Single-step electrochemical method for producing very sharp Au scanning tunneling microscopy tips

David Gingery, Philippe Bühlmann

Research output: Contribution to journalArticlepeer-review

24 Scopus citations

Abstract

A single-step electrochemical method for making sharp gold scanning tunneling microscopy tips is described. 3.0M NaCl in 1% perchloric acid is compared to several previously reported etchants. The addition of perchloric acid to sodium chloride solutions drastically shortens etching times and is shown by transmission electron microscopy to produce very sharp tips with a mean radius of curvature of 15 nm.

Original languageEnglish (US)
Article number113703
JournalReview of Scientific Instruments
Volume78
Issue number11
DOIs
StatePublished - 2007

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