Creating nanoscale pits on solid surfaces in aqueous environment with scanning tunnelling microscopy

Letter

Authors/Editors

Andersen, Jens

Research Areas

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Publication Details

Author list: Chi QJ, Zhang JD, Friis EP, Andersen JET, Ulstrup J

Publisher: ELSEVIER SCIENCE BV

Place: AMSTERDAM

Publication year: 2000

Journal acronym: SURF SCI

Volume number: 463

Issue number: 2

Start page: L641

End page: L648

Number of pages: 8

ISSN: 0039-6028

eISSN: 1879-2758

Languages: English-Great Britain (EN-GB)

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Abstract

A novel method has been developed to fabricate nanoscale pits on Au(111) in aqueous environments by in situ scanning tunnelling microscopy (STM), based on critical interactions between tip and substrate. The most striking advantages of the present method are that the dimension and position of the pits can be controlled well in aqueous environments, and the operations are simple. Parameters affecting the pit formation and size have been systematically characterized to show that pit formation is dominated by bias voltage. A mechanism is proposed based on local surface reconstruction induced by electronic contact between tip and substrate. (C) 2000 Elsevier Science B.V. All rights reserved.

Keywords

and topography, electrochemical methods, morphology, roughness, scanning tunneling microscopy, surface structure

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