, with water as the only emission. Unfortunately, hydrogen gas is highly flammable when mixed with air, so very efficient and effective sensors are needed. Now, researchers from Chalmers University of Technology, Sweden, present the first hydrogen sensors ever to meet the future performance targets for use in hydrogen powered vehicles.</b></p><div><p class="chalmersElement-P">​<span style="background-color:initial">The researchers’ ground-breaking results were recently <a href="">published in the prestigious scientific journal Nature Materials.​</a> The discovery is an optical nanosensor encapsulated in a plastic material. The sensor works based on an optical phenomenon – a plasmon – which occurs when metal nanoparticles are illuminated and capture visible light. The sensor simply changes colour when the amount of hydrogen in the environment changes.</span></p> <p class="chalmersElement-P">The plastic around the tiny sensor is not just for protection, but functions as a key component. It increases the sensor’s response time by accelerating the uptake of the hydrogen gas molecules into the metal particles where they can be detected. At the same time, the plastic acts as an effective barrier to the environment, preventing any other molecules from entering and deactivating the sensor. The sensor can therefore work both highly efficiently and undisturbed, enabling it to meet the rigorous demands of the automotive industry – to be capable of detecting 0.1 percent hydrogen in the air in less than a second.</p> <img src="/SiteCollectionImages/Institutioner/F/350x305/Ferry_portratt_350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:216px;width:250px" /><p class="chalmersElement-P">“We have not only developed the world's fastest hydrogen sensor, but also a sensor that is stable over time and does not deactivate. Unlike today's hydrogen sensors, our solution does not need to be recalibrated as often, as it is protected by the plastic,” says Ferry Nugroho, a researcher at the Department of Physics at Chalmers.</p> <p class="chalmersElement-P">It was during his time as a PhD student that Ferry Nugroho and his supervisor Christoph Langhammer realised that they were on to something big. After reading a scientific article stating that no one had yet succeeded in achieving the strict response time requirements imposed on hydrogen sensors for future hydrogen cars, they tested their own sensor. They realised that they were only one second from the target – without even trying to optimise it. The plastic, originally intended primarily as a barrier, did the job better than they could have imagined, by also making the sensor faster. The discovery led to an intense period of experimental and theoretical work.</p> <p class="chalmersElement-P">“In that situation, there was no stopping us. We wanted to find the ultimate combination of nanoparticles and plastic, understand how they worked together and what made it so fast. Our hard work yielded results. Within just a few months, we achieved the required response time as well as the basic theoretical understanding of what facilitates it,” says Ferry Nugroho.</p> <p class="chalmersElement-P">Detecting hydrogen is challenging in many ways. The gas is invisible and odourless, but volatile and extremely flammable. It requires only four percent hydrogen in the air to produce oxyhydrogen gas, sometimes known as knallgas, which ignites at the smallest spark. In order for hydrogen cars and the associated infrastructure of the future to be sufficiently safe, it must therefore be possible to detect extremely small amounts of hydrogen in the air. The sensors need to be quick enough that leaks can be rapidly detected before a fire occurs.</p> <img src="/SiteCollectionImages/Institutioner/F/350x305/ChristophLanghammerfarg350x305.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;height:216px;width:250px" /><p class="chalmersElement-P">​“It feels great to be presenting a sensor that can hopefully be a part of a major breakthrough for hydrogen-powered vehicles. The interest we see in the fuel cell industry is inspiring,” says Christoph Langhammer, Professor at Chalmers Department of Physics.</p> <p class="chalmersElement-P">Although the aim is primarily to use hydrogen as an energy carrier, the sensor also presents other possibilities. Highly efficient hydrogen sensors are needed in the electricity network industry, the chemical and nuclear power industry, and can also help improve medical diagnostics.</p> <p class="chalmersElement-P">“The amount of hydrogen gas in our breath can provide answers to, for example, inflammations and food intolerances. We hope that our results can be used on a broad front. This is so much more than a scientific publication,” says Christoph Langhammer.</p> <p class="chalmersElement-P">In the long run, the hope is that the sensor can be manufactured in series in an efficient manner, for example using 3D printer technology.<br /><br /></p> <div><strong>Text: </strong><span style="background-color:initial">Mia Halleröd Palmgren,</span><span style="background-color:initial"> </span><a href=""></a> and <span style="background-color:initial">Joshua Worth,</span><a href=""></a><span style="background-color:initial">​ </span></div> <div><strong>Image</strong> of C<span style="background-color:initial">hristoph</span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"></span><span style="background-color:initial"> Langhammer: Henrik Sandsjö</span><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"><strong>Illustration</strong> of the sensor technique: </span><span style="background-color:initial">Ella Marushchenko<br /></span><span style="background-color:initial">Images of Ferry Nugroho, the sensor and the group picture: Mia Halleröd Palmgren​</span></div></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/Vatgassensor_750x340.jpg" alt="" style="color:rgb(33, 33, 33);font-family:&quot;open sans&quot;, sans-serif;font-size:24px;background-color:initial;margin:5px" /> ​</div> <h4 class="chalmersElement-H4"><span>Facts: The world's fastest hydrogen sensor​</span><span>​</span></h4> <div><span style="color:rgb(33, 33, 33);font-family:&quot;open sans&quot;, sans-serif;background-color:initial"><br /></span></div> <div><ul><li><img src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/vätgassensor_amerikansk_illu350x460.jpg" class="chalmersPosition-FloatRight" alt="" style="margin:5px;width:250px;height:324px" /><span style="background-color:initial">The Chalmers-developed sensor is based on an optical phenomenon – a plasmon – which occurs when metal nanoparticles are illuminated and capture light of a certain wavelength.</span></li> <li><span style="background-color:initial"></span>The optical nanosensor contains millions of metal nanoparticles of a palladium-gold alloy, a material which is known for its sponge-like ability to absorb large amounts of hydrogen. The plasmon phenomenon then causes the sensor to change colour when the amount of hydrogen in the environment changes.</li> <li>The plastic around the sensor is not only a protection, but also increases the sensor’s response time by facilitating hydrogen molecules to penetrate the metal particles more quickly and thus be detected more rapidly. At the same time, the plastic acts as an effective barrier to the environment because no other molecules than hydrogen can reach the nanoparticles, which prevents deactivation.</li> <li>The efficiency of the sensor means that it can meet the strict performance targets set by the automotive industry for application in hydrogen vehicles of the future by being capable of detecting 0.1 percent hydrogen in the air in less than one second.</li> <li>The research was funded by the Swedish Foundation for Strategic Research, within the framework of the Plastic Plasmonics project.​<br /><br /></li></ul> <div><div></div></div></div> <div> </div> <h4 class="chalmersElement-H4">About the scientific article: </h4> <div> </div> <div><span style="background-color:initial">The article</span><span style="background-color:initial"> </span><a href="">”Metal – Polymer Hybrid Nanomaterials for Plasmonic Ultrafast Detection” ​</a><span style="background-color:initial">has been published in Nature Materials and is written by Chalmers researchers Ferry Nugroho, Iwan Darmadi, Lucy Cusinato, Anders Hellman, Vladimir P. Zhdanov and Christoph Langhammer. The results have been developed in collaboration with Delft Technical University in the Netherlands, the Technical University of Denmark and the University of Warsaw, Poland.</span><span style="background-color:initial">​</span></div> <div> </div> <div><br /></div> <div> </div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/Vatgassensor_forskarnabakom_20190404_750x340.jpg" alt="" style="margin:5px" /><br /> <span style="background-color:initial">Chalmers researchers</span><span style="background-color:initial"> ​</span><span style="background-color:initial">F</span><span style="background-color:initial">erry Nugroho, Iwan Darmadi, Christoph Langhammer, Lucy Cusinato och Anders Hellman. </span></div> <span></span><div></div> <div> </div> <div><br /></div> <div> </div> <div><h4 class="chalmersElement-H4" style="font-family:&quot;open sans&quot;, sans-serif">For more information:​</h4> <div><a href="/en/Staff/Pages/Ferry-Anggoro-Ardy-Nugroho.aspx">Ferry Nugroho</a>, <span></span>Researcher, Department of Physics, Chalmers University of Technology, +46 31 772 54 21, <a href=""></a><br /><br /></div> <div><a href="/en/staff/Pages/Christoph-Langhammer.aspx">Christoph Langhammer</a>, Professor, Department of Physics, Chalmers University of Technology, +46 31 772 33 31, ​ <a href=""></a></div></div>Thu, 11 Apr 2019 07:00:00 +0200 equality representative at MC2<p><b>​Per Rudquist, associate professor at the Electronics Materials and Systems Laboratory, and head of undergraduate education, has been appointed as equality representative at MC2. &quot;Specifically, of course, I want no employees to feel that there is discrimination or that there is inequality in any form&quot;, he says.</b></p><div><h5 class="chalmersElement-H5"><span>Congratulations to your new assignment, Per! How does it feel?</span></h5></div> <div>&quot;It feels good while I sense that I have not really started the practical work yet. Being an equality representative is a mission of trust that also entails employer responsibility. It is therefore important to know and be able to clarify what my role is in different situations&quot;, he says.</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/MC2/News/prudquist_IMG_6714_350x305.gif" class="chalmersPosition-FloatRight" alt="Picture of Per Rudquist." style="margin:5px" />Per Rudquist is a Master of Science in Physics Engineering with a degree from Chalmers in 1992. Immediately after his degree he began doctoral studies in liquid crystals, and defended his PhD in 1997. In 2001 he became associate professor at Chalmers, in 2004 he became a senior lecturer, and today he is working at the Electronics Materials and Systems Laboratory (EMSL). In 2018 he was appointed as head of undergraduate education at MC2.</div> <div>&quot;I have also been several times working at the University of Colorado, in Boulder, USA&quot;, Per tells.</div> <div><br /></div> <div>He was appointed as equality representative on 1 January and will serve until at least 31 December 2021. </div> <h5 class="chalmersElement-H5">Do you have any specific thoughts about what you want to achieve?</h5> <div>&quot;Specifically, of course, I want no employees to feel that there is discrimination or that there is inequality in any form, regardless which part of the department we consider. We have several different categories of employees at the department and the gender distribution is very different in different groups. A basic rule when it comes to gender equality, I think, is that 'nobody should be prevented, forced, or expected to do anything because of their gender affiliation'&quot;, Per Rudquist says.</div> <div><br /></div> <div>He also wants to work with the workplace culture at MC2, about raising awareness of how we unconsciously and consciously express ourselves and treat each other. The gender gap in research and technology is another area that engages the new equality representative:</div> <div>&quot;I've been thinking about the causes for a long time and reacting in particular to the fact that we often use statistics to assign individuals certain properties. We are already starting when the children are small and it continues up into adulthood. If I, in my role as equality representative, could contribute to a change even on this plan, it would feel good&quot;, Per Rudquist says.</div> <div><br /></div> <div>As equality representative, Per Rudquist works for equality and should primarily work proactively and not administratively or investigative. He succeeds Cristina Andersson who previously had the same role.</div> <div><br /></div> <div>Per Rudquist lives in Mölnlycke with his wife Elisabeth and their two kids, aged six and eight.</div> <div>&quot;Yes, the schedule is filled up even outside of work! My own main hobbies - the music and the sport - have to stand back yet a while for everyday life to work&quot;, Per smiles.</div> <div><br /></div> <div>Text and photo: Michael Nystås</div> <div><br /></div> <h5 class="chalmersElement-H5">Do you want to get in touch with Per Rudquist?</h5> <div><a href=""></a>, ext. 3389</div> <div><br /></div> <div><a href="/insidan/EN/about-chalmers/equality/something-happened/equality-representatives">Read more about the equality representatives at Chalmers</a> &gt;&gt;&gt;</div>Mon, 08 Apr 2019 10:00:00 +0200 Tomoko M. Nakanishi Honorary Doctor at Chalmers 2019<p><b>Tomoko M Nakanishi is awarded honorary doctorate at Chalmers 2019. She is recognised for her interdisciplinary research on plant physiology, and developing pioneering new imaging methods. Tomoko M. Nakanishi is a professor at the Graduate School of Agricultural and Life Sciences, Laboratory of Radio-Plant Physiology, The University of Tokyo, Japan.</b></p><div><span style="background-color:initial"><strong><br /></strong></span></div> <strong> </strong><span style="background-color:initial"><strong>Tell us a little about your collaboration with Swedish scientists regarding radiation research.</strong></span><div><br /></div> <div>Since there are superb scientists in nuclear physics, nuclear techniques, and chemistry in Chalmers University of Technology, I got so many important comments an d suggestions from them on my studies, since I began to use neutron beams, about 20 years ago. And then, especially after the Fukushima nuclear accident, we challenged to perform collaborative research and education for radio-ecology.</div> <div><br /></div> <div><strong>What would you say is the biggest challenge where radiation studies might hold an answer right now?</strong></div> <div><br /></div> <div>Radiation is an indispensable tool and cannot be replaced with any other means. It opens new fields in studies and in industries. The field of application and the market size is steadily increasing in the society now but how to communicate or convince the preference and importance of radiation usage to the public people is the largest problem and it is the challenge for both researchers and the industry people. But we are gradually making progress though showing the marvelous research results using radiation.</div> <div><br /></div> <div><strong>You have been active in increasing the public knowledge in Japan about the impact and risks of radiation, not least in connection to the Fukushima-accident. Can you tell us about your experience from this work?</strong></div> <div><br /></div> <div>Many people are afraid of radiation because it is invisible. However, using radiation we could visualize images which we usually cannot see. For example, using a neutron beam, I could present water specific image of living plants, even the roots embedded in soil, too. When 137Cs is applied to water culture solution with soil, Cs is firmly adsorbed in soil and the plants cannot absorb 137Cs. To visualize the risk of plant contamination is an easy method to understand the situation and provides relief to the people. The water images of flowers are especially beautiful and give a strong impact and favorable impression of neutron beam usage to many people.</div> <div><br /></div> <div><strong>You have visited us a couple of times and also hosted Chalmers researchers. Could you share some thoughts about our radiation research? Where are we strong and where must we improve?</strong></div> <div><br /></div> <div>There are two points. One is the necessity of a long-range study for radioecology, and the other one is more utilization of radiation and radioisotopes is recommended, which will surely lead to innovation of the research. The former one means, one of the main targeted radionuclide, Cs-137, in radioecology has a very long half-life, 30 years. We should continue this study to understand the effect of a possible nuclear accident in future generations. The latter means, there are not so many well-developed studies, which make most of the radiation or radioisotopes. For example, in the biological field, fluorescent imaging is now overwhelming and many new findings are reported. But imaging under light conditions is not possible and numerical treatment of the image is very difficult in fluorescent imaging. So both fluorescent and radiation imaging should be developed further.</div> <div><br /></div> <div><strong>Will you visit Chalmers in a near future?</strong></div> <div><br /></div> <div>Of course, I will surely visit Chalmers again. But right now, since I got a new job as a president of another University in Tokyo from this spring, I cannot decide the date right now. But when I will know about the situation in my new office, I would like to visit Chalmers. In my capacity as a foreign member of IVA, I also plan to attend the Annual Gathering in October, especially that this year is the 100th anniversary of the foundation of IVA.</div> <div><br /></div> <div>Text: Mats Tiborn</div>Thu, 28 Mar 2019 00:00:00 +0100 Professor chosen to be Wallenberg Scholars<p><b>​Chalmers Professor Fredrik Höök is one of 22 prominent researchers in Sweden to receive SEK 18 million from the Wallenberg Foundations in the form of a five-year grant for free research.​​​</b></p>​<span></span><span style="background-color:initial">“</span><img src="/SiteCollectionImages/Centrum/Fysikcentrum/News/Fredrik-Hook_400x550px.jpg" class="chalmersPosition-FloatRight" alt="" /><span style="background-color:initial">It is amazing to get this chance and I feel deeply honoured. Now, I will carefully consider how to make the best out of this opportunity and the responsibility that comes with this privilege, ”says Fredrik Höök, Professor at the Department of Physics at Chalmers.</span><div><br /></div> <div>Wallenberg Scholars is a program designed to support and encourage some of the most successful researchers at Swedish universities. The aim is for the researchers to be able to adopt a long-term approach to their work, with less time and effort expended on seeking external funding, and with higher ambitions, so that their research has an even greater international impact. The grants also enable researchers to commit to more challenging and longer-term projects. </div> <div><h5 class="chalmersElement-H5" style="font-family:&quot;open sans&quot;, sans-serif">Studying cell communication</h5></div> <div><span style="background-color:initial">Fredrik Höök is conducting research within biological physics and he is the academic leader of the industrial research centre Formulaex. The project focuses on encapsulating biological pharmaceuticals into nanoscale carriers in order to reach the body’s cells and treat severe diseases.</span><br /></div> <div><br /></div> <div>In his research, Fredrik Höök is studying how biological cells communicate with each other. Cell membranes play a key role in many biological processes and diseases. The membrane is essential for the cell’s ability to communicate with its surroundings. Sometimes particles of membrane can detach to form “communication capsules”, (microvesicles), which transport substances to other cells. Fredrik Höök and his colleagues intend to develop new methods for studying the microvesicles, and to try to make copies of them.  </div> <div><br /></div> <div>In recent years studies of cell membranes have yielded a wealth of new knowledge about various biological processes. Those studies have been made possible by increasingly sensitive measuring instruments. </div> <div><br /></div> <div>“Now, we want to develop new methods for microscoping and handling small quantities of liquid. One of their main aims is to analyze the microvesicles – exosomes – used by cells to communicate with each other,” says Fredrik Höök. </div> <div><br /></div> <div>To make maximum use of the sensitive measuring methods, the researchers have designed structures that behave in the same way as cell membranes. This enables them to biophysically study how cell membranes interact with nanoparticles of various kinds, such as viruses and exosomes.</div> <div><br /></div> <div>Fredrik Höök’s research group uses artificial cell membranes to carry out in-depth studies of individual nanoparticles that have been attached to the membrane. The researchers also intend to develop a bioanalytical tool capable of measuring the size, structure, and optical properties of individual particles. This will enable the research team to make detailed analyses of complex biological samples, and they also hope to be able to sort nanoparticles according to their properties.</div> <div><h5 class="chalmersElement-H5"><span>I</span><span>nspiring new ways of developing and administering medication</span></h5></div> <div>​<span style="background-color:initial">The aim is to better understand how the nanoparticles work, and what enables them to penetrate the cell. Höök wants to use that knowledge to design artificial exosomes.</span></div> <div><br /></div> <div>“Hopefully, this could lead to improved disease diagnostics and inspire new ways of developing and administering medication. Findings from the research may also answer fundamental questions about the properties of nanoparticles. This may be of benefit in the field of nanosafety, and in many other areas,” says Fredrik Höök. </div> <div><br /></div> <div>Text: Mia Halleröd Palmgren, <a href=""> </a></div> <div>Photo: Henrik Sandsjö</div> <div>Illustration: Yen Strandqvist</div> <div><br /></div> <div><img src="/SiteCollectionImages/Institutioner/F/750x340/Stressade%20jastceller_illustration_webb_banner.jpg" alt="Metod för att analysera jästcellers stressreaktioner" /><br /></div> <div><br /></div> <h4 class="chalmersElement-H4">Press releases and articles about <a href="/en/Staff/Pages/Fredrik-Höök.aspx">Fredrik Höök </a> and his research</h4> <div><a href="/en/departments/physics/news/Pages/Investigating-cell-stress-for-better-health-–-and-better-beer.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Investigating cell stress for better health – and better beer </a></div> <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="" />75 MSEK for developing target seeking biological pharmaceuticals </a></div> <div><a href="/en/departments/physics/news/Pages/A-Chalmers-innovation-paves-the-way-for-the-next-generation-of-pharmaceuticals.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Chalmers paves the way for the future of designed pharmaceuticals </a></div> <div><span></span><a href="/en/centres/gpc/news/Pages/Portrait-Fredrik-Hook.aspx"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/ichtm.gif" alt="" />Portrait: A matter of life and Science </a></div> <div><br /></div> <div><span></span><h4 class="chalmersElement-H4" style="font-family:&quot;open sans&quot;, sans-serif">Wallenberg Scholars and granted researchers at Chalmers</h4> <div>The Knut and Alice Wallenberg Foundation awards grants to Wallenberg Scholars in the fields of medicine, science and technology. Following this year’s grant awards, there are 63 active Wallenberg Scholars. The next cohort of Wallenberg Scholars will be chosen in 2021.</div> <div><br /></div> <div>There are already three active Wallenberg Scholars at Chalmers: </div> <div>Professor <span style="font-weight:700">Mikael Käll </span>at the Department of Physics,</div> <div>Professor <span style="font-weight:700">Jens Nielsen </span><span style="background-color:initial">at the Department of Biology and Biological Engineering  </span></div> <div><span style="background-color:initial"></span><span style="background-color:initial">Professor </span><span style="background-color:initial;font-weight:700">Pernilla Wittung-Stafshede </span><span style="background-color:initial">at the Department of Biology an</span><span style="background-color:initial">d Biological Engineering  </span></div> <div><span style="background-color:initial"><br /></span></div> <div><span style="background-color:initial"></span></div> <p class="chalmersElement-P">Earlier years, Professor <span style="font-weight:700">Per Delsing, </span><span style="background-color:initial">Professor <strong>Peter Andrekson </strong></span><span style="background-color:initial">and Professor </span><span style="background-color:initial;font-weight:700">Owe Orwar</span><span style="background-color:initial;font-weight:700"> </span><span style="background-color:initial">have been choosen to be Wallenberg Scholars. </span></p> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more at the webpage of the Knut and Alice Wallenberg Foundation.  </a></div></div> <div><span style="background-color:initial"></span></div>Mon, 25 Mar 2019 09:00:00 +0100 identify yourself with your luminous slime<p><b>​Using digital solutions to identify and verify documents has become increasingly common, but digital codes can be broken. Researchers at Chalmers propose in an article in the journal Chemical Science an alternative to the digital, a luminescent gel.</b></p>​<span style="background-color:initial">What happens if you mix a luminescent molecule, two molecules that react to light and one gel? A hack-proof identification system, says Associate Professor Henrik Sundén at the Department of Chemistry and Chemical Engineering, Chalmers.</span><div><br /><span style="background-color:initial"></span><div>The identification technique is based on the ability to state the right color within the well-established CIE diagram. By illuminating the identification gel during a given time and with a given wavelength on the light, the right color is revealed. The color emitted can be controlled in several different ways and is dependent of the composition of the molecules, but also of which wavelengths the gel is illuminated with and for how long. Only the person who has access to the correct lighting sequence and the correct composition of molecules will succeed in giving the correct coordinates in the CIE diagram. In other words, it is impossible to give the correct identification code without the gel. The mixture can potentially form the basis of a hack-proof authentication system.</div> <div><br /></div> <div>“Traditional methods for these purposes require complex mathematical algorithms and processing power. By using a gel and light instead, we can achieve similar results with considerably less resources”, says Henrik Sundén.</div> <div><br /></div> <div>The technique is based on a gel that contains a kind of luminescent, or fluorescent, molecules, and one or two types of photoresponsive molecules triggered by light exposure. The fluorescent molecule shines naturally in a blue tone, but when its blue light shines on the photoresponsive molecules, they are activated and the mixture begins to shine in another color. The enclosing gel consists of a specially designed molecule with self-healing properties. This allows the identification gel to be reused again and again. Thanks to the complexity of the processes that underlie the color changes of the gel, it is practically impossible to predict them on the basis of a given lighting sequence. It is the same unpredictability that is behind today's digital encryption algorithms.</div> <div><br /></div> <div>“Unlike digital solutions, it is not possible to hack molecules. When you identify yourself with today's digital system, you can probably hack the code, but if we disconnect the digital and instead use a gel and a spectrophotometer codes can be created that cannot be cracked digitally”, says Henrik Sundén.</div> <div><br /></div> <div>By using the established color chart CIE as the coordinate system, authenticity can be verified. The idea is that both parties in the identification situation agree on a certain composition of the gel. When the identification takes place, the person who is to be identified must receive a number of wavelengths to expose the gel with and time indication for how long. The colors that appear after the correct exposure are plotted into the coordinate system. These provide a non-linear curve that is completely unique to precisely the input conditions. If both parties' results match one another, the identification is approved.</div> <div><br /></div> <div>The combination of right lighting sequence and composition and concentration of the gel entails an incalculable number of combinations. In the article, the researchers show a proof of concept. However, much further research remains, but in the future, you may have slime in your pocket instead of digital ID.</div> <div><br /></div> <div><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the article here</a></div> <div>​<br /></div></div> <div>Text and image: Mats Tiborn</div>Fri, 22 Mar 2019 00:00:00 +0100 damage modeling of the machining process<p><b>Senad Razanica, Material and Computational Mechanics IMS, ​ defends his doctoral thesis on March 28.</b></p>​Opponent: Professor Jörn Mosler, Department of Mechanical Engineering, TU Dortmund, Germany<div><br /><div><strong>Doctoral thesis defence </strong><span style="background-color:initial"><strong>Senad Razanica</strong></span><br /></div> <div><span style="background-color:initial">2019-03-28 10:00</span><div>Virtual Development Laboratory (VDL)</div> <div><br /></div> <div><strong>Popular description</strong></div> <div>Machining is a collective term for various material removal processes comprising e.g. turning, milling and grinding. These are among the most common manufacturing processes for producing component and products used on a daily basis. As a matter of fact, machining is often applied as a final step in the production line in order to reach correct workpiece dimensions, surface finish and shape, with close tolerance accuracy thus accounting for approximately 15 % of the value of all mechanical components worldwide.     During a turning operation, the topic of the current thesis, a material portion called “chip” is removed from the workpiece using a cutting tool. A considerable waste of material, up to 10 % of the workpiece material might be removed in order to reach the final geometrical dimensions of the product. Desired product properties are achieved by controlling the processing parameters e.g. cutting forces, chip morphology, temperature and surface roughness which may be a difficult task.    Currently, the manufacturing industry addresses these challenges via simulation tools to increase the knowledge and optimization possibilities of the operation. Hence, in order to accurately simulate the machining processes, it is of utmost importance to accurately represent the behavior of the workpiece material, the interaction at the tool-chip interface and the local fracturing that occur during the chip formation. During this material removal process, regions of the workpiece material are subjected complex phenomena e.g. extremely large deformations, high strains and strain-rates together with elevated temperatures.     Thus, in the current thesis, a modeling framework is presented which accounts for both the material response, tool-chip interaction and fracture in the workpiece during machining. In particular main efforts have been put on the development of a model to represent the onset and evolution of damage followed by subsequent fracture. The modeling framework is implemented in a commercial software to simulate 2D machining (orthogonal cutting). The results obtained are validated against experimentally obtained chip formations, cutting forces and tool-chip contact lengths for machining of the difficult-to-cut material, Alloy 718. <br /></div> <div><br /></div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />More about <span style="background-color:initial">Senad Razanica</span></a></div> <div><span style="background-color:initial"><br /></span></div> <div><br /></div></div></div>Tue, 19 Mar 2019 00:00:00 +0100 for large European test bed project in additive manufacturing<p><b>​Chalmers University of Technology has been entrusted with the project management of the largest EU investment so far in additive manufacturing. The 155 MSEK project is called Manuela (Additive Manufacturing Using Metal Pilot Line) and will lead to a new European test bed for researchers and companies to test product value chain in additive manufacturing, from start to end.</b></p>​<span style="background-color:initial">In October last year Lars Nyborg, coordinator, officially kicked-off the new project Manuela in Brussels. It is one of the biggest projects in additive manufacturing in Europe with a budget of € 15.5 million of which a large part of the funding ends up in Gothenburg.</span><div>“To be selected to coordinate a project of this size, it’s a real success,” says Lars Nyborg. “Thanks to our joined forces in the consortium, strong and competent organization at Chalmers, e.g. the Grants Office and CIT, and state-of the art research such as the Area of Advance Production and the Vinnova competence Centre for Additive Manufacturing – Metal, CAM2, we got this opportunity,” he concludes.</div> <div><br /></div> <div><strong>The ambition is</strong> to provide European industry with world class, reliable pilot line manufacturing service leveraging metal additive manufacturing products. </div> <div>This will be achieved by having the hardware solutions cost efficiently connected to the best possible competences and capacities across Europe to cover the full range of powder bed fusion technologies from medium to large scale laser powder bed fusion (LPBF) as well as electron-beam melting (EBM). Since, no single machine solutions can fit all necessary end user demands, this concept is expected to best possible solution from cost and agility point of view. </div> <div><br /></div> <div><strong>There are a lot of advantages</strong> of metal additive manufacturing, or 3D printing. It enables fabrication of advanced prototypes and functional components with increased design flexibility and reduced lead times. Some of the expected impact are:</div> <div><ul><li>Production time saving up to 60% over the full production chain</li> <li>Production speed will be increased by &gt; 30%</li> <li>Robustness of metal AM-based processes will be increased by more than 40%</li> <li>Time to market will be reduced by at least 30%</li></ul></div> <div>“The strength of the Manuela pilot line lays in the cooperation between the RTD partners enabling industrial partners and end users to request most advanced demonstrators by selecting from the various manufacturing routes and functionalities provided. This ensures that the end-users can expect optimum output with respect to costs, reliability and performance,” says professor Lars Nyborg.</div> <div><br /></div> <div><strong>The Manuela project</strong> will be in focus at the upcoming fair <a href="">Advanced Engineering 2019</a>, 27-28 March, Åbymässan, Gothenburg where Lars Nyborg, Chalmers, Department of Industrial and Materials Science, and Karl Lundahl, project leader, Chalmers Industriteknik will talk about the project.</div> <div><br /></div> <div><br /></div> <div><br /></div> <div><strong>ABOUT MANUELA</strong></div> <div>In the period of 4 years, MANUELA aims at deploying an open-access pilot line facility, covering the whole production sequence, to show full potential of metal AM for industrial AM production.</div> <div>Manuela consists of a consortium of industrial end user’s, suppliers, (material/powder, AM hardware, quality monitoring system, software, automation and post-AM treatment) as well as top research institutes in powderbed metal-AM, covering full range of AM technology chain for pilot line deployment. </div> <div>The deployed pilot line will be validated with use cases, covering wide span of applications including automotive, aerospace, energy and medical.</div> <div><div><a href="" target="_blank"><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more​</a>​</div></div> <div><br /></div> <div><strong>Coordinator</strong></div> <div>Chalmers University of Technology</div> <div><a href="">Lars Nyborg​</a>, Professor in Surface Engineering, Director of Chalmers Production Area of Advance, Division of Materials and Manufacture, Department of Industrial and Materials Science<span style="background-color:initial">         </span></div> <div><br /></div> <div><strong>Project time</strong></div> <div>4 years (Oct 2018-Sep 2022)</div> <div><br /></div> <div><strong>Partners</strong></div> <div>Chalmers University of Technology, CSEM, Friedrich-Alexander-Universität Erlangen-Nürnberg, RISE IVF, Cardiff University, Politecnico di Torino, Höganäs AB, Electro Optical Systems Finland Oy, ABB AB, OSAI Automation Systems, METAS, Siemens Industrial Turbomachinery AB, QIOPTIQ, O.E.B. SRL, RUAG Slip Rings SA, AMIRES SRO, Stiftelsen Chalmers Industriteknik, ENEL PRODUZIONE SPA, BIOMEDICAL ENGINEERING S.R.O</div> <div><br /></div> <div><strong>Funding</strong></div> <div><a href="">Horizon 2020, H2020-NMBP-FOF-2018</a></div> <div><br /></div> <div><br /></div>Thu, 07 Mar 2019 00:00:00 +0100