AFM study of water meniscus formation between an AFM tip and NaCl substrate

Sergey Rozhok, Peng Sun, Richard Piner, Marya Lieberman*, Chad A. Mirkin

*Corresponding author for this work

Research output: Contribution to journalArticle

68 Scopus citations

Abstract

Water meniscus formation at the point of contact between an AFM tip and an atomically smooth NaCl substrate was experimentally studied as a function of atmospheric water content, from 70% relative humidity to ultrahigh vacuum (UHV). Meniscus formation was probed by measuring the pull-off point and evaluating the ability of the meniscus to dissolve the NaCl near the point-of-contact as a function of atmospheric water content. Hydrophilic and hydrophobic tips were studied, and although a decrease in meniscus size was observed for the hydrophobic tips, all data are consistent with both types of tips resulting in the formation of a meniscus even at 0% relative humidity.

Original languageEnglish (US)
Pages (from-to)7814-7819
Number of pages6
JournalJournal of Physical Chemistry B
Volume108
Issue number23
DOIs
StatePublished - Jun 10 2004

ASJC Scopus subject areas

  • Physical and Theoretical Chemistry
  • Surfaces, Coatings and Films
  • Materials Chemistry

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