Tip-induced nanostructuring of alloy surfaces with an electrochemical scanning t

2019-09-11 20:05:39

alloy formation induced surfaces tip

责任者: Maupai, S.;Dakkouri, A.S.;Schmuki, P. 单位: Department of Materials Science, University of Erlangen-Nuremberg, D-91058 Erlangen, Germany 来源出处: Surface Science,2005,597(1-3):20-25 摘要: Tip-induced nanostructuring with an electrochemical scanning tunneling microscope (EC-STM) was applied to alloy surfaces in order to resolve the reasons for the unusual stability of tip-induced metal clusters to anodic oxidation. Therefore Au thin films on glass and AuCu-alloy single crystals of different composition and surface orientation were used as substrates. The experiments give evidence that the three main factors for cluster formation and stability are the attractive interaction between tip and substrate, alloy formation during the cluster formation process as well as additional stabilization by adsorption of an underpotential deposition layer. Experimental results on the three aspects are presented and discussed. © 2005 Elsevier B.V. All rights reserved. 关键词: Nanostructured materials;Alloying elements;Electrochemistry;Scanning tunneling microscopy;Single crystals;Anodic oxidation;Crystal orientation;Tip-induced deposition;Metal-electrolyte interfaces;Alloy surfaces;Metal clusters