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1.5.2011: A winning team
Marcus Bäumer and his student Björn Neumann have successfully participated in the 21 mile race
of the Big Sur International Marathon. Having passed the finish line in 3:20:54 they both occupy leading ranks in their age classes. Congratulations!
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18.3.2011: Electron make sugars water repellent…
…this and other result on the modification of sugars using electron beams were presented today by Alena Ryzhkova during the successful defense of her PhD thesis. Congratulations!
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22.11.2010: Christopher R. Arumainayagam visits the IAPC
This week, Christopher R. Arumainayagam from Wellesley College (Massachussets) visits the IAPC. He will participate in experiments of the working group of Petra Swiderek. The experiments aim at a better understanding of chemical reactions taking place under the effect of ionizing radiation. We look forward to interesting dicussions and experiments. On November 26, Chris will present his research and certainly also his college within our colloquium.
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22.11.2010: The IAPC congratulates Volkmar Zielasek
Member of the IAPC Dr. Volkmar Zielasek concludes his habilitation today. His inaugural lecture takes place at 17:15 (Lecture hall C0300). The IAPC congratulates!
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15.1.2010: IAPC reports on novel gold catalysts in SCIENCE
Green Chemistry is a topic becoming more and more important in research and industry. New environmentally friendly processes need to be developed. An area being particularly important in this respect is catalysis. At the Institute of Applied and Physical Chemistry, Arne Wittstock and other group members study nanoporous gold (npAu) as a new type of heterogeneous gold catalyst. In this project, it was possible to show that npAu can selectively oxidize methanol to methyl formate leading to no or very small amounts of CO2 being the total oxidation product. The results of this study carried out in collaboration with Cynthia Friend at Harvard University and Juergen Biener at the Lawrence Livermore National Lab are published now in SCIENCE.
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19.10.2009: PD Dr. Thomas Kraska joins the IAPC
The semester begins and a new colleague joins the IAPC. PD Thomas Kraska who is a long-term member of the University of Cologne will represent during the winter semester a part of the teaching activities of the group of P. Swiderek and also participate in Analytical Chemistry lectures. His research - statistical thermodynamics and MD simulation f.e. of particle formation and growth - also promises interesting perspectives. We welcome him warmly.
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13.10.2009: Poster prize awarded to Arne Wittstock
Arne Wittstock was awarded with a special prize for his poster presentation on “Lanthanide Oxide Aerogels” at the 2009 Physics School “Nanoscaled Oxides – Big Opportunities in Small Structures”. The Physics School, sponsored by the “Wilhelm und Else Heraeus-Stiftung” took place in Bad Honnef August 2-8.
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10.6.2009: PhD defense of Bernhard Gehl
Bernhard Gehl, one of the first PhD students in the group of Marcus Bäumer at the IAPC will defend his thesis on Thursday, the 11th of June (3 pm, UFT lecture hall). As he got a position in industry already before getting his degree, he catches up for his PhD now. We wish him much success!
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14.5.2009: The smallest catalyst
Angewandte Chemie International Edition reports on very recent results of the AG Swiderek:
“A new strategy to control chemical synthesis by exposure to low-energy electrons relies on the electrostatic attraction caused by the soft ionization of one of the reaction partners. This approach was used to induce a reaction between ethylene and ammonia yielding aminoethane. The reaction resembles a hydroamination except that the electron beam replaces the catalyst used in the organic synthesis.” All details can be found at: http://www3.interscience.wiley.com/journal/122385128/abstract
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27.4.2009: ECCL fellow at the IAPC investigates EBID processes
Electron beam induced deposition (EBID) is used to deposit nanoscale structures at surfaces. Although the method applies a focussed high-energy electron beam, backscattered low-energy electrons play an important role in the underlying chemical processes. Unfortunately, these reactions are not sufficiently understood so far. The IAPC now hosts Laurent Bernau from the EMPA in Thun (Switzerland) who, as a fellow of COST action ECCL, will perform experiments aiming at solving this question. We are looking forward to his results.
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16.2.2009: The IAPC welcomes Nejib Hedhili
The IAPC group Swiderek welcomes a guest researcher. During the next three months, Prof. Mohammed Nejib Hedhili from Tunis will investigate electron-induced reactions of molecular precursors and thin molecular films which are relevant to the field of electron beam lithography. We are looking forward to this collaboration.
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1.1.2009: New members of the IAPC
In January 2009, Melanie Minnermann joined the IAPC as a new member of the AG Bäumer. Melanie studied Chemistry in Hannover and will investigate bimetallic catalysts for Fischer-Tropsch catalysis in her PhD project. Since November 2007, Tobias Becker, who studied physics in Osnabrück, is working on his PhD project, which is dedicated to the surface chemistry of gold and gold-silver surfaces. We welcome both in the team!
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18.11.2008: IAPC site of price winning photography
Putting science in the right perspective is an art. This is demonstrated by an exhibition at the Haus der Wissenschaft that opens today by awarding the German Price for Scientific Photography 2008. This is also a special highlight for the IAPC:
The winning photograph has been composed during a night-long session at the IAPC by the light performance artists Jan Wöllert and Jörg Miedza. An apparatus that is normally used to study electron-induced reactions for surface modification is put in a different context by the light performance and the investigating eye of the scientist. The award winning photograph as well as other contributions to the contest can be seen at the Haus der Wissenschaft until end of December.
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14.11.2008: IAPC collaborates with Institute for Ion Physics in Innsbruck
The application of electron-induced reactions for the controlled modification of surfaces and surface coatings is one of the research foci at the IAPC. The initiating reactions, however, are more easy to study in isolated, i.e. gaseous molecules than in the actual material. Such experiments are now performed as part of a newly established collaboration with the Institute for Ion Physics at the University Innsbruck. As a fellow of the COST network ECCL, IAPC member Thorben Hamann was the first to profit from this collaboration.
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20.10.2008: IAPC hosts Humboldt fellow
Currently, Prof. Cynthia Friend (Harvard University), Humboldt fellow, and her husband Prof. Bob Madix (Harvard University, formerly Stanford University) are fellows at the Hanse-Wissenschaftskolleg and visit the IAPC (AG Bäumer). Prof. Friend will give a presentation about her extensive work on Au catalysis in the Physics Colloqium on the 23rd of October. Furthermore, she will give a lecture on the 27th in the “Ringvorlesung Materialwissenschaften” about the potential of modern surface science for catalysis and material science. Guests are welcome!
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16.10.2008: Special issue of the International Journal of Mass Spectrometry
Electron-induced processes are the topic of a special issue of the International Journal of Mass Spectrometry that has now appeared and was edited by Petra Swiderek (IAPC) together with Tilmann D. Märk (Institute of Ion physics, University of Innsbruck) and Ilya Fabrikant (University of Lincoln, Nebraska). The issue highlights the wide range of phenomena related to the interaction between free electrons and molecules and demonstrates the importance of this research area. All details can be found on the homepage of the journal at http://www.sciencedirect.com/science/journal/13873806 .
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26.9.2008: Successful first IAPC workshop
Catalytic reactions occuring in condensed matter after electron-induced activation and synthesis of catalytically active nanoparticles under exposure to electron beams - these are only two examples demonstrating synergies between the research themes of the IAPC working groups. This was the result of the first IAPC-Workshop that took place September 15-19 on Rieneck castle in the Spessart mountains. The workshop was thus rated as a success by the participants.
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8.9.2008: First IAPC workshop taking place september 15-19
The Institute of Applied and Physical Chemistry holds its first workshop highlighting current research activities at Burg Rieneck (Spessart). Next week, the members of the working groups Bäumer and Swiderek will present their ongoing projects. We look forward to stimulating discussions in a pleasant setting.
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21.7.2008: IAPC investigates “sweet” nanoparticles
A diploma thesis submitted by Evgeni Jolondz investigates the synthesis of metallic nanoparticles using an aqueous solution of sugar. The particles consist of a silver or gold core and a shell of glucose. They offer a solvent free approach to the fabrication of thin nanoparticle layers on surfaces. Our congratulations to Evgeni Jolondz for successfully finishing his thesis.
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18.6.2008: Registration for ESF conference “Chemical Control with Electrons and Photons”
The precise control over chemical reactions is the subject of one of the most exciting and rapidly developing areas of modern science - introducing the potential for the creation of new materials. The use of electron and photon beams as tools for such a reaction control is the subject of an ESF research conference that is presently organized with participation of the IAPC. Scientific contributions to this meeting can be submitted until August 29.
Further information: www.esf.org/activities/esf-conferences/details/confdetail261.html?conf=261&year=2008
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30.5.2008: Tobias Nowitzki defends his thesis
Dipl.-Phys. Tobias Nowotzki, former member of the IAPC, has successfully defended his doctoral thesis on “model catalytic investigations on nanostructured gold surfaces and CoPd nanoparticles in UHV”. Congratulations!
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3.5.2008: Birte Jürgens wins poster prize of the 107. Bunsentagung!
In the final session of the “107. Bunsentagung” in Saarbrücken, Birte Jürgens, member of the IAPC, was awarded one of the three poster prizes sponsored by PCCP, one of the leading European physical chemistry journals. She prevailed over 250 competing contributions from all over Germany presented during the conference. On her poster, she presented results regarding the use of colloidal NiPt nanoparticles in catalytic applications.
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15.4.2008: Physical Chemistry and Material Science Colloquium on the move!
During the first half of this semester the Physical Chemistry and Material Science Colloquium presents a series of talks by speakers from the field of synthetic chemistry. The exciting subjects will demonstrate the important role that chemistry plays nowadays in the development of new materials. The colloquium moves to the UFT lecture hall 1790 for the next three months to accommodate all interested attendents.
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20.3.2008: Electron-induced processes in the International Journal of Mass Spectrometry
Electron-induced processes are the topic of a special issue of the International Journal of Mass Spectrometry that is presently prepared by the guest editors Petra Swiderek (IAPC), Tilmann Märk (Institute of Ion physics, University of Innsbruck), and Ilya Fabrikant (University of Lincoln, Nebraska). Authors can submit their contributions now. The issue is scheduled to appear in October 2008.
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4.2.2008: IAPC involved in new project funded by the VW foundation
Novel processes for the application of functional nanoparticular hybrid coating are the aim of the new cooperation project “Plasma hybrid coating: functional surfaces by plasma supported nano technology” funded by the VW foundation. Last week, the contributing workgroups from the Fraunhofer Institute IFAM, the University Greifswald, and the IAPC joined in Bremen for their kick-off meeting. In the framework of this project the workgroup Swiderek of the IAPC will investigate fundamental processes induced by low-energy electrons which are important constituents of plasmas and thus contribute to the modification of the coatings.
Further information: www.volkswagenstiftung.de/service/presse.html?datum=20071214
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22.1.2008: IAPC coorganizer of the DPG symposium “Bimetallic Nanosystems”
The IAPC is coorganizer of the symposium “Bimetallic Nanosystems: Tuning Physical and Chemical Properties”, which will be held in Berlin during the DPG spring meeting (25.2. - 29.2.).
The symposium aims at giving an overview over the fascinating properties of bimetallic nanoparticles, - wires and -films and possibilities to sensitively control them by the composition of the systems.
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16.1.2008: New webpages of the IAPC are online.
Starting today, the webpages of the Institute of Applied and Physical Chemistry provide even more information. Besides information on the research topics of the institute, the upcoming seminars and interesting news concerning the working groups are to be found. We hope you enjoy the visit to our pages.
