News: Kemi- och bioteknik related to Chalmers University of TechnologyFri, 26 Jan 2018 12:09:15 +0100 study increases the trustworthiness of charcoals.<p><b>​Charcoal filters are shaped to protect against and sample radioactive methyl iodide. But how well do the filters protect us from and capture other kinds of radioactive organic iodine? Researchers at Chalmers recently published an article about this in the journal Nuclear Engineering and Design.</b></p>​Charcoal filters are used in environmental sampling to estimate radioactive iodine both under normal operating conditions and during emergencies. They are used in protection systems such as air purifying filter respirators to protect against radioactivity. But they must be versatile. Iodine can exist in many forms during a nuclear accident. <div><br />One of the most common types is methyl iodide, which is why the charcoal filter is designed to retain this kind of iodine. But there may also be other kinds of radioactive iodine, and as the formation of other organic iodine compounds has been observed in nuclear plants it can be reasoned that a failure of a charcoal to retain other types of organic iodine than methyl iodide could have adverse consequences. </div> <div><br />Researchers at Chalmers have investigated how different charcoals have the ability to capture radioactive organic iodine compounds other than methyl iodide. </div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">– Of the compounds tested it has been found that methyl iodide is the compound which is most poorly retained by charcoal. The charcoal in our tests was more able to capture and retain ethyl iodide, isopropyl iodide and chloromethyl iodide than methyl iodide. This is an important finding as it indicates that we can better trust the charcoal based devices used to sample the radioactive iodine in the air and also that we can better trust respirator filters which are based on the charcoal with the standard methyl iodide fixing agent, says <a href="/en/staff/Pages/foreman.aspx">Associate Professor Mark Foreman</a>.</span></div></blockquote> <div style="font-size:14px">Compared with many other radioactive elements, iodine has a particularly high ability to harm humans and other animals. All vertebrates have a thyroid, a small but vital gland which controls the metabolic rate and other important bodily functions. The thyroid gland needs iodine to work properly and it absorbs both radioactive and non-radioactive iodine, which may lead to thyroid cancer if it is exposed to the harmful kind.  </div> <div style="font-size:14px"> </div> <div>A lot of radioactive iodine is formed by the fission of uranium and plutonium atoms in a nuclear reactor. During a serious nuclear reactor accident a large fraction of the radioactive iodine in the fuel can escape from the core and subsequently from the plant. The iodine also has the potential to become very mobile, it can form several gases and very low boiling point compounds. While the noble gases in reactor fuel are more mobile than iodine, the iodine is often of greater concern as its chemistry and biology causes it to be more radiotoxic. </div> <div><a href="">Read the article here</a><br /></div> <div><br /> Text: Mats Tiborn</div>Fri, 26 Jan 2018 00:00:00 +0100 methods to analyze molecular dynamics in biology, chemistry and physics<p><b>​A recent paper in Nature Chemistry, involving Chalmers guest researcher Jakob Andreasson, explains a key principle behind reaction of metalloenzymes.</b></p><p class="chalmersElement-P">​<img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Areas%20of%20Advance/Materials%20Science/News/Jakob-Andreasson.jpg" alt="" style="margin:5px" />In biology, chemistry, and physics, molecular function is strongly dependent on the interaction between structure and dynamics. In processes such as photosynthesis and many types of catalysis, charge transfer reactions between metal ions and their surroundings, and the time scale on which they occur, play a major role. Jakob Andreasson, guest researcher at the Condensed Matter Physics division at Chalmers University of Technology, has together with an International and interdisciplinary team of researchers performed a study where a combination of ultrashort X-ray and laser pulses were used to show how the local binding of copper ions depends on the speed of charge transfer in photochemical reactions. The results of this demanding series of experiments were published earlier this week in Nature Chemistry.</p> <p class="chalmersElement-P">The research project is led by Sonja Herres-Pawlis from the RWTH Aachen University (RWTH),  Michael Rübhausen from the University of Hamburg and Wolfgang Zinth from Munich’s Ludwig Maximilian University.</p> <p class="chalmersElement-P"><a href="">Read the press release from DESY</a><br /></p> <div> </div> <div><a href="">Read the article in Nature Chemistry<br /></a></div> <div>doi:10.1038/nchem.2916</div> <div><br /> </div> <div><p class="chalmersElement-P"><em>Photo: Jakob Andreasson during preparations for an experiment at the AMO instrument at the X-ray Free Electron Laser LCLS at SLAC, Stanford, California. </em>(Jakob Andreasson, private)</p> <div><a href=""></a> </div></div>Fri, 19 Jan 2018 11:00:00 +0100,-cheap-to-produce-and-easy-to-transport,-new-Wallenberg-Academy-Fellow-project.aspx,-cheap-to-produce-and-easy-to-transport,-new-Wallenberg-Academy-Fellow-project.aspxPolymer solar cells, new Wallenberg Academy Fellow project<p><b>Solar cells are predicted to play an important role in reaching a sustainable energy production, but a problem with the silicon based is their complicated manufacture process. Associate Professor Ergang Wang receives funding as a Wallenberg Academy Fellow to develop polymer solar cells that are bendable and easy to produce.</b></p><div><div>Organic solar cells, OSCs, normally consist a polymer as donor and a fullerene derivative as acceptor in the active layer. However, the fullerene derivate, which is the most common acceptor, cannot guarantee high enough efficiency and stability of OSCs to change the solar power market. As a Wallenberg Academy Fellow <a href="/sv/personal/Sidor/ergang.aspx">Ergang Wang </a>will explore another, fullerene-free path for the OSC. </div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">“This fellowship gives me freedom to explore the fields where I believe a solution may exist. It is of course an honour to become a Wallenberg Academy Fellow and a great feeling to finally get it. You should never give up!” he says.</span></div></blockquote> <div>OSCs have the advantages of light-weight, low cost and fast high-volume production. They are also believed to have little environmental impact. Due to the promise of OSCs, many countries have invested heavily in the research and development of OSCs with the aim of commercializing them. As a result, the development of OSCs has been significant with efficiencies improving from 1 percent to over 14 percent in the last two decades. Still the technology is not yet ready for practical applications.</div> <div><br />Fullerenes are football shaped molecules that have many good characteristics in many applications. In many OSCs of today they are used as acceptors in the cell’s active layer. The problem, however, is low stability caused by molecular diffusion, weak absorption in solar spectrum region, high cost and high-energy consumption required to produce fullerene derivatives themselves. Therefore, in order to boost the efficiency and stability of OSCs, there is a strong need to replace fullerenes as the acceptors in OSCs.</div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">“For long researchers have tried to improve the fullerenes to be optimised for the OSCs. I want to try a different path. I want my OSCs to be independent from the limitations of fullerenes,” says Ergang Wang.</span></div></blockquote> <div>Ergang Wang and his group have already come far in the development of solar cells only consisting of polymers in the active layer. They have reached an efficiency of nine percent with a blend based on three polymers. They are very light and easy to produce in big roll-to-roll printing machines, kind of like the ones than newspapers are produced in. The major issue now is to get a better stability and efficiency.</div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">“I believe that we are on the right track and my vision is that we, because of the funding, may be able to create a prototype with the right efficiency and stability to be able to start collaborations with industry.”</span></div></blockquote> <div>Ergang Wang thinks there is a great interest for breakthroughs in this kind of technology since it is sustainable both ecologically and economically. His goal is to reach towards an efficiency of around fifteen percent, which is a figure he says may make OSCs profitable and competitive in the market. </div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">“The silicon cells will be more efficient for a long time forward but OSCs will be more cost effective in the long run. In ten years we may have reached far enough to have the technology on the market with for example polymer solar cells that you may put on your window or at the roof top,” says Ergang Wang.</span></div></blockquote> <div>The funding for the Wallenberg Academy Fellowship is SEK 7.5 million over five years with a possible extension of five more years. In addition Chalmers will fund the fellowship with another SEK 5 million for five years. <br />     </div> <div>    </div></div> <div><div>Text: Mats Tiborn</div></div> ​Thu, 14 Dec 2017 00:00:00 +0100 safety of nuclear fuel repositories<p><b>​Lovisa Bauhn, at the Department of Chemistry and Chemical Engineering, recently defended her thesis related to the final repository of used nuclear fuel.</b></p><p>​Could you please tell us a little bit about your research and your results?</p> <blockquote dir="ltr" style="margin-right:0px"><p><span style="font-size:14px">According to the KBS-3 method, the used fuel will be placed in copper canisters at a depth of 500 metres in the bedrock, where it should be isolated from contact with groundwater. However, scenarios of groundwater intrusion into the canisters are investigated as part of the safety assessment. In such a scenario, migration of radiotoxic elements into the environment depends on the dissolution behaviour of the UO2 matrix, which could be altered by oxidative species formed during radiolysis of the water. Previous studies have shown that hydrogen gas (which would be formed through anoxic corrosion of canister iron in case of groundwater contact) inhibits the radiation induced oxidative dissolution of the fuel. My research has therefore been focused on further investigations of this hydrogen effect. The results show that the fuel surface itself has an important role in activating the hydrogen, and that the hydrogen effect can be maintained even at very high levels of alpha activity.</span></p></blockquote> <p>What can your results be used for?</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p dir="ltr" style="font-size:14px;margin-right:0px"><span style="font-size:14px">The results can be used to provide further understanding of the dissolution behaviour of used nuclear fuel under repository conditions, and they are positive in the sense that they confirm the limited possibility of radionuclide migration with groundwater.</span></p></blockquote> <p dir="ltr" style="margin-right:0px">Can you see your results put into action in the future? </p> <blockquote dir="ltr" style="margin-right:0px"><p dir="ltr" style="margin-right:0px"><span style="font-size:14px">Yes, they can be taken into consideration in future repository research and safety assessments.</span></p></blockquote> <p dir="ltr" style="margin-right:0px">What are you doing now after becoming PhD?</p> <blockquote dir="ltr" style="font-size:13px;margin-right:0px"><p dir="ltr" style="font-size:13px;margin-right:0px"><span style="font-size:13px">I am currently working as a researcher at Industrial Materials Recycling at Chalmers.</span></p></blockquote> <div> </div>Mon, 04 Dec 2017 00:00:00 +0100 method maps chemicals in the skin<p><b>​A new method of examining the skin can reduce the number of animal experiments while providing new opportunities to develop pharmaceuticals and cosmetics. Chemical imaging allows all layers of the skin to be seen and the presence of virtually any substance in any part of the skin to be measured with a very high degree of precision.</b></p>​More and more chemicals are being released into our environment. For example, parabens and phthalates are under discussion as two types ofchemicals that can affect us. But so far it has not been possible to find out how they are absorbed by the skin. A new study from Chalmers University of Technology and the University of Gothenburg shows how what is termed chemical imaging can provide comprehensive information about the human skin with a very high level of precision.<br /><br />Investigations into how substances pass into and through the skin have so far taken<img width="400" height="215" class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/nickel.png" alt="" style="margin:5px" /> place in two ways:by using tape strips to pull off the top “corneal” layer of skin for analysis,and throughurine and blood testing to see what has penetrated through the skin. But we still know very little about what happens in the layers of skin in between. Chemical imaging now allows us to see all layers of the skin with very high precision and to measure the presence of virtually any substances in any part of the skin. This can lead to pharmaceutical products that are better suited to the skin, for example. <div> </div> <div>The new method was created when the chemists Per Malmberg, at Chalmers University of Technology,and Lina Hagvall, at the University of Gothenburg, brought their areas of research together.</div> <blockquote dir="ltr" style="margin-right:0px"><div><em style="font-size:14px"><span style="font-size:14px"><img width="200" height="257" class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Lina%20Hagvall.jpg" alt="" style="height:171px;width:133px;margin:5px" /><br />“With pharmaceuticals you often want as much as possible of the dose to be </span></em><em style="font-size:14px"><span style="font-size:14px">absorbed by the skin, but in some cases you may not want skin absorption, such as when you apply a sunscreen, which needs to remain on the surface of the</span></em><em style="font-size:14px"><span style="font-size:14px"> skin and not penetrate it. Our method allows you to design pharmaceuticals according to the way you want the substance to be absorbed by the skin,” says Hagvall.</span></em><span style="font-size:14px"> </span></div></blockquote> <div>Chemical imaging has until now mainly been used for earth sciences and cellular imaging, but with access to human skin from operations the researchers have come up with thisnew area for the technology. The researchers now also see opportunities opening up for replacing pharmaceutical tests which currently involve animal experiments. Their methods provide more accurate results than tests on mice and pigs. Since it is not permissible to use animals to test cosmetics, this method may also create new opportunities for thecosmetics industry.</div> <div> </div> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><em style="font-size:14px"><span style="font-size:14px">“Many animal experiments carried out by researchers and companies are no longer necessary as a result of this method. If you want to know something about passive absorption into the human skin, this method is at least as good. It’s better to do your testing on human skin than on a pig,” says Hagvall.</span></em></div> <div style="font-size:14px"><em style="font-size:14px"></em><span style="font-size:14px"></span> </div></blockquote> <div dir="ltr">The new method can also provide a basis for determining the correct limits for harmful levels of substances that may come into contact with the skin. In order to establish those limits, youneed to know how much of the dose on the skin’s surface penetrates into and through the skin, which this method can show. It enhances our knowledge about what we are absorbing in our workplaces and in childcare facilities. </div> <blockquote dir="ltr" style="margin-right:0px"><div> <img width="200" height="257" class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Per%20Malmberg.jpg" alt="" style="height:171px;width:133px;margin:5px" /><br /><em style="font-size:14px"><span style="font-size:14px">“Our method can show everything with an image, whether you are looking for </span></em><em style="font-size:14px"><span style="font-size:14px">nickel, phthalates or parabens in the skin, or if you want to follow the drug’s path through the skin. Withjust a skin sample we can essentially search for any molecules. We don’t need to adapt the method in advance to what we are looking for,” says Malmberg.</span></em><br /></div></blockquote> <div>It will be possible to apply the results in the very near future. The technology itself is ready for use today. There is still a small amount of work left to do in optimising the tests to achieve the best results, but the researchers believe that the method will be ready for use within a year.</div> <div><br /><strong>Facts: </strong><strong>Chemical imaging</strong></div> <div>Chemical imaging involves the use ofa laser or ion beam to analyse the sectionsof skin using a mass spectrometer. Every dot, or pixel, of the section which the beam strikes provides information, which is used to classify the chemicals present in the skin according to molecular weight. The chemical information from each dot can then be combined into a digital image which shows the distribution of a substance in the skin. A time-of-flight secondary ion mass spectrometer (ToF-SIMS), which provides a very high spatial resolution down to the nanometre range, was used in this particular study.</div> <div><br /></div> <p><img width="960" height="641" class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Kemikalier%20i%20huden%20avbildas%20med%20ny%20metod/Chemical%20imaging2.png" alt="" style="height:205px;width:322px;margin:5px" /></p> <p> </p> <p> </p> <p>The chemists Lina and Per make samples ready for analysis in the ToF-SIMS. When analyzed, samples are introduced into the test chamber using the test arm as seen in the bottom of the image.</p>Tue, 28 Nov 2017 00:00:00 +0100 awards to Chalmers corrosion chemist<p><b>​Mohsen Esmaily, researcher at the Inorganic Environmental Chemistry Division has recently received two prestigious awards from the Electrochemical Society and Acta Materialia Inc for cutting-edge research in the field of materials and corrosion science.</b></p><p><a href="/en/Staff/Pages/mohsen-esmaily.aspx">​​Mohsen Esmaily</a> is currently employed as postdoctoral research fellow at the Department of Chemistry and Chemical engineering, Division of Energy and Materials at Chalmers University of Technology. He completed his Ph.D. at the same university in Feb. 2016 “The role of Microstructure in the Atmospheric Corrosion of selected Light Alloys and Composites”. The thesis includes 16 peer reviewed journal papers. For the ground breaking results achieved in this thesis he is now given the two prestigious awards. </p> <p>​Mohsen Esmaily showed in his thesis and also later work ways to create much more corrosion resistant magnesium alloys than this far has been possible. This may open up the field for new lightweight magnesium constructions, and thus may in the long run lead to a reduction of harmful emissions.   </p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">“To make the world a better place is my biggest goal, but along the way I need some support and appreciation so it was really rewarding for me to see that my work was appreciated by the community. I am thinking about all the days, nights, weekends, summers and holidays when I was in the office and in the lab instead of being with my family, with my son. I was happy when I got the awards because I knew that I have made a great contribution. I now feel even more motivated than before to do high quality research, but I also need to have more balance in my life”, says Mohsen Esmaily.</span></p></blockquote> <p>Recently he also, together with leading corrosion scientists from Spain, Germany, Australia, and USA coauthored a 100 pages comprehensive review summarizing decades of Mg corrosion research as well as some new unpublished data. It was published August 2017 in the highly ranked journal <em>Progress in Materials Science</em> with reviewers comments such as “the best review I’ve ever seen in the field of corrosion”, “superior to the majority of previous Mg review articles”, and “a tremendous contribution to the field of Mg corrosion”. The paper is now listed as the second most downloaded review in the journal.</p> <blockquote dir="ltr" style="margin-right:0px"><p><span style="font-size:14px">“I was managing the team and we had a (very) tight deadline. That was also a lot of hard work, but I would really suggest such work to other people at my level because at the end of this review I saw the bigger picture of our research, I found many interesting unknowns, and could select much better questions in the field of materials science to answer in the future. Also, I had the chance to interact with many prominent scientist”, says Mohsen Esmaily. </span></p></blockquote> <p>Previously, Mohsen Esmaily’s achievements in the field of light alloys corrosion have been recognized and rewarded by the Royal Swedish Academy of Engineering Sciences, and the Wallenberg Foundation. </p> <p><br />Read more about Mohsen Esmaily’s awards and research on the links below.<br /><a href="/en/departments/chem/news/Pages/Breakthrough-for-magnesium-lightweight-materials.aspx">Breakthrough for magnesium lightweight materials </a><br /><a href="">2017 Corrosion Division Morris Cohen Graduate Student Award Goes to Moshen Esmaily!</a><br /><a href="">Recipients of the 2016 Acta Student Awards</a></p> <p> </p> <p><img class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Mohsen%20Esmaily%20text.png" width="250" height="175" alt="" style="margin:5px" /></p> <p> </p> <p> </p> <p> </p> <p>Image: ASM Award Ceremony- From left: Dr. William E. Frazier  (American Society of Metals (ASM) president), Mohsen Esmaily (Chalmers), and Prof. Christopher Schuh (The Head of Materials Science Department at MIT) <br /><br /></p> <p>  </p>Thu, 16 Nov 2017 00:00:00 +0100 collisions at a nanoscale<p><b>​​</b></p><p style="font-size:15px"><img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Centrum/SuMo/Frida%20I%20250.jpg" alt="" style="height:176px;width:155px;margin:5px" /><strong>Hydrophobic surfaces are efficient materials to use for instance for packaging p</strong><strong>urposes. </strong><a href="/en/Staff/Pages/frida-iselau.aspx">Frida Iselau industrial PhD student</a><strong> <span style="font-size:14px"><span style="font-size:14px"><span style="font-size:14px"><span style="font-size:14px">at Chemistry and Chemical Engineering and Kemira/AkzoNobel has been studying the fundamental principles of a technique called “Surface sizing”, a method for creating hydrophobic, and thereby more water resistant, paper materials by applying hydrophobic nanoparticles on the paper surface. </span></span></span></span></strong></p> <p style="font-size:15px"><span style="font-size:14px"><span style="font-size:14px"><span style="font-size:14px"><span style="font-size:14px"></span></span></span></span> <br />What can you tell us about your research and results?</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px"><span style="font-size:14px"><img width="228" height="204" class="chalmersPosition-FloatLeft" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/dropletonsurface%20340.png" alt="" style="height:207px;width:223px;margin:5px" /></span>For packaging purposes a paper material needs to be hydrophobic in order to withstand water and moist exposure during transportation and storage. In my research I have shown that it is important to control the colloidal behaviour of the particles in order to get an efficient process and this knowledge can be used for a more knowledge-driven product development in the future. Some parts of my research has already been implemented, both in the particle synthesis process and in the application.</span></p></blockquote> <p>You are an industrial PhD student at Kemira and AkzoNobel. How is that compared to be only in academia?</p> <blockquote dir="ltr" style="margin-right:0px"><p><span style="font-size:14px">I started as an industrial PhD student at AkzoNobel, but two years after I’ve started my PhD studies the Paper Chemicals division at AkzoNobel was divested to the Finnish chemical company Kemira! Fortunately Kemira found my PhD project interesting and it was no problem for me to continue my project. Actually the global R&amp;D Manager Heidi Fagerholm at Kemira is engaged in my project as a steering group member. So I’m not a typical industry PhD student, but the main difference when I compare with only academia is the advantage to have two work places with great competences in different areas. At Chalmers I have access to advanced instrumentation and very skilled people within chemistry and at the company I have access to more specialized equipment and the experience from my colleagues within my research field. </span>  </p></blockquote> <p>How has your collaboration with SuMo BIOMATERIALS been? What help have you gotten from the centre?</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px"><a href="/en/staff/Pages/Romain-Bordes.aspx">Romain Bordes </a>has been my supervisor since 2014. He has been very supporting and a great driving force for my project. My main collaborations have been with <a href="/en/staff/Pages/Aleksandar-Matic.aspx">Aleksandar Matic</a> (Chalmers), <a href="/en/staff/Pages/Tuan-Phan-Xuan.aspx">Tuan Phan Xuan</a> (Chalmers) and Mark Nicholas (AstraZeneca). Aleksandar, Tuan and I have two publications together and their expertise within scattering have contributed much to my project. Mark Nicholas is an expert in ToF-SIMS and we have utilized this technique to reveal how the particles are distributed on and in a paper sheet and we have shown that this correlates to the degree of hydrophobization. Another interesting interaction was with StoraEnso. Chris Bonnerup was the opponent of my Licentiate Thesis. Moreover I have had collaborations with Annika Altskär and Erich Schuster and the SuMo seminars and conferences have been very rewarding as well. </span></p></blockquote> <p>What are your plans for after your thesis defence?</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">After the defence I will stay at Chalmers for a couple of months, finalize some manuscripts. After that I don’t know, if I want to continue within Kemira I would have to move to Helsinki but as for now I would prefer to stay in the Göteborg area. </span></p> <p style="font-size:14px"><span style="font-size:14px"></span> </p></blockquote> <p dir="ltr" style="font-size:14px"><span style="font-size:14px">Image: Kemira</span> </p>Tue, 24 Oct 2017 00:00:00 +0200 initiative in process engineering at Chalmers<p><b>​In order to provide new opportunities for research in process engineering, the Chalmers University of Technology Foundation invested SEK 32.2 million in new equipment and personnel. The purchased MRI equipment means unique opportunities for process research.</b></p><p>​<img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Bengt%20Andersson200.jpg" width="200" height="212" alt="" style="height:182px;width:170px;margin:5px" />During the 1990s process engineering was heavily invested in in Sweden, but lately the focus has been more on developing the product itself than its manufacturing process. With the Chalmers University of Technology Foundation’s initiative for process engineering, new knowledge and new possibilities will be made to streamline the chemical engineering processes. The investment made it possible for the Department of Chemistry and Chemical Engineering to purchase new powerful magnetic resonance imaging equipment, MRI, which can depict non-optically available processes, enabling analyse in detail of what happens when, for example, chemicals are mixed into pulp or when medicine dissolves in stomach acid. Chalmers is one of a handful of universities in the world with similar MRI equipment, and this now give companies like Alfa Laval, AstraZeneca, Tetra Pak, Valmet, SCA, several new opportunities for collaboration with Chalmers in process engineering. </p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">– With the facility, we will be able to contribute to more efficient use of today's process equipment because we will know more about what actually happens inside the device. We will be able to see what is relevant to improve. It may not be the mechanisms that we today think give effect that actually do, and process equipment can therefore be more expedient, says Bengt Andersson, responsible for the MRI infrastructure.</span></p></blockquote> <p>In multi-phase flow, ie process of material in multiple phases, for example emulsions or blends of liquids and fibres, using traditional methods, it is not possible to directly see what happens. The new MRI gives an opportunity to accurately follow the entire process. For example, in the case of paper pulp bleaching, it is difficult to see how the turbulent mixing occur, where it stands still and where it is most in motion. More knowledge can lead to better materials, but also better utilization of equipment in the process industry.</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">– The process industry has noticed that it is not enough only to buy new equipment to progress. They must also look at the equipment they already have and see if it can be used more efficiently. In addition, the materials are becoming so advanced that it is not enough to look at the final composition of the product. You also have to consider how the manufacturing process shapes it, says Professor Bengt Andersson.</span></p></blockquote> <p>In addition to the investment in MRI equipment of SEK 15.4 million over six years, the Foundation's commitment to process engineering also meant that both the Department of Chemistry and Chemical Engineering and the Department of Mechanical and Maritime Sciences could employ a new research assistant each.</p> <p><br /><img src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/mri2700.png" width="750" height="199" alt="" style="margin:5px" /><br /><br />Text and image: Mats Tiborn</p>Thu, 19 Oct 2017 00:00:00 +0200 award to Jens Nielsen for biofuels from yeast<p><b>​Professor Jens Nielsen is awarded the prestigious &#39;Energy Frontiers Award&#39; by the Italian oil company ENI for research on the engineering of microorganisms that open new solutions for the production of fuels and chemical products from renewables.</b></p>​<span style="background-color:initial">&quot;It is a very prestigious award to receive. Among the earlier winners are Nobel Prize laureates, and I am extremely proud to receive this prize for the research on how to produce hydrocarbons in yeast,&quot; says Jens Nielsen, professor in systems biology at Chalmers University of Technology.</span><div><br /></div> <div>To create a society that can do without fossil fuels, it is necessary to make it possible to sustainably produce chemicals that can be used as fuel for cars, trucks and aircraft. Biotechnology offers the opportunity to design microorganisms for the production of such chemicals, which can be integrated directly into the existing energy infrastructure of our society. </div> <div><br /></div> <div>Professor Jens Nielsen’s research on yeast in renewable fuel and chemical production has shown that through the engineering of the metabolism of baker’s yeast – already used industrially for bioethanol production – it is possible to improve the traditional production process, but also to produce chemicals that can be used as drop-in fuels for use with diesel and jet fuel. </div> <div><br /></div> <div>“We have succeeded in redirecting the metabolism in yeast so it can produce these new compounds in small scale, suitable for the production of jet fuel and other fuels, but also antibiotics, dietary supplements and other chemicals interesting for the food and life science industry,” says Jens Nielsen.</div> <div><br /></div> <div>A technical-economic analysis has shown that biotechnology-based production of new biofuels could, if developed further, compete with petroleum-based fuels and make a significant contribution to the development of future energy solutions and a more sustainable society, according to the prize jury.</div> <div><br /></div> <div><br /></div> <h5 class="chalmersElement-H5">About the Eni Award</h5> <div>The prestigious ENI Award has been handed out by the Italian oil company ENI since 2007. Reflecting the ongoing energy transition the award is from 2017 given in eight different categories, with focus on research projects aiming at sustainable use of resources, reducing CO2 and promoting natural gas and renewable energy. <a href="">Read more about the Eni Award​</a></div> Tue, 10 Oct 2017 00:00:00 +0200 cell recycling researcher visits Chalmers<p><b></b></p>​​For about a year Chalmers is reinforced by <a href="">Professor Meng Tao</a> from Arizona State University in Phoenix. Tao’s visit is funded by the Fulbright programme since he was awarded the prestigious Fulbright Distinguished Chair in Alternative Energy Technology. One of his tasks will be to contribute to the research in <a href="/en/centres/ccr/Pages/default.aspx">Competence Centre Recycling (CCR) </a>with his knowledge in solar cell technology and recycling. He is interested in solar cells from a holistic point of view with the goal set on making the solar cell the prime energy source of the future. <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><div style="font-size:14px"><span style="font-size:14px">- I look holistically at the obstacles that stop solar cells from really reaching a meaningful scale. The roadblocks that I see include lack of raw materials, high energy consumption in the production phase, storage of intermittent energy, and lack of a recycling technology for solar cells. I therefore focus on these areas, says Meng Tao. </span></div></blockquote> <div>If you calculate how many solar cells it takes to produce the amount of energy needed to cover the global demands ther<img class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/KB/Generell/Nyheter/Meng%20Tao%20vid%20solceller_340.jpg" width="340" height="305" alt="" style="height:239px;width:265px;margin:5px" />e is still not enough silver, which is an important metal as an electrode in most solar cells, for this to happen, according to Tao. In addition to making solar cells more efficient he believes in finding a way to replace silver with, for example, aluminium. Furthermore, terawatt-scale production of solar cells would take around half of the world’s electricity production of today, which would not be sustainable. Thirdly, for solar cells to really become a sustainable alternative they have to be recyclable. Meng Tao wants to collaborate with Chalmers to remove these and other obstacles by combining the research on recycling methods for solar cell materials that is being carried out at Chalmers and at his home university. </div> <div><br />He will be positioned at the Department of Chemistry and Chemical Engineering, but he is interested in research from all over Chalmers. </div> <blockquote dir="ltr" style="margin-right:0px"><div><span style="font-size:14px">- One of the reasons I came to Chalmers is for the competence in recycling research that can be found in CCR, but I also look forward to getting to know more about the energy research that is going on here and also about the projects around electric vehicles that are conducted at the Swedish Electromobility Centre. Chalmers and my home university have much in common. We have strategic areas that correspond to Chalmers’s Areas of Advance, both by being platforms for different research disciplines but also because our themes overlap significantly. Our universities could gain a lot by collaboration, he says.</span></div></blockquote> <div><a href="/en/Staff/Pages/bms.aspx">Britt-Marie Steenari </a>is director of the competence centre CCR and will work together with Meng Tao much. She thinks it is very positive that he is here:</div> <blockquote dir="ltr" style="margin-right:0px"><div><span style="font-size:14px">- We conduct research on metal recycling from solar cells. This research will benefit from Meng Tao’s experience. The mutual exchange will be that we have been working on different kinds of solar cells, and may therefor conduct comparative studies and system studies for solar power and energy storing and the material streams, she says.</span></div></blockquote> <div>She also sees possibilities for interesting collaborations with Meng Tao’s home university and expanding Chalmers’ network with other interesting researchers in materials recycling and solar cell materials.<br />Meng Tao’s choice to come to Chalmers is, to Britt-Marie Steenari, a very good thing, but not so surprising.</div> <blockquote dir="ltr" style="margin-right:0px"><div><span style="font-size:14px">- Chalmers was early in seeing materials recycling as a necessary research area. Now it has happened. Many research groups are working with recycling research and development of processes, but the Chalmers Industrial Materials Recycling group is still one of the leading ones in that area. We often get invitations from other universities to participate in materials recycling projects. Chalmers not only host the chemical parts of recycling research, but also production technology, systems analysis, economics and organisation, and all that is needed for a well-functioning and sustainable recycling system. You find all this and more at Chalmers, she says. </span></div></blockquote> <div>The strong research group in materials recycling that exists today at Chalmers is based on the initiative and donation from Stena Metall in 2007, which made way for the international impact of today and led to the collaboration with Meng Tao. He will work at Chalmers until the beginning of summer 2018.</div> <div> </div> <div>Text and image: Mats Tiborn<br /></div>Thu, 21 Sep 2017 00:00:00 +0200 receives the Arne Sjögren award<p><b>​This year’s Arne Sjögren award went to Jelena Lovric for best thesis within Nanoscience and Nanotechnology at Chalmers. She was a PhD student in the Analytical Chemistry group supervised by Professor Andrew Ewing at the Department of Chemistry and Chemical Engineering at and defended her thesis last autumn.</b></p><p>The ceremony took place at the <a href="/en/areas-of-advance/nano/Pages/default.aspx">Area of Advance Nanoscience and Nanotechnology</a>’s community building event August 23. </p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">​-        It is a very pleasant feeling to be awarded. I believe that there are many other PhD students who had challenging and exciting doctoral work which also deserves attention. Additionally, it is a pleasure to know that the scientific community recognizes the significance of the work presented in my thesis and its impact on the future research. It is an award for all people I shared the work with, says Jelena Lovric. </span></p></blockquote> <p>Her advice to other PhD students to succeed with their thesis is to keep being curious, open to collaborations and have self-motivation.</p> <blockquote dir="ltr" style="margin-right:0px"><p><span style="font-size:14px">-    It may happen that you find yourself without scientific results for longer periods of time. During those times it is important to find the ways to stay motivated and remind yourself of the importance of your research, she says.</span></p></blockquote> <p>Her thesis is named <a href="">Probing secretory vesicles and liposome model systems using nanoscale electrochemistry and mass spectrometry</a> in which she is exploring how a cell communicates with its surroundings. Knowledge about this could, in the long run, lead to a better understanding of different processes such as learning and memory, altered neuronal activity associated with phenomena of drug abuse and different neurodegenerative disorders like Parkinson’s and Alzheimer’s disease.</p> <p> </p> <p>See a <a href="/en/departments/chem/news/Pages/Dissertation-Jelena-Lovric.aspx">video where Jelena Lovric</a> explains what her thesis is about. <br /><a href="/sv/samverkan/chalmers-vanner/dagens-chalmers-vanner/Sidor/Arne-Sjögren.aspx">Read more about the Arne Sjögren award</a> (in Swedish) <br />    </p> <p>Text and image: Mats Tiborn<br /></p>Thu, 07 Sep 2017 00:00:00 +0200 friendly networking for nano researchers<p><b>​Top scientists with toddlers in the knee. Professors who play with cars. Varied with useful lectures and poster shows. Everything was possible on the community building event for the Nanoscience and Nanotechnology Area of Advance at Strandbaden in Falkenberg, 21-23 August.</b></p>The sun was shining over the beautifully located facility when we struck down during the first day of the network meeting. On the agenda were lectures with, among others, Peter Nordlander, Professor of Theoretical Physics at Rice University, Houston, Texas, USA, Fredrik Höök, Professor of Biological Physics at the Department of Physics, Witlef Wieczorek, Assistant Professor at the Quantum Device Physics Laboratory at MC2, and Åsalie Hartmanis, CEO of the network organization SwedNanoTech. But there was also time to dip the toes in the ocean next to the nearby seafront.<br /><br />Many of the participants we spoke with greatly appreciated the invited guest lecturers.<br /><br />Janine Splettstößer, Associate Professor at the Applied Quantum Physics Laboratory at MC2, looked forward to knowing more about what is happening in the Area of Advance.<br />&quot;It's good to get an overview of all activities, to be able to interact and get feedback. I also have my own poster for the exhibition&quot;, she said.<br /><br />Janine had brought her two children with her. In a corner of Strandbaden's restaurant, Witlef Wieczorek sat preparing for tomorrow's lecture while entertaining the toddlers.<br />&quot;My own children stayed at home, so I do not take responsibility for these. I'm just enjoying the best of their characteristics&quot;, Witlef laughed, apparently something as sympathetic as a top scientist with the children's mind left.<br /><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_jiesun_andreasd_665x330.jpg" alt="" style="margin:5px" /><br /><em>Jie Sun and Andreas Dahlin.</em><br /><br />In the spacious lecture hall, Jie Sun, Associate Professor at the Quantum Device Physics Laboratory at MC2, and Andreas Dahlin, Associate Professor at the Department of Chemistry and Chemical Engineering, were waiting for the program to continue with Åsalie Hartmani's lecture.<br />&quot;It's fun with the invited lecturers. They give a chance to learn something new&quot;, said Andreas Dahlin.<br />Jie Sun agreed:<br />&quot;The presentations so far have been very good. I liked Peter Nordlander's lecture; it contained very good guidance for me. I also like the poster format, the exhibitions are always a good opportunity to talk with people&quot;, he said.<br /><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_asalie_665x330.jpg" alt="" style="margin:5px" /><br />Åsalie Hartmanis (above) is the CEO of the Swedish umbrella organization for nanotechnology companies, SwedNanoTech. She went to the network meeting to tell about new possibilities of nanotechnology.<br />&quot;My role is to be the spider in the network between society and science. What is the next step in getting nanotechnology in key areas of society?&quot;, she said.<br />She encouraged participants to contact her and SwedNanoTech in different channels:<br />&quot;Call me or email me if you want to discuss matters that are important to you. See you on the web, on Twitter and Facebook&quot;, said Åsalie Hartmanis.<br /><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_posterutst_jury_665x330.jpg" alt="" style="margin:5px" /><br />During the three days, about 60 posters were exhibited and judged by a jury consisting of Peter Nordlander and Katarina Edwards, Professor of Analytical Chemistry at Uppsala University. The researcher behind each poster had to give an elevator speech in front of the jury for 60 seconds. The three best posters were awarded a prize of SEK 5,000 each, to be used for conference trips.<br />On Wednesday morning, prizes for best posters were awarded to Xueting Wang, Department of Chemistry and Chemical Engineering, Battulga Munkhbat, Department of Physics, and Saba Atefyekta, Department of Chemistry and Chemical Engineering.<br /><br />On Wednesday, Arne Sjögren's award for best doctoral dissertation in the nano area 2016 was awarded to Jelena Lovric from the Department of Chemistry and Chemical Engineering.<br /><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_balbinsson_665x330.jpg" alt="" style="margin:5px" /><br />It was the seventh network meeting organized for the researchers of the Nanoscience and Nanotechnology Area of Advance. This time, up to 150 people participated. At the forefront of power, director Bo Albinsson (above), Professor of Physical Chemistry at the Department of Chemistry and Chemical Engineering, and co-director Göran Johansson, Professor of Applied Quantum Physics, and Head of the Applied Quantum Physics Laboratory at MC2.<br />&quot;The community building event is an important meeting place for us nano researchers. We meet annually to exchange knowledge of each other's research and to build a strong community between all nano scientists at Chalmers. This has proved very successful by the emergence of several, for Chalmers new, strong research areas. In addition, it is nice to hang out with senior colleagues and doctoral students from other institutions&quot;, said Bo Albinsson.<br /><img src="/SiteCollectionImages/Institutioner/MC2/News/nanoevent_arrangorer_665x330.jpg" alt="" style="margin:5px" /><br /><span><em>Kevin Marc Seja, Daniel Andrén and Milene Zezzi Do Valle Gomes</em><span style="display:inline-block"></span></span><em>.</em><br /><br />Event organizers Kevin Marc Seja, PhD student at MC2, Daniel Andrén, PhD student at the Department of Physics, and Milene Zezzi Do Valle Gomes, PhD student at the Department of Chemistry and Chemical Engineering, had been working on the event since March. They were happy when we had a chat in a coffee break:<br />&quot;Everything was very loose at the beginning, but then the pieces fell in place and now everything is under control&quot;, they told.<br />Kevin, Daniel and Milene, represent three different departments at Chalmers, and are all at the beginning of their graduate education. In one way, the trio symbolizes the spirit with the Areas of Advance, established by Chalmers former president and CEO Karin Markides 2009:<br />&quot;​We have established a unique concept of Areas of Advance, which involves an ever-changing, ongoing exchange of expertise across disciplines, between students and teachers, and alongside partners from industry and society – beneficial to all.&quot;<br /><br />Text and photo: Michael Nystås<br /><br /><a href="/en/departments/mc2/news/Pages/Fifth-networking-event-for-AoA-Nano.aspx">Read previous news</a> &gt;&gt;&gt;<br /><br /><a href="/en/areas-of-advance/nano">Read more about the Nanoscience and Nanotechnology Area of Advance</a> &gt;&gt;&gt;<br /><br /><a href="/en/departments/chem/news/Pages/Dissertation-Jelena-Lovric.aspx">See the Arne Sjögren's Award laureate Jelena Lovric tell about her research</a> &gt;&gt;&gt;<br />Mon, 04 Sep 2017 08:00:00 +0200 Frontiers Symposia<p><b>​In late May, for the tenth year in a row, Molecular Frontiers held another well attended symposium. World-leading scientists and high school students gathered in The Beijer Hall at The Royal Swedish Academy of Sciences to participate in the event, with the theme Tailored Biology. In December another symposium will be held, on Chalmers and with a new current topic.</b></p><p>​Molecular Frontiers is a non-profit organization that aims to bring forward the research front within molecular science, and stimulate young people’s interest in the nature of science. Annually, the organization arranges symposiums, where high school students get a unique opportunity to listen to and interact with world-leading scientists and Nobel Prize winners.  </p> <p>During the symposium in May, two panel discussion were held, where the high school students (that accounted for about half of the audience) asked questions about everything from the origins of life to the medicine of the future.</p> <p><a href="/en/Staff/Pages/per-thoren.aspx">Per Thorén</a>, Project Manager and Chief Operating Officer for Molecular Frontiers, has been a part of the organization since it was founded in 2007. He expresses his contentment over the huge commitment and curiosity that emerged during the latest event.</p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">- It was probably the best symposium we have had so far, but I say that every year, as it is constantly developing and improving! The high school students came well prepared with good questions and it was obvious that the lecturers thought it was fun to discuss and answer them, says Per Thorén.</span></p></blockquote> <p>During the last ten years, the symposia has been arranged not only in Sweden, but also in Bangalore, Singapore, Korea and Tokyo. Several different topics have been discussed, such as the origin of life, energy, the brain and various technologies in biomedicine. In December, it is time for another symposium, this time on Chalmers with the topic sustainable energy. In preparation for this, Molecular Frontiers has invited ten influential lecturers and visitors from all around the world. </p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">- We have a very exciting program and a highly current topic in front of us. It’s also extra fun that we are welcoming lecturers and visitors to Chalmers, since it is the headquarter of Molecular Frontiers. </span></p></blockquote> <p>The symposia is free of charge and open to all. In December, it is arranged in a big lecture hall that can accommodate approximately 450 people, and Per Thorén is hoping that it will be filled with scientists and associated research groups from other universities in Sweden as well. </p> <blockquote dir="ltr" style="font-size:14px;margin-right:0px"><p style="font-size:14px"><span style="font-size:14px">- Molecular Frontiers is bringing people together to a scientific platform. There are no sharp boundaries between chemistry, physics, medicine or biology – in the end, it’s all about molecules, says Per Thorén.</span></p></blockquote> <p><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read more about Molecular Frontiers</a><br /><a href=""><img width="16" height="16" class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />See the lectures on YouTube</a><br /></p> <div> </div>Thu, 29 Jun 2017 00:00:00 +0200 ten times as effective as pure platinum in fuel cells<p><b>​A new type of nanocatalyst can result in the long-awaited commercial breakthrough for fuel cell cars. Research results from Chalmers University of Technology and Technical University of Denmark show that it is possible to significantly reduce the need for platinum, a precious and rare metal, by creating a nanoalloy using a new production technique. The technology is also well suited for mass production.</b></p><div>​”A nano solution is needed to mass-produce resource-efficient catalysts for fuel cells. With our method, only one tenth as much platinum is needed for the most demanding reactions. This can reduce the amount of platinum required for a fuel cell by about 70 per cent”, says Björn Wickman, researcher at the Department of Physics at Chalmers. </div> <div> </div> <div>If this level of efficiency is possible to achieve in a fuel cell, the amount of required platinum would be comparable to what is used in an ordinary car catalytic converter. </div> <div> </div> <div>“Hopefully, this will allow fuel cells to replace fossil fuels and also be a complement to battery-powered cars”, says Björn Wickman. </div> <div> </div> <div>Even though there have been fuel cell cars for about fifty years, advances have not led to a commercial breakthrough. The catalysts in today’s fuel cells require large amounts of platinum, which is one of the world’s most expensive metals. </div> <div> </div> <div><img width="174" height="174" class="chalmersPosition-FloatRight" src="/SiteCollectionImages/Institutioner/F/Blandade%20dimensioner%20inne%20i%20artikel/legering_narbildI200x200MG_0737.jpg" alt="" style="margin:5px" />Previous research has shown that it is possible to mix platinum with other metals, such as yttrium, to reduce the amount of platinum in a fuel cell. Even so, no one has yet managed to create alloys with these metals in nanoparticle form in a manner that can be used for large-scale production. The major problem has been that yttrium oxidizes instead of forming an alloy with the platinum. </div> <div> </div> <div>This problem has now been solved by Chalmers researchers by combining the metals in a vacuum chamber using a technique called sputtering. The result is a nanometre-thin film of the new alloy that allows mass-produced platinum and yttrium fuel cell catalysts.</div> <div> </div> <div>To use the new material, today’s fuel cells need to change slightly, but doing so creates incredible opportunities.</div> <div> </div> <div>“When we can use our resources better, we save both the environment and lower costs. Fuel cells convert chemical energy into electrical energy using hydrogen and oxygen – with water as the only product. They have huge potential for sustainable energy solutions in transport, portable electronics and energy”, says Niklas Lindahl, researcher at the Department of Physics at Chalmers. <br /></div> <div><a href="">The results were recently published in the journal Advanced Materials Interfaces. </a> </div> <div> </div> <div>Text: Mia Halleröd Palmgren, <a href=""></a> </div> <div> ​</div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" /> Read the press release and download high resolution images. </a> </div> <div><img width="695" height="315" src="/SiteCollectionImages/Institutioner/F/750x340/nanokatalysator750x340.jpg" alt="" style="margin:5px" /> Image: Niklas Lindahl <br /></div> <h5 class="chalmersElement-H5">How the new method works: </h5> <div>Nanoalloys of platinum (grey) and yttrium (blue) are created using sputtering in a vacuum chamber. This is done by directing plasma (purple) at a piece of platinum with small attached pieces of yttrium. The nanometre-thin alloy films effectively transform oxygen (red) and protons (white) into water. It is this reaction that causes the fuel cell to generate electricity. </div> <br /><h5 class="chalmersElement-H5">More information: </h5> <div><a href="/sv/personal/Sidor/Björn-Wickman.aspx">Björn Wickman</a>, Assistant Professor, Department of Physics, Chalmers University of Technology,<br />+46 31 772 51 79,</div> <div> </div> <div><a href="/en/staff/Pages/Niklas-Lindahl.aspx">Niklas Lindahl</a>, Post Doc, Department of Physics, Chalmers University of Technology, <br />+46 31 772 33 33,<br /><br /></div> <div><img width="689" height="312" src="/SiteCollectionImages/Institutioner/F/750x340/Bjorn_Niklas_Chalmersplatsen750x340MG_0643.jpg" alt="" style="margin:5px" /> <span>New research results from Chalmers and the Technical University of Denmark can be a key to resource-efficient fuel cell cars. Two of the researchers behind the study are Björn Wickman and Niklas Lindahl at the Department of Physics at Chalmers.  <span style="display:inline-block"></span></span></div> <div> </div> <div><a href=""><img class="ms-asset-icon ms-rtePosition-4" src="/_layouts/images/icgen.gif" alt="" />Read the scientific article “High Specific and Mass Activity for the Oxygen Reduction Reaction for Thin Film Catalysts of Sputtered Pt3Y” in Advanced Materials Interfaces.</a></div> <div> </div> <div>The article was written by Chalmers researchers Niklas Lindahl, Ligang Feng, Henrik Grönbeck, Christoph Langhammer and Björn Wickman, and by Eleonora Zamburlini, Maria Escudero-Escribano, Ifan E L Stephens and Ib Chorkendorff from the Technical University of Denmark. </div>Wed, 24 May 2017 07:00:00 +0200 the movie clip from the expedition in the Arctic<p><b>​Katarina Gårdfeldt, scientist in environmental inorganic chemistry at Chalmers, studies how mercury is being transported and transformed in the environment. Together with her research group she completed a research project in the Arctic Ocean – where several tonnes of mercury end up each year – now you can watch the movie clip from the expedition.</b></p><p>Each year, several tonnes of mercury end up in the Arctic Ocean. The mercury is transported from more southerly latitudes with the wind, and in the Arctic it is converted to the most dangerous form of mercury, methyl mercury – an environmental toxic, harmful to both animals and humans. </p> <p><br />Together with the rest of the participants in the research project, measurements were made in the water, sea ice, snow and air to see how much and what type of mercury there is in the Arctic. </p> <p><br />These measurements help us understand the impact of melting sea ice and other phenomena caused by climate change, on the transport and transformation mechanisms of environmental toxins in the Arctic Ocean.</p> <p><br /></p> <p><br /></p> Fri, 19 May 2017 00:00:00 +0200