Relationship between friction and molecular structure: Alkylsilane lubricant films under pressure

被引：136

作者：

Barrena, E ^{[1
]}

Kopta, S ^{[1
]}

Ogletree, DF ^{[1
]}

Charych, DH ^{[1
]}

Salmeron, M ^{[1
]}

机构：

[1] Univ Calif Berkeley, Lawrence Berkeley Lab, Div Mat Sci, Berkeley, CA 94720 USA

来源：

PHYSICAL REVIEW LETTERS | 1999年 / 82卷 / 14期

关键词：

D O I：

10.1103/PhysRevLett.82.2880

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We demonstrate that energy losses during friction of alkylsilane self-assembled monolayers with sharp atomic force microscope tips can be correlated to molecular events occurring at specific threshold loads. Under these lends, discrete molecular tilts occur, which are dictated by the geometrical requirements of the close packing of molecules. The barriers overcome during these tilt events give rise to discrete changes in the frictional forces. [S0031-9007(99)05798-0].

引用

页码：2880 / 2883

页数：4

共 20 条

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