ATOMIC FORCE MICROSCOPE STUDY OF BOUNDARY-LAYER LUBRICATION

被引：49

作者：

OSHEA, SJ ^{[1
]}

WELLAND, ME ^{[1
]}

RAYMENT, T ^{[1
]}

机构：

[1] UNIV CAMBRIDGE,DEPT CHEM,CAMBRIDGE CB2 1EW,ENGLAND

来源：

APPLIED PHYSICS LETTERS | 1992年 / 61卷 / 18期

关键词：

D O I：

10.1063/1.108254

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

An atomic force microscope is used to investigate the lubrication properties of a simple surfactant (n-dodecanol) on mica at 24-degrees-C. The liquid becomes strongly layered as it is confined between the tip and the mica and a bilayer structure was often observed. The lubrication properties of the adsorbed molecules are clearly evident in the very low friction forces observed at appreciable applied loads ( approximately 100 MPa). It is only when the last layer of molecules is removed that a significant friction signal is observed. It appears that the tip-mica interaction is dominated by adhesive forces and hence the measured friction and normal forces are strongly influenced by the effective contact area of the tip.

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页码：2240 / 2242

页数：3

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