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Scientific article
English

Atomic force microscopy under liquid: A comparative study of three different AC mode operations

Published inJournal of Microscopy, vol. 178, no. 1, p. 7-13
Publication date1995
Abstract

The image contrast mechanism of three newly proposed AC mode operations under liquid in three different frequency ranges is presented. They all rely on a strong repulsive force to damp the cantilever and the tip still ‘touches' the sample surface. A direct comparison of the three different modes of operation with the conventional DC mode technique using the same gold sample under isopropanol was conducted. It was found that all the three AC modes exerted a much smaller lateral force than the DC mode although the normal loads were of the same order of magnitude. The suitability of such techniques in imaging physisorbed systems on hard substrates (such as soft biological samples) and the prospect of a true non‐contact repulsive mode operation are discussed.

Citation (ISO format)
WONG, Timothy, DESCOUTS, Pierre. Atomic force microscopy under liquid: A comparative study of three different AC mode operations. In: Journal of Microscopy, 1995, vol. 178, n° 1, p. 7–13. doi: 10.1111/j.1365-2818.1995.tb03574.x
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ISSN of the journal0022-2720
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