Non-contact friction between nanostructures

Abstract

We calculate the van der Waals friction between two semi-infinite solids in normal relative motion and find a drastic difference in comparison with the parallel relative motion. The case of the good conductors is investigated in details both within the local optic approximation, and using a non-local optic dielectric approach. We show that the friction may increase by many order of magnitude when the surfaces are covered by adsorbates, or can support low-frequency surface plasmons. In this case the friction is determined by resonant photon tunneling between adsorbate vibrational modes, or surface plasmon modes. The theory is compared to atomic force microscope experimental data.

Published in PRB

References in corpus (5)

• The Hierarchy Problem and New Dimensions at a Millimeter
• Precision Measurement of the Casimir Force from 0.1 to 0.9 microns
• Radiative heat transfer between nanostructures
• Theory of friction: contribution from fluctuating electromagnetic field
• Dissipative Van der Waals interaction between a small particle and a metal surface

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