The directional motion of nano-objects induced by an inhomogeneous strain field
The directional motion of nano-objects induced by an inhomogeneous strain field
复制标题
非均匀应变场引起的纳米物体的定向运动
DOI：
10.1007/s00707-019-02443-6
复制
发表时间：
2019-07
期刊：
影响因子：
2.7
通讯作者：
Yang Yazheng
中科院分区：
文献类型：
--
作者：
Peng Zhilong;An Huazhen;Yang Yazheng
最近的分子动力学模拟表明，衬底中的非均匀应变场可以驱动纳米物体在其表面移动。本文从连续介质力学的角度出发，借助原子相互作用势，建立了一个理论模型来寻找其力学机理。衬底用石墨烯表示，上述纳米物体用石墨烯薄片或碳纳米管表示。考虑了三种典型的非均匀应变场，包括线性、幂和指数。结果表明，在片状纳米管和圆形纳米管上分别可以产生驱动力和偶矩。随着衬底应变梯度的增大，驱动力和耦合力矩均增大。为了解释现有数值模拟中一些有趣的结果，本文还研究了纳米物体的尺寸效应和边界效应对运动的影响。本文的理论研究不仅揭示了非均匀应变场诱导运动的驱动机制，而且为纳米输运器件的设计提供了新的思路。
Recent molecular dynamics simulations have shown that an inhomogeneous strain field in a substrate could drive nano-objects to move on its surface. A theoretical model is established in this paper in order to find the mechanical mechanism from the continuum mechanics point of view, but with the help of atomic interaction potential. The substrate is represented by graphene, and the above nano-object is represented by a graphene flake or a carbon nanotube. Three typically inhomogeneous strain fields are considered, including linear, power and exponential. It was found that a driving force and a couple moment can be induced on the flat flake and the circular nanotube, respectively. Furthermore, both the driving force and the couple moment increase with the increase in strain gradient in the substrate. The size effect of nano-objects and boundary effect on the movement are also investigated in order to explain some interesting results found in the existing numerical simulations. The present theoretical study cannot only reveal the source of the driving mechanism for the movement induced by an inhomogeneous strain field but also give insights for the design of nano-transport devices.
登录
查看更多内容
通过旋转电场和旋转磁场将水泵送通过碳纳米管
影响因子：
4
作者：
Li, Xiao-Peng;Kong, Gao-Pan;He, Guo-Wei
通讯作者：
He, Guo-Wei
影响因子：
2.7
作者：
Cun Zhang;Lei Chen;Shaohua Chen
通讯作者：
Cun Zhang;Lei Chen;Shaohua Chen
DOI：
10.1016/j.colsurfb.2014.08.014
发表时间：
2014-11
期刊：
Colloids and surfaces. B, Biointerfaces
影响因子：
--
作者：
Lei Chen;Shaohua Chen;Huajian Gao
通讯作者：
Lei Chen;Shaohua Chen;Huajian Gao
纳米粒子传输新技术及其在新型纳米筛中的应用
影响因子：
4.6
作者：
Wang S;Wang C;Peng Z;Chen S
通讯作者：
Chen S
影响因子：
5.5
作者：
Becton, Matthew;Wang, Xianqiao
通讯作者：
Wang, Xianqiao