@article{43255, abstract = {{By means of direct simulations and theoretical analysis, we study the nonlinear propagation of truncated Airy pulses in an optical fiber exhibiting both anomalous second-order and strong positive third-order dispersions (TOD). It is found that the Airy pulse first reaches a finite-size focal area as determined by the relative strength of the two dispersion terms, and then undergoes an inversion transformation such that it continues to travel with an opposite acceleration. The system notably features tight focusing if the TOD is a dominant factor. These effects are partially reduced by Kerr nonlinearity.}}, author = {{Driben, R. and Hu, Y. and Chen, Z. and Malomed, B.A. and Morandotti, R.}}, journal = {{Optics Letters}}, number = {{14}}, pages = {{2499--2501}}, title = {{{Inversion and tight focusing of Airy pulses under the action of third-order dispersion}}}, doi = {{10.1364/OL.38.002499}}, volume = {{38}}, year = {{2013}}, } @article{25954, abstract = {{The light-enhanced NO2 sensing behavior of mesoporous In2O3 is measured and interpreted by means of a new sensing model. The model aims at explaining (i) the drop in electronic resistance of n-type semiconducting In2O3 under UV light exposure, (ii) the light-enhanced reaction to oxidizing gases, and (iii) the faster reaction and regeneration in mesoporous In2O3 as compared to non-porous material. Contrary to the conventional double Schottky model the dominating factor for the change in resistance is a change of oxygen vacancy donor states (0.18 eV below the conduction band) in the bulk phase due to photoreduction, instead of chemisorption. For the faster reaction and regeneration we propose an explanation based on enhanced oxygen diffusion in the In2O3 crystal lattice, specifically dominant in the mesoporous structure. The response of ordered mesoporous In2O3 to NO2 is stronger than in case of unstructured bulk material (with an average grain size of ca. 40 nm). The reaction is significantly accelerated by illuminating the samples with UV light. However, the response of the mesoporous material is weaker in the illuminated case.}}, author = {{Wagner, Thorsten and Kohl, Claus-Dieter and Malagù, Cesare and Donato, Nicola and Latino, Mariangela and Neri, Giovanni and Tiemann, Michael}}, issn = {{0925-4005}}, journal = {{Sensors and Actuators B: Chemical}}, pages = {{488--494}}, title = {{{UV light-enhanced NO2 sensing by mesoporous In2O3: Interpretation of results by a new sensing model}}}, doi = {{10.1016/j.snb.2013.02.025}}, year = {{2013}}, } @article{25953, abstract = {{Nanostructure-related magnetic properties are investigated systematically for various mesoporous cobalt oxide (Co3O4) and cobalt ferrite (CoFe2O4) spinel phases. Synthesis of the materials by nanocasting offers the opportunity to obtain materials which are different from each other with respect to both specific surface area and crystallite size. As a result, the respective contributions of two types of interfaces, namely, “solid–gas” and “solid–solid” interfaces, to the magnetic ordering can be distinguished. Structural characterization of the porous materials by X-ray diffraction, N2 physisorption, and electron microscopy as well as investigation of the magnetic behavior (field-dependent magnetization and temperature-dependent susceptibility) are presented.}}, author = {{Haffer, Stefanie and Walther, Till and Köferstein, Roberto and Ebbinghaus, Stefan G. and Tiemann, Michael}}, issn = {{1932-7447}}, journal = {{The Journal of Physical Chemistry C}}, pages = {{24471--24478}}, title = {{{Nanostructure-Related Magnetic Properties of Various Mesoporous Cobalt Oxide and Cobalt Ferrite Spinel Phases}}}, doi = {{10.1021/jp409058t}}, year = {{2013}}, } @article{25952, abstract = {{Ordered mesoporous materials have great potential in the field of gas sensing. Today various template-assisted synthesis methods facilitate the preparation of silica (SiO2) as well as numerous metal oxides with well-defined, uniform and regular pore systems. The unique nanostructural properties of such materials are particularly useful for their application as active layers in gas sensors based on various operating principles, such as capacitive, resistive, or optical sensing. This review summarizes the basic aspects of materials synthesis, discusses some structural properties relevant in gas sensing, and gives an overview of the literature on ordered mesoporous gas sensors.}}, author = {{Wagner, Thorsten and Haffer, Stefanie and Weinberger, Christian and Klaus, Dominik and Tiemann, Michael}}, issn = {{0306-0012}}, journal = {{Chem. Soc. Rev.}}, pages = {{4036--4053}}, title = {{{Mesoporous materials as gas sensors}}}, doi = {{10.1039/c2cs35379b}}, year = {{2013}}, } @article{43258, abstract = {{We consider an effectively one-dimensional binary Bose-Einstein condensate (BEC) with nonlinear repulsive interactions and linear spin-orbit (SO) and Zeeman-splitting couplings. In the presence of the trapping harmonic-oscillator (HO) potential, we report the existence of even, odd, and asymmetric spatial modes. They feature alternating domains with opposite directions of the pseudospin, i.e., antiferromagnetic structures, which is explained by the interplay of the linear couplings, HO confinement, and repulsive self-interaction. The number of the domains is determined by the strength of the SO coupling. The modes are constructed analytically in the weakly nonlinear system. The dynamical stability of the modes is investigated by means of the Bogoliubov–de Gennes equations and direct simulations. A notable result is that the multi-domain-wall (DW) structures are stable, alternating between odd and even shapes, while the simplest single-DW structure is unstable. Thus, the system features a transition to the complex ground states under the action of the SO coupling. The addition of the Zeeman splitting transforms the odd modes into asymmetric ones via spontaneous symmetry breaking. The results suggest possibilities for switching the binary system between states with opposite (pseudo)magnetization by external fields, and realization of similar stable states and dynamical effects in solid-state and nonlinear-optical settings emulated by the SO-coupled BECs.}}, author = {{Zezyulin, D.A. and Driben, R. and Konotop, V.V. and Malomed, B.A.}}, journal = {{Physical Review A }}, number = {{1}}, title = {{{Nonlinear modes in binary bosonic condensates with pseudo–spin-orbital coupling}}}, doi = {{10.1103/PhysRevA.88.013607}}, volume = {{88}}, year = {{2013}}, } @article{43257, abstract = {{We demonstrate that trapping of dispersive waves between two optical solitons takes place when resonant scattering of the waves on the solitons leads to nearly perfect reflections. The momentum transfer from the radiation to solitons results in their mutual attraction and a subsequent collision. The spectrum of the trapped radiation can either expand or shrink in the course of the propagation, which is controlled by arranging either collision or separation of the solitons.}}, author = {{Yulin, A. V. and Driben, R. and Malomed, B.A. and Skryabin, D.V.}}, journal = {{Optics Express}}, number = {{12}}, title = {{{Soliton interaction mediated by cascaded four wave mixing with dispersive waves}}}, doi = {{10.1364/OE.21.014481}}, volume = {{21}}, year = {{2013}}, } @inproceedings{4039, abstract = {{We perform experiments on resonant second-harmonic generation from planar gold split-ring-resonator arrays under normal incidence of light as a function of the lattice constant. Optimum nonlinear conversion occurs at intermediate lattice constants.}}, author = {{Niesler, Fabian B. and Linden, Stefan and Förstner, Jens and Grynko, Yevgen and Meier, Torsten and Wegener, Martin}}, booktitle = {{Conference on Lasers and Electro-Optics 2012}}, isbn = {{9781557529435}}, keywords = {{tet_topic_shg, tet_topic_meta}}, location = {{San Jose, California United States}}, number = {{1}}, publisher = {{OSA}}, title = {{{Collective effects in second-harmonic generation from split-ring-resonator arrays}}}, doi = {{10.1364/qels.2012.qth3e.2}}, volume = {{109}}, year = {{2013}}, } @inproceedings{3961, abstract = {{Previous experimental measurements and numerical simulations give evidence of strong electric and magnetic field interaction between split-ring resonators in dense arrays. One can expect that such interactions have an influence on the second harmonic generation. We apply the Discontinuous Galerkin Time Domain method and the hydrodynamic Maxwell-Vlasov model to simulate the linear and nonlinear optical response from SRR arrays. The simulations show that dense placement of the constituent building blocks appears not always optimal and collective effects can lead to a significant suppression of the near fields at the fundamental frequency and, consequently, to the decrease of the SHG intensity. We demonstrate also the great role of the symmetry degree of the array layout which results in the variation of the SHG efficiency in range of two orders of magnitude.}}, author = {{Grynko, Yevgen and Meier, Torsten and Linden, Stefan and Niesler, Fabian B. P. and Wegener, Martin and Förstner, Jens}}, booktitle = {{Ultrafast Phenomena and Nanophotonics XVII}}, editor = {{Betz, Markus and Elezzabi, Abdulhakem Y. and Song, Jin-Joo and Tsen, Kong-Thon}}, keywords = {{tet_topic_shg, tet_topic_meta}}, pages = {{86230L--86230L--9}}, publisher = {{SPIE}}, title = {{{Optimal second-harmonic generation in split-ring resonator arrays}}}, doi = {{10.1117/12.2003279}}, volume = {{8623}}, year = {{2013}}, } @inproceedings{36892, author = {{Gramzow, Yvonne and Riese, Josef and Reinhold, Peter }}, booktitle = {{Inquiry-based Learning – Forschendes Lernen}}, editor = {{Bernholt, Sascha}}, pages = {{527--529}}, publisher = {{IPN}}, title = {{{Innere Struktur und Operationalisierung Fachdidaktischen Wissens}}}, year = {{2013}}, } @article{35498, author = {{Gramzow, Yvonne and Riese, Josef and Reinhold, Peter}}, journal = {{ZfDN (Zeitschrift für Didaktik der Naturwissenschaften)}}, pages = {{7--30}}, title = {{{Modellierung fachdidaktischen Wissens angehender Physiklehrkräfte}}}, volume = {{19}}, year = {{2013}}, } @article{44969, author = {{Brehm, Martin and Weber, H. and Pensado, A. S. and Stark, A. and Kirchner, B.}}, journal = {{Z. Phys. Chem.}}, pages = {{177--203}}, title = {{{Liquid Structure and Cluster Formation in Ionic Liquid/Water Mixtures – An Extensive ab initio Molecular Dynamics Study on 1-Ethyl-3-Methylimidazolium Acetate/Water Mixtures – Part 2}}}, doi = {{10.1524/zpch.2012.0327}}, volume = {{227}}, year = {{2013}}, } @article{44971, author = {{Malberg, F. and Brehm, Martin and Hollóczki, O. and Pensado, A. S. and Kirchner, B.}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{18424--18436}}, title = {{{Understanding the Evaporation of Ionic Liquids using the Example of 1-Ethyl-3-Methylimidazolium Ethylsulfate}}}, doi = {{10.1039/C3CP52966E}}, volume = {{15}}, year = {{2013}}, } @article{44968, author = {{Hollóczki, O. and Firaha, D. S. and Friedrich, J. and Brehm, Martin and Cybik, R. and Wild, M. and Stark, A. and Kirchner, B.}}, journal = {{J. Phys. Chem. B}}, pages = {{5898--5907}}, title = {{{Carbene Formation in Ionic Liquids: Spontaneous, Induced, or Prohibited?}}}, doi = {{10.1021/jp4004399}}, volume = {{117 (19)}}, year = {{2013}}, } @article{44970, author = {{Thomas, M. and Brehm, Martin and Fligg, R. and Vöhringer, P. and Kirchner, B.}}, journal = {{Phys. Chem. Chem. Phys.}}, pages = {{6608--6622}}, title = {{{Computing Vibrational Spectra from ab initio Molecular Dynamics}}}, doi = {{10.1039/C3CP44302G}}, volume = {{15}}, year = {{2013}}, } @inbook{45507, author = {{Riese, Josef and Borowski, Andreas and Fischer, Hans E. and Gramzow, Yvonne and Kulgemeyer, Christoph and Reinhold, Peter and Schecker, Horst and Tomczyszyn, Elisabeth and Walzer, Martin}}, booktitle = {{KoKoHs Working Papers 3}}, editor = {{Blömeke, Sigrid and Zlatkin- Troitschanskaia, Olga}}, title = {{{Professional knowledge of physics student teachers – ProfiLe-P}}}, year = {{2013}}, } @inproceedings{45525, author = {{Woitkowski, David and Riese, Josef and Reinhold, Peter}}, booktitle = {{Inquiry-based Learning – Forschendes Lernen. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hannover 2012}}, editor = {{Bernholt, Sascha}}, pages = {{245--247}}, title = {{{Fachwissen Physik – Innere Struktur und Faktoren des Wissenserwerbs}}}, year = {{2013}}, } @inproceedings{45524, author = {{Krumphals, Ingrid and Riese, Josef and Hopf, Martin and Reinhold, Peter}}, booktitle = {{Inquiry-based Learning – Forschendes Lernen. Gesellschaft für Didaktik der Chemie und Physik. Jahrestagung in Hannover 2012}}, editor = {{Bernholt, Sascha}}, pages = {{515--517}}, title = {{{Wirksamkeit der Physiklehrerausbildung in Österreich}}}, year = {{2013}}, } @article{45769, author = {{Kühne, Thomas D. and Khaliullin, Rustam Z.}}, journal = {{Nature Commun.}}, title = {{{Electronic signature of the instantaneous asymmetry in the first coordination shell of liquid water}}}, volume = {{4}}, year = {{2013}}, } @article{46712, author = {{Güldenpenning, Iris and Steinke, Andreas and Koester, Dirk and Schack, Thomas}}, journal = {{Experimental Brain Research}}, pages = {{333–343}}, publisher = {{Springer}}, title = {{{Athletes and novices are differently capable to recognize feint and non-feint actions}}}, doi = {{https://doi.org/10.1007/s00221-013-3658-2}}, volume = {{230}}, year = {{2013}}, } @inproceedings{46876, author = {{Schütz, Christoph and Güldenpenning, Iris and Schack, Thomas}}, booktitle = {{Abstracts of the 55th Conference of Experimental Psychologists (TeaP)}}, editor = {{Ansorg, U. and Kirchler, E. and Lamm, C. and Leder, H.}}, location = {{Wien}}, pages = {{259}}, publisher = {{Pabst Science Publishers}}, title = {{{Unconscious, incongruent primes initiate invalid motor actions}}}, doi = {{https://doi.org/10.23668/psycharchives.880}}, year = {{2013}}, }