@article{27928, author = {{Bigga, Regine}}, journal = {{Haushalt & Bildung}}, number = {{2}}, pages = {{45--52}}, title = {{{Lernen mit allen Sinnen – Lernen an vielen Orten. Tradition und Möglichkeiten des Lernens an verschiedenen Lernorten}}}, volume = {{80}}, year = {{2003}}, } @inbook{27929, author = {{Bigga, Regine and Schack, Pirjo Susanne}}, booktitle = {{Schule zwischen materieller und virtueller Lernkultur}}, editor = {{Oberliesen, Rolf and Reuel, Günther}}, pages = {{91--109}}, publisher = {{Baltmannsweiler}}, title = {{{Vorsorgendes Haushalten: Computergestützte Bewertung von Lebensmittelverarbeitung und Lebensmittelqualität}}}, year = {{2003}}, } @article{22614, author = {{de los Arcos de Pedro, Maria Teresa and Gunnar Garnier, M and Oelhafen, Peter and Mathys, Daniel and Won Seo, Jin and Domingo, Concepción and Vicente Garcı́a-Ramos, José and Sánchez-Cortés, Santiago}}, issn = {{0008-6223}}, journal = {{Carbon}}, pages = {{187--190}}, title = {{{Strong influence of buffer layer type on carbon nanotube characteristics}}}, doi = {{10.1016/j.carbon.2003.10.020}}, year = {{2003}}, } @article{22618, author = {{Garnier, M.G. and de los Arcos de Pedro, Maria Teresa and Boudaden, J. and Oelhafen, P.}}, issn = {{0039-6028}}, journal = {{Surface Science}}, pages = {{130--138}}, title = {{{Photoemission study of the iron-induced chemical reduction of silicon native oxide}}}, doi = {{10.1016/s0039-6028(03)00581-8}}, year = {{2003}}, } @article{22617, author = {{de los Arcos de Pedro, Maria Teresa and Wu, Z.M. and Oelhafen, P.}}, issn = {{0009-2614}}, journal = {{Chemical Physics Letters}}, pages = {{419--423}}, title = {{{Is aluminum a suitable buffer layer for carbon nanotube growth?}}}, doi = {{10.1016/j.cplett.2003.09.057}}, year = {{2003}}, } @inproceedings{22625, author = {{Sanz, M. M. and Domingo, Concepcion M. and de los Arcos de Pedro, Maria Teresa and Tanarro, Isabel and Herrero, Victor J.}}, booktitle = {{13th Symposium and School on High-Resolution Molecular Spectroscopy}}, editor = {{Sinitsa, Leonid N.}}, title = {{{Time-resolved FTIR absorption and emission spectroscopy of plasmas produced in low-frequency-modulated N 2 O hollow cathode discharges}}}, doi = {{10.1117/12.375373}}, year = {{2003}}, } @article{39985, author = {{Röder, T and Kitzerow, Heinz-Siegfried and Hummelen, J.C}}, issn = {{0379-6779}}, journal = {{Synthetic Metals}}, keywords = {{Materials Chemistry, Metals and Alloys, Mechanical Engineering, Mechanics of Materials, Condensed Matter Physics, Electronic, Optical and Magnetic Materials}}, number = {{3}}, pages = {{271--275}}, publisher = {{Elsevier BV}}, title = {{{Morphology and fluorescence quenching in photovoltaic samples containing fullerene and poly(p-phenylene-vinylene) derivatives}}}, doi = {{10.1016/s0379-6779(03)00412-0}}, volume = {{141}}, year = {{2003}}, } @article{38019, author = {{Christoffers, Jens and Werner, Thomas and Frey, Wolfgang and Baro, Angelika}}, issn = {{1434-193X}}, journal = {{European Journal of Organic Chemistry}}, keywords = {{Organic Chemistry, Physical and Theoretical Chemistry}}, number = {{24}}, pages = {{4879--4886}}, publisher = {{Wiley}}, title = {{{Cerium-Catalyzed Reaction ofβ-Dicarbonyl Compounds with Styrene and Atmospheric Oxygen}}}, doi = {{10.1002/ejoc.200300439}}, volume = {{2003}}, year = {{2003}}, } @article{39776, author = {{Mertens, Guido and Röder, Thorsten and Matthias, Heinrich and Marsmann, Heinrich and Kitzerow, Heinz-Siegfried and Schweizer, Stefan L. and Jamois, Cecile and Wehrspohn, Ralf B. and Neubert, Mary}}, issn = {{0003-6951}}, journal = {{Applied Physics Letters}}, keywords = {{Physics and Astronomy (miscellaneous)}}, number = {{15}}, pages = {{3036--3038}}, publisher = {{AIP Publishing}}, title = {{{Two- and three-dimensional photonic crystals made of macroporous silicon and liquid crystals}}}, doi = {{10.1063/1.1614000}}, volume = {{83}}, year = {{2003}}, } @inproceedings{39777, author = {{Hassheider, Thomas and Benning, Stephan A. and Lauhof, Marcus W. and Oesterhaus, Reinhold and Alibert-Fouet, Sonia and Bock, Harald and Goodby, John W. and Watson, Mark D. and Muellen, Klaus and Kitzerow, Heinz-Siegfried}}, booktitle = {{SPIE Proceedings}}, editor = {{Chien, Liang-Chy}}, issn = {{0277-786X}}, publisher = {{SPIE}}, title = {{{Electroluminescence and photovoltaic effects using columnar mesogenic compounds}}}, doi = {{10.1117/12.473864}}, year = {{2003}}, } @article{41300, author = {{Feth, Martin P. and Bolm, Carsten and Hildebrand, Jens P. and Köhler, Manuela and Beckmann, Oliver and Bauer, Matthias and Ramamonjisoa, Rivo and Bertagnolli, Helmut}}, issn = {{0947-6539}}, journal = {{Chemistry - A European Journal}}, keywords = {{General Chemistry, Catalysis, Organic Chemistry}}, number = {{6}}, pages = {{1348--1359}}, publisher = {{Wiley}}, title = {{{Structural Investigation of High-Valent Manganese–Salen Complexes by UV/Vis, Raman, XANES, and EXAFS Spectroscopy}}}, doi = {{10.1002/chem.200390154}}, volume = {{9}}, year = {{2003}}, } @article{42036, author = {{Schweins, Ralf and Lindner, Peter and Huber, Klaus}}, issn = {{0024-9297}}, journal = {{Macromolecules}}, keywords = {{Materials Chemistry, Inorganic Chemistry, Polymers and Plastics, Organic Chemistry}}, number = {{25}}, pages = {{9564--9573}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Calcium Induced Shrinking of NaPA Chains:  A SANS Investigation of Single Chain Behavior}}}, doi = {{10.1021/ma0347722}}, volume = {{36}}, year = {{2003}}, } @article{42037, author = {{Schweins, Ralf and Hollmann, Jutta and Huber, Klaus}}, issn = {{0032-3861}}, journal = {{Polymer}}, keywords = {{Polymers and Plastics, Materials Chemistry, Organic Chemistry}}, number = {{23}}, pages = {{7131--7141}}, publisher = {{Elsevier BV}}, title = {{{Dilute solution behaviour of sodium polyacrylate chains in aqueous NaCl solutions}}}, doi = {{10.1016/j.polymer.2003.07.005}}, volume = {{44}}, year = {{2003}}, } @article{42038, author = {{Herzog, Bernd and Huber, Klaus and Stegemeyer, Horst}}, issn = {{0743-7463}}, journal = {{Langmuir}}, keywords = {{Electrochemistry, Spectroscopy, Surfaces and Interfaces, Condensed Matter Physics, General Materials Science}}, number = {{13}}, pages = {{5223--5232}}, publisher = {{American Chemical Society (ACS)}}, title = {{{Aggregation of a Pseudoisocyanine Chloride in Aqueous NaCl Solution}}}, doi = {{10.1021/la020980w}}, volume = {{19}}, year = {{2003}}, } @article{39990, author = {{Röder, Thorsten and Kramer, Thomas and Huber, Klaus and Kitzerow, Heinz-Siegfried}}, issn = {{1022-1352}}, journal = {{Macromolecular Chemistry and Physics}}, keywords = {{Materials Chemistry, Organic Chemistry, Polymers and Plastics, Physical and Theoretical Chemistry, Condensed Matter Physics}}, number = {{18}}, pages = {{2204--2211}}, publisher = {{Wiley}}, title = {{{Preparation of Positively and Negatively Charged Organic Colloids from a Single Precursor}}}, doi = {{10.1002/macp.200300017}}, volume = {{204}}, year = {{2003}}, } @article{43290, abstract = {{A nonequilibrium occupation distribution relaxes towards the Fermi-Dirac distribution due to electron-electron scattering even in finite Fermi systems. The dynamic evolution of this thermalization process assumed to result from an optical excitation is investigated numerically by solving a Boltzmann equation for the carrier populations using a one-dimensional disordered system. We focus on the short-time-scale behavior. The logarithmically long time scale associated with the glassy behavior of interacting electrons in disordered systems is not treated in our investigation. For weak disorder and short range interaction we recover the expected result that the relaxation rate is enhanced by disorder. For sufficiently strong disorder, however, we find an opposite trend due to the reduction of scattering probabilities originating from the strong localization of the single-particle states. Long-range interaction in this regime produces a similar effect. The relaxation rate is found to scale with the interaction strength, however, the interplay between the implicit and the explicit character of the interaction produces an anomalous exponent.}}, author = {{Meier, Torsten and Varga, I. and Thomas, P. and Koch, S.W.}}, journal = {{Physical Review B}}, number = {{11}}, publisher = {{American Physical Society}}, title = {{{Dynamics of short-time-scale energy relaxation of optical excitations due to electron-electron scattering in the presence of arbitrary disorder}}}, doi = {{10.1103/PhysRevB.68.113104}}, volume = {{68}}, year = {{2003}}, } @article{43289, abstract = {{A microscopic approach is presented to compute nonlinear optical properties of semiconductor surfaces. The method uses quasiparticle wave functions and dispersions obtained from ab initio band-structure theory as an input for Bloch equations which describe the optical properties. Excitonic effects in the linear absorption spectra of the Si(111)- (2×1) surface are obtained by integrating equations of motion. To demonstrate the applicability of the approach for analyzing nonlinear optical properties, ultrafast light-intensity-dependent absorption changes of the surface exciton are predicted. The numerical results discuss the optical Stark effect and spectral oscillations of the surface exciton which can both be observed in pump-probe experiments.}}, author = {{Meier, Torsten and Reichelt, Matthias and Koch, S.W. and Rohlfing, M.}}, journal = {{Physical Review B}}, number = {{4}}, publisher = {{American Physical Society}}, title = {{{Theory for the nonlinear optical response of semiconductor surfaces: Application to the optical Stark effect and spectral oscillations of the Si(111)-(2x1) surface exciton}}}, doi = {{10.1103/PhysRevB.68.045330}}, volume = {{68}}, year = {{2003}}, } @article{43288, abstract = {{Signatures of exciton and two-exciton states in semiconductor systems are investigated experimentally and theoretically. A set of quantum well samples with different well widths is studied using coherent excitation spectroscopy. The experimental results are analyzed using a microscopic model demonstrating the importance of biexciton correlations and disorder effects. Additional numerical investigations of absorption changes in small nanorings are employed to analyze optical transitions from two-exciton to three-exciton resonances.}}, author = {{Meier, Torsten and Sieh, C. and Finger, E. and Stolz, W. and Rühle, W.W. and Koch, S.W. and Thomas, P.}}, journal = {{physica status solidi (b)}}, number = {{3}}, pages = {{537--540}}, publisher = {{WILEY‐VCH Verlag}}, title = {{{Signatures of biexcitons and triexcitons in coherent non-degenerate semiconductor optics}}}, doi = {{10.1002/pssb.200303183}}, volume = {{238}}, year = {{2003}}, } @article{23508, abstract = {{A nonequilibrium occupation distribution relaxes towards the Fermi-Dirac distribution due to electron-electron scattering even in finite Fermi systems. The dynamic evolution of this thermalization process assumed to result from an optical excitation is investigated numerically by solving a Boltzmann equation for the carrier populations using a one-dimensional disordered system. We focus on the short-time-scale behavior. The logarithmically long time scale associated with the glassy behavior of interacting electrons in disordered systems is not treated in our investigation. For weak disorder and short range interaction we recover the expected result that the relaxation rate is enhanced by disorder. For sufficiently strong disorder, however, we find an opposite trend due to the reduction of scattering probabilities originating from the strong localization of the single-particle states. Long-range interaction in this regime produces a similar effect. The relaxation rate is found to scale with the interaction strength, however, the interplay between the implicit and the explicit character of the interaction produces an anomalous exponent.}}, author = {{Varga, Imre and Thomas, Peter and Meier, Torsten and Koch, Stephan W.}}, issn = {{0163-1829}}, journal = {{Physical Review B}}, number = {{11}}, title = {{{Dynamics of short-time-scale energy relaxation of optical excitations due to electron-electron scattering in the presence of arbitrary disorder}}}, doi = {{10.1103/physrevb.68.113104}}, volume = {{68}}, year = {{2003}}, } @article{43284, abstract = {{The quantum dynamics of an ensemble of interacting electrons in an array of random scatterers is treated using a new numerical approach for the calculation of average values of quantum operators and time correlation functions in the Wigner representation. This approach combines both molecular dynamics and Monte Carlo methods and computes numerical traces and spectra of the relevant dynamical quantities such as momentum–momentum correlation functions and spatial dispersions. Considering, as an application, a system with fixed scatterers, the results clearly demonstrate that the many-particle interaction between the electrons can lead to an enhancement of the conductivity at intermediate densities.}}, author = {{Meier, Torsten and Filinov, V.S. and Thomas, P. and Varga, I. and Bonitz, M. and Fortov, V.E and Koch, S.W.}}, journal = {{Journal of Physics A: Mathematical and General}}, number = {{22}}, pages = {{5905--5911}}, publisher = {{IOP Publishing}}, title = {{{Electronic transport in a one-dimensional random array of scatterers}}}, doi = {{10.1088/0305-4470/36/22/311}}, volume = {{36}}, year = {{2003}}, }