期刊
TRIBOLOGY INTERNATIONAL
卷 102, 期 -, 页码 600-607出版社
ELSEVIER SCI LTD
DOI: 10.1016/j.triboint.2016.06.023
关键词
Friction anisotropy and asymmetry; Molecular dynamics; Nanotribology; Self assembled monolayers
Experiments with molecularly thin self assembled monolayers have suggested existence of friction force anisotropy and asymmetry. Here molecular dynamics simulations are used to study friction anisotropy and asymmetry between two self assembled monolayers (SAM) of n-alkanethiols [CH3(CH2)(n-1)S, n = 14] attached on Au (111) substrates. The simulations show the existence of friction anisotropy and asymmetry in agreement with some of the experimental works in literature. Friction shows dependence on the relative direction of sliding and monolayers tilt direction. The origin of this friction anisotropy is discussed. The friction asymmetry depends on the direction of sliding and is significant in the direction of the tilt. On this molecular carpet interestingly, it is easier to slide against the nap (tilt direction) than in the direction of the nap (tilt direction). (C) 2016 Elsevier Ltd. All rights reserved.
作者
我是这篇论文的作者
点击您的名字以认领此论文并将其添加到您的个人资料中。
推荐
暂无数据