Title: Visualization of gold clusters deposited on a dithiol self-assembled monolayer by tapping mode atomic force microscopy
Authors: Vandamme, Nele ×
Snauwaert, Johan
Janssens, Ewald
Vandeweert, Erno
Lievens, Peter
Van Haesendonck, Christian #
Issue Date: Jan-2004
Publisher: Elsevier science bv
Series Title: Surface Science vol:558 issue:1-3 pages:57-64
Abstract: Tapping mode atomic force microscopy (TM-AFM) was used to characterize individual gold clusters deposited on a 1,4-benzenedimethanethiol layer. Au-n (n = 1-500) clusters were produced with a laser vaporization source and deposited with low kinetic energy (0.4 eV/atom). The free thiol group of the 1,4-benzenedimethanethiol layer gives rise to a large attractive force that inhibits reliable AFM probing of the sample with standard silicon tips. After etching the tip with hydrogen fluoride this interaction becomes repulsive and the image quality drastically improves. Tip-surface interaction measurements combined with an analysis of the cluster sizes reveal a configuration where clusters grow on top of the dithiol layer. The clusters are slightly deformed after impact and due to a strong sulfur-gold binding the cluster mobility on the layer is negligible. (C) 2004 Elsevier B.V. All rights reserved.
ISSN: 0039-6028
Publication status: published
KU Leuven publication type: IT
Appears in Collections:Solid State Physics and Magnetism Section
Chemistry - miscellaneous
Physics and Astronomy - miscellaneous
× corresponding author
# (joint) last author

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