title: High-speed in situ surface X-ray diffraction studies of the electrochemical dissolution of Au(001).
abstract: We present in situ X-ray surface diffraction studies of interface processes with data acquisition rates in the millisecond regime, using the electrochemical dissolution of Au(001) in Cl-containing solution as an example. This progress in time resolution permits monitoring of atomic-scale growth and etching processes at solid-liquid interfaces at technologically relevant rates. Au etching was found to proceed via a layer-by-layer mechanism in the entire active dissolution regime up to rates of ∼20 ML/s. Furthermore, we demonstrate that information on the lateral surface morphology and in-plane lattice strain during the electrochemical process can be obtained.
authors.affiliation: Institut für Experimentelle und Angewandte Physik, Universität Kiel, Leibnizstrasse 19, 24098 Kiel, Germany.
authors.forename: Frederik
authors.initials: F
authors.lastname: Golks
authors.forename: Klaus
authors.initials: K
authors.lastname: Krug
authors.forename: Yvonne
authors.initials: Y
authors.lastname: Gründer
authors.forename: Jörg
authors.initials: J
authors.lastname: Zegenhagen
authors.forename: Jochim
authors.initials: J
authors.lastname: Stettner
authors.forename: Olaf M
authors.initials: OM
authors.lastname: Magnussen