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Semiconductor Physics, Quantum Electronics & Optoelectronics. 2010. V. 13, N 2. P. 111-124.
Nanoprobe spectroscopy of capillary forces
and its application for a real surface diagnostics
V. Lashkaryov Institute for Semiconductor Physics, NAS of Ukraine
41, prospect Nauky, 03028 Kyiv, Ukraine,
Abstract. The paper presents an overview and analysis of the most reliable and at the
same time rather simple theoretical models describing liquid nanomeniscus geometry and
forces occurring between atomic force microscope (AFM) probe and a real surface.
There are experimental results in capillary bridge force rupture measured in air, and
interaction force under water buffer obtained over surfaces of different nature. It is
shown that the theoretical models quite adequately describe the processes observed
experimentally and, in particular, bridge ruptures dynamics at the vertical probe
withdraw for different speeds. Discussed here are some methodological peculiarities and
nanocapillary force spectroscopy diagnostic capabilities for surface energy mapping,
prospects of using of a liquid nanomeniscus in local nanochemistry, nanolithography and
nano-electrochemistry of a surface.
Keywords: capillary nanobridges, water meniscus, force-distance curves, contact angle,
wettability, adhesion, atomic force microscopy.
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