Effect of sidewall modification in the determination of friction coefficient of vertically aligned carbon nanotube films using friction force microscopy

被引：19
|
作者：
Ler, J. G. Q. [1 ]
Hao, Yufeng [1 ]
Thong, J. T. L. [1 ]
机构：
[1] Natl Univ Singapore, Dept Elect & Comp Engn, Singapore 117576, Singapore
来源：
CARBON | 2007年 / 45卷 / 14期
关键词：
D O I：
10.1016/j.carbon.2007.09.038
中图分类号：
O64 [物理化学（理论化学）、化学物理学];
学科分类号：
070304 ; 081704 ;
摘要：
The significance of the sidewall surface of vertically aligned carbon nanotubes (VACNTs) and the effect of humidity in the determination of VACNT film friction coefficient have been investigated. VACNT films of 2 mu m thick were sidewall-modified by means of CF4 and O-2 plasma treatments, and verified for the functionalization of the sidewalls. They were then characterized for wettability properties, as well as friction coefficient using friction force microscopy at different humidity levels. It was found that humidity had insignificant effect on the friction coefficient, and sidewall friction formed a major component of the friction force experienced by the tip. Sidewall modifications resulted in friction coefficient changes of up to 50%. (C) 2007 Elsevier Ltd. All rights reserved.
引用
收藏
页码：2737 / 2743
页数：7
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