@article{HoffmannMikaloSchmeisser, author = {Hoffmann, Patrick and Mikalo, Ricardo Pablo and Schmeißer, Dieter}, title = {Si(001) surface oxidation by N2O}, abstract = {Ultra-thin homogeneous oxynitride films are prepared on Si(001). The Si surface is cleaned in UHV by heating (flashing) and is exposed to different pressures of N2Oat altered temperatures. Thus oxynitride layers of different thickness and different properties are grown depending on the N2O pressure and the Si temperature. This isillustrated by a schematic diagram. The properties of the different oxynitride layers were studied by a combined photoemission electron microscopy (PEEM) andphotoelectron spectroscopy (PES) investigation using highly monochromatic synchrotron radiation. The amount of oxygen and nitrogen incorporated in the oxynitridelayers is determined from the PES measurements. The typical surface morphology for different preparation conditions is shown in PEEM images.}, language = {en} } @article{MikaloSchmeisser, author = {Mikalo, Ricardo Pablo and Schmeißer, Dieter}, title = {Electric contacts on conductive polymers: sodium on poly(3-hexylthiophene-2,5-diyl)}, abstract = {Sodium as a model contact with low work function on regioregular poly(3-hexylthiophene-2,5-diyl) (P3HT) films was investigated. The interface was studied by X-rayand ultraviolet photoelectron spectroscopy in the range of 0.13 up to 1.8 metal atoms per hexylthiophene unit. In the range of 0.13-0.26 sodium atoms per hexylthiophenering we find a change inthe surface potentials which is interpreted as a discharge of positive surface charges. Sodium exposures above 0.5 sodium atoms perhexylthiophene unit exhibit a reduction of the thiophene sulfur due to the formation of sodium sulfide and breaking of the thiophene ring.}, language = {en} } @misc{LewerenzAggourMurrelletal., author = {Lewerenz, Hans-Joachim and Aggour, Mohammed and Murrell, Chris and Kanis, M. and Hoffmann, Patrick and Jungblut, H. and Schmeißer, Dieter}, title = {Interface engineering of photoelectrochemically prepared Si surfaces}, abstract = {The oxide of Si(111) formed by electropolishing in dilute ammonium fluoride solution is analysed by photoelectron spectroscopy using synchrotron radiation. The oxidiclayer is about 3.1 nm thick and contains Si-F-x species as well as oxyfluorides. The oxyfluorides are found preferentially at the electropolishing layer surface. SiOHspecies are concentrated at the oxidic film/substrate interface. The full width half maximum of the Si 2p line indicates that the Si/electropolishing oxide interface issmoother than the Si/natural oxide interface.}, language = {en} } @inproceedings{LarcherEgbers, author = {Larcher, Thomas von and Egbers, Christoph}, title = {LDA-Messungen zur Untersuchung barokliner Instabilit{\"a}ten, Lasermethoden in der Str{\"o}mungsmesstechnik}, language = {de} } @article{SieberSeyllerGraupneretal., author = {Sieber, N. and Seyller, Th. and Graupner, R. and Ley, L. and Mikalo, Ricardo Pablo and Hoffmann, Patrick and Batchelor, David R. and Schmeißer, Dieter}, title = {Wet-chemical preparation of silicate adlayer reconstructed SiC(0001) surfaces as studied by PIES and LEED}, abstract = {We have studied the surface chemistry of 6H-SiC(0001) and 6H-SiC (000 (1) over bar) after wet-chemical treatment using photoelectron spectroscopy (PES) andlow-energy electron diffraction (LEED). The origin of chemically shifted components in the Si2p and C1s spectra is discussed in the light of previous studies onwet-chemically prepared surfaces and on silicate adlayer reconstructed surfaces. On 6H-SiC(0001) an ordered silicate adlayer was prepared by etching the surface withsulfuric acid based agents.}, language = {en} } @inproceedings{Egbers, author = {Egbers, Christoph}, title = {Simulation of Geophysical Fluid Flows under Microgravity (GeoFlow): Flow diagnostics and experiment concept for Fluid Science experiments}, series = {Proceedings of 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 8-11th July 2002}, booktitle = {Proceedings of 11th International Symposium on Applications of Laser Techniques to Fluid Mechanics, Lisbon, 8-11th July 2002}, pages = {5}, language = {en} } @inproceedings{Futterer, author = {Futterer, Birgit}, title = {Minimierung von Diskretisierungsfehlern bei gitterunabh{\"a}ngiger Elektrodenpositionierung}, series = {62. Jahrestagung der Deutschen Geophysikalischen Gesellschaft im Jahr der Geowissenschaften}, booktitle = {62. Jahrestagung der Deutschen Geophysikalischen Gesellschaft im Jahr der Geowissenschaften}, publisher = {Deutsche Geophysikalische Gesellschaft}, address = {Hannover}, language = {de} } @incollection{RollandArnold, author = {Rolland, Wolfgang and Arnold, Ingolf}, title = {Anthropogene Ver{\"a}nderungen des Wasserhaushaltes der Spree vom 15. bis 19. Jahrhundert}, series = {Die Niederlausitz vom 18. Jahrhundert bis heute: eine gest{\"o}rte Kulturlandschaft?}, booktitle = {Die Niederlausitz vom 18. Jahrhundert bis heute: eine gest{\"o}rte Kulturlandschaft?}, editor = {Bayerl, G{\"u}nter}, publisher = {Waxmann}, address = {M{\"u}nster [u.a.]}, isbn = {3-8309-1197-1}, pages = {199 -- 235}, language = {de} } @article{RichterWichter, author = {Richter, Frank and Wichter, Lutz}, title = {Zur Bemessung von wasserdurchl{\"a}ssigen Pflaster- und Plattenbel{\"a}gen}, language = {de} } @inproceedings{WichterKuegler, author = {Wichter, Lutz and K{\"u}gler, Marcus}, title = {Fehlstellen in D{\"u}senstrahlk{\"o}rpern durch Inhomogenit{\"a}ten im Baugrund}, series = {Vortr{\"a}ge der Baugrundtagung 2002 in Mainz}, booktitle = {Vortr{\"a}ge der Baugrundtagung 2002 in Mainz}, publisher = {Gl{\"u}ckauf-Verlag}, address = {Essen}, isbn = {3-7739-5968-0}, pages = {99 -- 105}, language = {de} } @inproceedings{Gruenewald, author = {Gr{\"u}newald, Uwe}, title = {"Oderflut 1997" - "Weichselflut 2001" - "Elbeflut 2002"}, series = {Die Gefahrentage des DKKV Leipzig 2001/Potsdam 2002 : Dokumentation von Vortr{\"a}gen}, booktitle = {Die Gefahrentage des DKKV Leipzig 2001/Potsdam 2002 : Dokumentation von Vortr{\"a}gen}, publisher = {DKKV}, address = {Bonn}, isbn = {3-933181-30-5}, pages = {62 -- 67}, language = {de} }