Frictional properties of alkanethiol self-assembled monolayers with different thermal annealing

被引：9

作者：

Zhang, C

Liang, Q

Wang, B

Xiao, XD ^{[1
]}

机构：

[1] Hong Kong Univ Sci & Technol, Dept Phys, Hong Kong, Hong Kong, Peoples R China

[2] Hong Kong Univ Sci & Technol, Inst Nano Sci & Technol, Hong Kong, Hong Kong, Peoples R China

来源：

JOURNAL OF APPLIED PHYSICS | 2004年 / 95卷 / 07期

关键词：

D O I：

10.1063/1.1652242

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

We have studied the thermal annealing effect on friction of alkanethiol self-assembled monolayers (SAMs) using atomic force microscopy and frictional force microscopy. The friction is found to increase with thermal annealing time once the annealing temperature is high enough. The change in friction is well correlated with the change in the SAM structure. From a densely packed (root3xroot3)R30degrees phase to a (pxroot3) stripe phase with lower density, the magnitude of friction is found to increase by similar to10 times. Such an increase in friction is proposed as being due to the less compact surface structure of the stripe phase, which opens up additional energy dissipation channels to the film. (C) 2004 American Institute of Physics.

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页码：3411 / 3416

页数：6

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