Impact of substrate corrugation on the sliding friction levels of adsorbed films

被引：47

作者：

Coffey, T ^{[1
]}

Krim, J ^{[1
]}

机构：

[1] N Carolina State Univ, Dept Phys, Raleigh, NC 27695 USA

来源：

PHYSICAL REVIEW LETTERS | 2005年 / 95卷 / 07期

关键词：

D O I：

10.1103/PhysRevLett.95.076101

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We report a quartz crystal microbalance (QCM) study of sliding friction for solid xenon monolayers at 77 K on Cu(111), Ni(111), graphene/Ni(111), and C-60 substrates. Simulations have predicted a strong dependence of phononic friction coefficient (eta) on surface corrugation in systems with similar lattice spacing, eta proportional to U-0(2), but this has never before been shown experimentally. In order to make direct comparisons with theory, substrates with similar lattice spacing but varying amplitudes of surface corrugation were studied. QCM data reveal friction levels proportional to U-0(2), validating current theoretical and numerical predictions. Measurements of Xe/C-60 are also included for comparison purposes.

引用

页数：4

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