@misc{BeyerKrauseMethfesseletal., author = {Beyer, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus and Lunn, A. S.}, title = {Verfahren f{\"u}r drahtlosen Handover bei Datenstr{\"o}men {\"u}ber WLAN Systeme}, language = {de} } @inproceedings{KrauseKrautzLehmannetal., author = {Krause, S. and Krautz, Hans Joachim and Lehmann, J. and Luschtinetz, Thomas and Kruse, T.}, title = {Operating regime of a hydrogen-storage-loop power plant of grid relevant dimensions}, series = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, booktitle = {Proceedings of the 14th International Symposium on Heat Transfer and Renewable Sources of Energy, Szczecin-Miedzyzdroje, Poland, September 06-09, 2012}, publisher = {Wydawnistwo Uczelnianie ZUT}, address = {Szczecinie}, isbn = {978-83-7663-121-9}, language = {en} } @misc{BaerSchubertMarsenetal., author = {B{\"a}r, Marcus and Schubert, Bj{\"o}rn-Arvid and Marsen, Bj{\"o}rn and Wilks, Regan G. and Blum, M. and Krause, S. and Pookpanratana, Sujitra and Zhang, Y. and Unold, Thomas and Yang, W. and Weinhardt, Lothar and Heske, Clemens and Schock, Hans-Werner}, title = {Cu2ZnSnS4 thin-film solar cell absorbers illuminated by soft x-rays}, series = {Journal of Materials Research}, volume = {27}, journal = {Journal of Materials Research}, number = {8}, issn = {2044-5326}, doi = {10.1557/jmr.2012.59}, pages = {1097 -- 1104}, abstract = {In view of the complexity of thin-film solar cells, which are comprised of a multitude of layers, interfaces, surfaces, elements, impurities, etc., it is crucial to characterize and understand the chemical and electronic structure of these components. Because of the high complexity of the Cu2ZnSn(S,Se)4 compound semiconductor absorber material alone, this is particularly true for kesterite-based devices. Hence, this paper reviews our recent progress in the characterization of Cu2ZnSnS4 (CZTS) thin films. It is demonstrated that a combination of different soft x-ray spectroscopies is an extraordinarily powerful method for illuminating the chemical and electronic material characteristics from many different perspectives, ultimately resulting in a comprehensive picture of these properties. The focus of the article will be on secondary impurity phases, electronic structure, native oxidation, and the CZTS surface composition.}, language = {en} } @misc{MirskyMassKrauseetal., author = {Mirsky, Vladimir M. and Mass, Markus and Krause, Christian and Wolfbeis, Otto S.}, title = {Capacitive approach to determine phospholipase A2 activity towards artificial and natural substrates}, series = {Analytical Chemistry}, volume = {70}, journal = {Analytical Chemistry}, number = {17}, issn = {0003-2700}, doi = {10.1021/ac980102w}, pages = {3674 -- 3678}, abstract = {A capacitive approach has been employed to develop a novel method to determine phospholipase activity. The sensing electrodes have a structure like Au/S(CH₂)₁₇CH₃/substrate/electrolyte. Hydrolysis of the substrate, mediated by phospholipase A₂, leads to the formation of water-soluble products from the insoluble substrate. This results in desorption of these products into aqueous phase and corresponding increase of the electrode capacitance. The requirement of high water solubility of the reaction products can be achieved in two ways. In the first, short-chain phospholipids are used as the substrate, in which case, water-soluble products are formed and no additional reagents are required to promote desorption of these products. The sensors prepared by this strategy provide sensitive qualitative detection of phospholipases. The second way is based on the use of a water-soluble acceptor (for example, β-cyclodextrin) to solubilize the products of hydrolysis. It allows semiquantitative detection of phospholipase activity toward long-chain natural substrates. The reaction kinetics for this case was found to be monoexponential and linearly dependent on the phospholipase concentration. The detection limit of this method, as tested with phospholipase A₂ from bee venom and soy bean lecithin as the substrate, is ∼0.5 ng/mL (500 μunits/mL).}, language = {en} } @misc{MirskyRieplKrauseetal., author = {Mirsky, Vladimir M. and Riepl, Michael and Krause, Christian and Novotny, Ivan and Splonskowski, Markus and Rehacek, Vlastimil and Tvarozek, Vladimir and Hummel, Helmut and Wolfbeis, Otto S.}, title = {Thin film electrodes for capacitive chemo- and biosensors: an optimization of the electrodes geometry}, series = {Materials Science Forum}, volume = {287-288}, journal = {Materials Science Forum}, issn = {1662-9752}, doi = {10.4028/www.scientific.net/MSF.287-288.423}, pages = {423 -- 426}, language = {en} } @misc{SullivanWilksWinkleretal., author = {Sullivan, J. T. and Wilks, Regan G. and Winkler, M. T. and Weinhardt, Lothar and Recht, D. and Said, A. J. and Newman, B. K. and Zhang, Y. and Blum, Monika and Krause, S. and Yang, Wan Li and Heske, Clemens and Aziz, M. J. and B{\"a}r, Marcus and Buonassisi, T.}, title = {Soft x-ray emission spectroscopy studies of the electronic structure of silicon supersaturated with sulfur}, abstract = {We apply soft x-ray emission spectroscopy (XES) to measure the electronic structure of crystalline silicon supersaturated with sulfur (up to 0.7 at. \%), a candidate intermediate-band solar cell material. Si L2,3 emission features are observed above the conventional Si valence band maximum, with intensity scaling linearly with S concentration. The lineshape of the S-induced features change across the insulator-to-metal transition, indicating a significant modification of the local electronic structure concurrent with the change in macroscopic electronic behavior. The relationship between the Si L2,3 XES spectral features and the anomalously high sub-band gap infrared absorption is discussed.}, language = {en} } @inproceedings{ZiemsTannertTillmannetal., author = {Ziems, Christian and Tannert, Daniel and Tillmann, Christine and Kr{\"u}ger, Perco and Krause, S. and Krautz, Hans Joachim}, title = {Untersuchungen zur fortschrittlichen alkalischen Druckelektrolyse am Wasserstoff-Forschungszentrum Cottbus}, language = {de} } @inproceedings{KrauseTillmannKrautzetal., author = {Krause, S. and Tillmann, Christine and Krautz, Hans Joachim and Miege, A. and Lehmann, J. and Sch{\"u}nemann, G.}, title = {Wasserstoffspeicherkraftwerk - Betrachtungen zur Wirtschaftlichkeit}, language = {de} } @misc{BeckerKrauseMethfesseletal., author = {Becker, T. and Krause, F.-M. and Methfessel, Michael and Tittelbach-Helmrich, Klaus and Lunn, A. S.}, title = {Verfahren f{\"u}r drahtlosen Handover bei Datenstr{\"o}men {\"u}ber WLAN Systeme}, language = {de} } @techreport{SpegelReinhardtCheethametal., author = {Spegel, M. and Reinhardt, P. and Cheetham, B. and Lunn, A. S. and Krause, F.-M. and Tittelbach-Helmrich, Klaus}, title = {Final System Performance and Validation Report}, language = {en} } @techreport{SpegelLunnKrauseetal., author = {Spegel, M. and Lunn, A. S. and Krause, F.-M. and Wellhausen, T. and Tittelbach-Helmrich, Klaus and Reinhardt, P. and Cheetham, B.}, title = {506746 - WINDECT STP D2.2 Technical Specification of 173, Demonstration System}, language = {en} } @techreport{LunnTittelbachHelmrichKrauseetal., author = {Lunn, A. S. and Tittelbach-Helmrich, Klaus and Krause, F.-M. and Becker, T. and Cheetham, B. and Kuhn, M. and Methfessel, Michael and Ettafagh, A. and Secall, M. and Spegel, M.}, title = {Design of PAL and Voice Optimisation for WLAN}, language = {en} }