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Atomic-scale roughness effect on capillary force in atomic force microscopy


, : Atomic-scale roughness effect on capillary force in atomic force microscopy. Journal of Physical Chemistry. B 110(2): 659-662

We study the capillary force in atomic force microscopy by using Monte Carlo simulations. Adopting a lattice gas model for water, we simulated water menisci that form between a rough silicon-nitride tip and a mica surface. Unlike its macroscopic counterpart, the water meniscus at the nanoscale gives rise to a capillary force that responds sensitively to the tip roughness. With only a slight change in tip shape, the pull-off force significantly changes its qualitative variation with humidity.

US$19.90

PMID: 16471582

DOI: 10.1021/jp056554b


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