@inproceedings{WehnerHofmannSchmeisseretal., author = {Wehner, Stefan and Hofmann, Patrick and Schmeißer, Dieter and Brand, Helmut R. and K{\"u}ppers, J{\"u}rgen}, title = {Pattern formation in the CO + O reaction on Ir(111) surfaces under the influence of noise}, series = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Reihe 6, Bd. 41}, booktitle = {Verhandlungen der Deutschen Physikalischen Gesellschaft, Reihe 6, Bd. 41}, publisher = {Deutsche Physikalische Gesellschaft}, address = {Bad Honnef}, issn = {0420-0195}, pages = {S. 708}, abstract = {The rate of CO oxidation on Ir(111) surfaces exhibits bistability at T = 500 K in a range of the CO fraction Y in the CO + O reactant gas flux. Quadrupol mass spectrometer measurements of the CO2 rates as a function of the noise strength imposed on Y are well reproduced by parameter-free modeling. We present Photoelectron emission microscopy (PEEM) measurements and 2D calculations of the spatio-temporal patterns of CO and O rich domains. The role of combined multiplicative and additive noise on Y for CO and O domain wall motion and island nucleation-growth-coalescence processes is analysed. For small noise amplitudes few islands nucleate and grow up to some 100 µ m in diameter, before they merge with another island. With increasing noise amplitudes more islands nucleate. With large noise amplitudes bursts to and switching between the branches is observed. The domain wall velocity is found to be independent of the noise strength and island size.}, language = {en} } @techreport{GaetschGreitzerStalmannetal., author = {G{\"a}tsch, C{\"a}cilia and Greitzer, Maria and Stalmann, Benita and Genge, Lucien and Ohle, Leony and Reichenberger, Lukas and Bruns, Tim and B{\"u}sen, Klaas and Hauser, Philipp and Arndt, Tabea and Hofmann, Joshua Thibaud and Grote, Monja and Specht, Patrick and Frank, Daniel}, title = {H2-Beschleunigungsgesetz: Regulatorische Maßnahmen zur Beschleunigung des Ausbaus von H2-Importterminals}, publisher = {cruh21 GmbH}, address = {Berlin}, doi = {10.24406/publica-1509}, pages = {18}, language = {de} }