@article{42044, author = {{Huber, Klaus and Scheler, Ulrich}}, issn = {{1359-0294}}, journal = {{Current Opinion in Colloid & Interface Science}}, keywords = {{Colloid and Surface Chemistry, Polymers and Plastics, Physical and Theoretical Chemistry, Surfaces and Interfaces}}, number = {{2}}, pages = {{64--73}}, publisher = {{Elsevier BV}}, title = {{{New experiments for the quantification of counterion condensation}}}, doi = {{10.1016/j.cocis.2012.01.005}}, volume = {{17}}, year = {{2012}}, } @inbook{25960, abstract = {{We report on sensing properties of ordered mesoporous nanostructures of In2O3 synthesized by nanocasting procedure towards NO2. The nanostructured material shows improved recover times and higher responses compared to non nanostructured material at low operating temperatures (100–150°C) thus allowing the use for low power NO2 sensors. These properties may be related to fast oxygen in and out propagation facilitated by an enhanced surface accessibility of the nanostructure.}}, author = {{Donato, Nicola and Wagner, Thorsten and Tiemann, Michael and Waitz, Thomas and Kohl, Claus-Dieter and Latino, Mariangela and Neri, Giovanni and Spadaro, Donatella and Malagù, Cesare}}, booktitle = {{Lecture Notes in Electrical Engineering}}, issn = {{1876-1100}}, title = {{{NO2 Sensors with Reduced Power Consumption Based on Mesoporous Indium Oxide}}}, doi = {{10.1007/978-1-4614-0935-9_10}}, year = {{2012}}, } @article{25956, abstract = {{A model is proposed for the drop in electronic resistance of n-type semiconducting indium oxide (In2O3) upon illumination with light (350 nm, 3.5 eV) as well as for the (light-enhanced) sensitivity of In2O3 to oxidizing gases. Essential features of the model are photoreduction and a rate-limiting oxygen-diffusion step. Ordered, mesoporous In2O3 with a high specific surface area serves as a versatile system for experimental studies. Analytical techniques comprise conductivity measurements under a controlled atmosphere (synthetic air, pure N2) and temperature-resolved in-situ Fourier transform infrared (FTIR) spectroscopy. IR measurements reveal that oxygen vacancies form a donor level 0.18 eV below the conduction band.}}, author = {{Wagner, Thorsten and Kohl, Claus-Dieter and Morandi, Sara and Malagù, Cesare and Donato, Nicola and Latino, Mariangela and Neri, Giovanni and Tiemann, Michael}}, issn = {{0947-6539}}, journal = {{Chemistry - A European Journal}}, pages = {{8216--8223}}, title = {{{Photoreduction of Mesoporous In2O3: Mechanistic Model and Utility in Gas Sensing}}}, doi = {{10.1002/chem.201103905}}, year = {{2012}}, } @article{25957, abstract = {{Poröse Funktionsmaterialien wie halbleitende Metalloxide, Kohlenstoff-Formen oder auch Silica werden aktuell von verschiedenen Wissenschaftsdisziplinen intensiv für Bereiche der Energiespeicherung, Sensorik, Katalyse und Stofftrennung erforscht. Im Beitrag werden schwerpunktmäßig geordnet-mesoporöse Silica-Materialien behandelt, die seit etwa 20 Jahren synthetisch zugänglich sind. Neben den Grundlagen der Herstellung über ein Templat-Verfahren werden im Beitrag auch drei Experimente vorgestellt, die im Chemieunterricht oder Schülerlabor durchgeführt werden können. Zudem wird gezeigt, dass sich verschiedene Aspekte aus dem Kompetenzbereich Fachwissen mit Hilfe des Themas „Mesoporöse Silica“ miteinander vernetzen lassen.}}, author = {{Wilke, Timm and Haffer, Stefanie and Tiemann, Michael and Waitz, Thomas}}, issn = {{0944-5846}}, journal = {{CHEMKON}}, pages = {{67--72}}, title = {{{Mesoporöse Silica - Moderne Funktionsmaterialien im Chemieunterricht}}}, doi = {{10.1002/ckon.201210170}}, year = {{2012}}, } @article{25955, abstract = {{Crystalline, mesoporous alumina (Al2O3) materials with specific surface areas up to 400 m2 g–1 have been synthesized by means of structure replication (nanocasting) using CMK-8 carbon as a structure matrix. A crucial step during this synthesis procedure is the conversion of aluminum nitrate into aluminum hydroxide by treatment with ammonia vapor. The impact of this step was investigated in some detail. Prolonged vapor treatment has a positive impact on the crystallinity of the final Al2O3 products but at the same time leads to loss of mesoscopic structural order and porosity.}}, author = {{Haffer, Stefanie and Weinberger, Christian and Tiemann, Michael}}, issn = {{1434-1948}}, journal = {{European Journal of Inorganic Chemistry}}, pages = {{3283--3288}}, title = {{{Mesoporous Al2O3 by Nanocasting: Relationship between Crystallinity and Mesoscopic Order}}}, doi = {{10.1002/ejic.201200131}}, year = {{2012}}, } @inproceedings{3980, abstract = {{Paper Abstract High harmonic generation is investigated for a two-band model of a semiconductor nanostructure. Similar to an atomic two-level system, the semiconductor emits high harmonic radiation. We show how one can specifically enhance the emission for a given frequency by applying a non-trivially shaped laser pulse. Therefore, the semiconductor Bloch equations including the interband and additionally the intraband dynamics are solved numerically and the spectral shape of the input pulse is computed via an optimization algorithm. It is demonstrated that desired emission frequencies can be favored even though the overall input power is kept constant. We also suggest special metallic nano geometries to achieve enhanced localized optical fields. They are found by geometric optimization.}}, author = {{Reichelt, Matthias and Hildebrandt, Andre and Walther, Andrea and Förstner, Jens and Meier, Torsten}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XVI}}, isbn = {{9780819489036 }}, keywords = {{tet_topic_shg}}, publisher = {{SPIE}}, title = {{{Engineering high harmonic generation in semiconductors via pulse shaping}}}, doi = {{10.1117/12.906338}}, volume = {{8260}}, year = {{2012}}, } @article{22953, abstract = {{The generation of specific high harmonics for an optical two-level system is elucidated. The desired emitted radiation can be induced by a carefully designed excitation pulse, which is found by a multiparameter optimization procedure. The presented mechanism can also be applied to semiconductor structures for which the calculations result in much higher emission frequencies. The optimization procedure is either performed using a genetic algorithm or a rigorous mathematical optimization technique.}}, author = {{Reichelt, Matthias and Walther, Andrea and Meier, Torsten}}, issn = {{0740-3224}}, journal = {{Journal of the Optical Society of America B}}, number = {{2}}, title = {{{Tailoring the high-harmonic emission in two-level systems and semiconductors by pulse shaping}}}, doi = {{10.1364/josab.29.000a36}}, volume = {{29}}, year = {{2012}}, } @article{44963, author = {{Pensado, A. S. and Brehm, Martin and Thar, J. and Seitsonen, A. P. and Kirchner, B.}}, journal = {{ChemPhysChem}}, pages = {{1845--1853}}, title = {{{Effect of Dispersion on the Structure and Dynamics of the Ionic Liquid 1-Ethyl-3-Methylimidazolium Thiocyanate}}}, doi = {{10.1002/cphc.201100917}}, volume = {{13 (7)}}, year = {{2012}}, } @article{44965, author = {{Wendler, K. and Brehm, Martin and Malberg, F. and Kirchner, B. and Site, L. Delle}}, journal = {{J. Chem. Theory Comput.}}, pages = {{1570--1579}}, title = {{{Short Time Dynamics of Ionic Liquids in AIMD-Based Power Spectra}}}, doi = {{10.1021/ct300152t}}, volume = {{8 (5)}}, year = {{2012}}, } @article{44967, author = {{Brüssel, M. and Perlt, E. and von Domaros, M. and Brehm, Martin and Kirchner, B.}}, journal = {{J. Chem. Phys.}}, pages = {{164107}}, title = {{{A One-Parameter Quantum Cluster Equilibrium Approach}}}, doi = {{10.1063/1.4759154}}, volume = {{137}}, year = {{2012}}, } @article{44964, author = {{Brehm, Martin and Weber, H. and Pensado, A. S. and Stark, A. and Kirchner, B.}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{5030--5044}}, title = {{{Proton Transfer and Polarity Changes in Ionic Liquid–Water Mixtures: A Perspective on Hydrogen Bonds from ab initio Molecular Dynamics at the Example of 1-Ethyl-3-Methylimidazolium Acetate–Water Mixtures—Part 1}}}, doi = {{10.1039/C2CP23983C}}, volume = {{14}}, year = {{2012}}, } @article{44966, author = {{Brüssel, M. and Brehm, Martin and Pensado, A. S. and Malberg, F. and Ramzan, M. and Stark, A. and Kirchner, B.}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{13204--13215}}, title = {{{On the Ideality of Binary Mixtures of Ionic Liquids}}}, doi = {{10.1039/C2CP41926B}}, volume = {{14}}, year = {{2012}}, } @article{45287, author = {{Riese, Josef and Reinhold, Peter}}, issn = {{1434-663X}}, journal = {{Zeitschrift für Erziehungswissenschaft}}, keywords = {{Education}}, number = {{1}}, pages = {{111--143}}, publisher = {{Springer Science and Business Media LLC}}, title = {{{Die professionelle Kompetenz angehender Physiklehrkräfte in verschiedenen Ausbildungsformen}}}, doi = {{10.1007/s11618-012-0259-y}}, volume = {{15}}, year = {{2012}}, } @inbook{45286, author = {{Riese, Josef and Reinhold, Peter}}, booktitle = {{Formate Fachdidaktischer Forschung. Empirische Projekte – historische Analysen – theoretische Grundlegungen}}, editor = {{Bayrhuber, Horst and Harms, Ute and Muszynski, Bernhard and Ralle, Bernd and Rothnagel, Martin and Schön, Lutz-Helmut and Vollmer, Helmut Johanes and Weigand, Hans-Georg}}, pages = {{297--314}}, publisher = {{Waxmann}}, title = {{{Kompetenzen von Lehramtsstudierenden in Physik}}}, year = {{2012}}, } @inproceedings{35486, author = {{Gramzow, Yvonne and Riese, Josef and Reinhold, Peter}}, booktitle = {{Konzepte fachdidaktischer Strukturierung für den Unterricht }}, editor = {{Bernholt, Sascha}}, pages = {{619--621}}, publisher = {{LIT Verlag}}, title = {{{Fachdidaktisches Wissen von Lehramtsstudierenden und Lehrenden an der Hochschule im Fach Physik}}}, year = {{2012}}, } @inproceedings{45532, author = {{Woitkowski, David and Riese, Josef and Reinhold, Peter}}, booktitle = {{Konzepte fachdidaktischer Strukturierung für den Unterricht. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Oldenburg 2011}}, editor = {{Bernholt, Sascha}}, pages = {{283--285}}, title = {{{Kompetenzmodellierung und –messung des Fachwissens im Physikstudium}}}, year = {{2012}}, } @inproceedings{45531, author = {{Vogelsang, Christoph and Riese, Josef and Reinhold, Peter}}, booktitle = {{Konzepte fachdidaktischer Strukturierung für den Unterricht. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Oldenburg 2011}}, editor = {{Bernholt, Sascha}}, pages = {{286--288}}, title = {{{Gemessene Kompetenz und Unterrichtsqualität}}}, year = {{2012}}, } @inproceedings{45527, author = {{Kulgemeyer, Christoph and Borowski, Andreas and Fischer, Hans and Gramzow, Yvonne and Reinhold, Peter and Riese, Josef and Schecker, Horst and Tomczyszy, Elisabeth }}, booktitle = {{PhyDid B, Didaktik der Physik, Beiträge zur DPG-Frühjahrstagung 2012 in Mainz}}, editor = {{Nordmeier, Volkhard and Grötzebauch, Helmuth}}, title = {{{ProfiLe-P – Professionswissen in der Lehramtsausbildung Physik. Vorstellung eines Forschungsprojekts}}}, year = {{2012}}, } @inproceedings{45526, author = {{Riese, Josef and Vogelsang, Christoph and Reinhold, Peter}}, booktitle = {{E-Book Proceedings of the ESERA 2011 Conference: Science learning and Citizenship. Part 13: Pre-service science teacher education}}, editor = {{Bruguiere, Catherine and Tiberghien, Andrée and Clément, Pierre}}, pages = {{159--166}}, title = {{{Pre-service physics teachers‘ pedagogical content knowledge in different teacher education programs}}}, year = {{2012}}, } @inproceedings{45528, author = {{Riese, Josef and Reinhold, Peter and Vogelsang, Christoph and Woitkowski, David}}, booktitle = {{Konzepte fachdidaktischer Strukturierung für den Unterricht. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Oldenburg 2011}}, editor = {{Bernholt, Sascha}}, pages = {{278--279}}, title = {{{Empirische Erkenntnisse zur Ausbildung zu-künftiger Physiklehrkräfte}}}, year = {{2012}}, }