Friction Properties of Bio-mimetic Nano-fibrillar Arrays  

作　　者：陈少华 米春晖 

机构地区：[1]LNM, Institute of Mechanics, Chinese Academy of Sciences, Beijing 100190

出　　处：《Chinese Physics Letters》2009年第10期203-205,共3页中国物理快报（英文版）

基　　金：Supported by the National Natural Science Foundation of China under Grant Nos 10672165, 10732050 and 10721202, the Knowledge Innovation Project of Chinese Academy of Sciences under Grant No KJCX2-YW-M04, and Start Fund for Returning Overseas Person. The authors gratefully acknowledge the research groups of Jiang Lei at NCNT, Dai Zhendong at NUAA and Zhang Jinjun at THU for their help in the experiment.

摘　　要：Nano-fibrillar arrays are fabricated using polystyrene materials. The average diameter of each fiber is about 300 nm. Experiments show that such a fibrillar surface possesses a relatively hydrophobie feature with a water contact angle of 142°. Nanoscale friction properties are mainly focused on. It is found that the friction force of polystyrene nano-fibrillar surfaces is obviously enhanced in contrast to polystyrene smooth surfaces. The apparent coefficient of friction increases with the applied load, but is independent of the scanning speed. An interesting observation is that the friction force increases almost linearly with the real contact area, which abides by the fundamental Bowden-Tabor law of nano-seale friction.Nano-fibrillar arrays are fabricated using polystyrene materials. The average diameter of each fiber is about 300 nm. Experiments show that such a fibrillar surface possesses a relatively hydrophobie feature with a water contact angle of 142°. Nanoscale friction properties are mainly focused on. It is found that the friction force of polystyrene nano-fibrillar surfaces is obviously enhanced in contrast to polystyrene smooth surfaces. The apparent coefficient of friction increases with the applied load, but is independent of the scanning speed. An interesting observation is that the friction force increases almost linearly with the real contact area, which abides by the fundamental Bowden-Tabor law of nano-seale friction.

关 键 词：sea surface nonliear interaction numerical method 

分 类 号：TQ325.2[化学工程—合成树脂塑料工业] TB383[一般工业技术—材料科学与工程]