Load Dependent Frictional Response of Vertically Aligned Single-Walled Carbon Nanotube Films
Load Dependent Frictional Response of Vertically Aligned Single-Walled Carbon Nanotube Films
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垂直排列单壁碳纳米管薄膜的负载相关摩擦响应
DOI：
10.1016/j.scriptamat.2016.07.032
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发表时间：
2016
影响因子：
6
通讯作者：
C. L. Pint
中科院分区：
文献类型：
--
作者：
A. S. Westover;J. Choi;K. Cui;T. Ishikawa;T. Inoue;R. Xiang;S. Chiashi;T. Kato;S. Maruyama;C. L. Pint
在这里，我们使用微划痕测试来演示单壁碳纳米管 (SWCNT) 森林材料如何与固体表面表现出可变的粘附特性，从由于 SWCNT 正常排列而导致的低负载下可忽略不计的粘附力，到利用 SWCNT 非凡侧壁粘附力的高负载下的最大粘附力。这一观察结果在传统块体材料中没有表现出类似情况，与低密度单壁碳纳米管-基底界面形态的负载诱导结构改性相关。这一观察结果开辟了使用低密度材料的结构改性来设计和控制与固体表面的广泛粘合性能的新途径。
Here we use microscratch testing to demonstrate how a single-walled carbon nanotube (SWCNT) forest material can exhibit variable adhesion properties with solid surfaces ranging from negligible adhesion at low loading due to the normal alignment of SWCNTs to maximum adhesion at high loading that exploits the extraordinary sidewall adhesion of SWCNTs. This observation, which exhibits no analog in conventional bulk materials, is correlated to loading-induced structural modification of the low-density SWCNT-substrate interface morphology. This observation opens new pathways to use structural modification of low density materials to engineer and control a wide range of adhesion properties with solid surfaces.