机械振动驱动碳纳米管中水的输运规律  

Controllable water flux transport through a nanosized water pump

作　　者：陈冰[1] 周晓艳[1] 

机构地区：[1]浙江师范大学理论物理研究所,浙江金华321004

出　　处：《浙江师范大学学报（自然科学版）》2016年第3期288-293,共6页Journal of Zhejiang Normal University:Natural Sciences

基　　金：国家自然科学基金资助项目(11505156)

摘　　要：根据棘轮理论设计了一个基于碳纳米管的纳米水泵模型,利用在碳纳米管壁偏离中点的位置施加一周期性的机械振动来驱动纳米管中的水;用分子动力学模拟重点研究了纳米管壁不同位置的机械振动对水泵中的定向流的影响.发现水泵中的定向流非常敏感地依赖于振动的位置,而碳纳米管壁上往左右两边传播的机械波的不对称性是引起定向流及其方向反转的主要原因.It was conducted a molecular dynamics simulation to investigate current inversions in a nano water pump based on a single-walled carbon nanotube powered by mechanical vibration. It was found that the water flux depended sensitively on the position of the vibrating carbon atom. Especially, the nanoseale pump under- went reversals of the water current. This phenomenon was attributed the differences in the amplitudes between the two mechanical waves generated by mechanical vibration and oppositely propagating toward the two ends of the carbon nanotubc.

关 键 词：纳米水泵 碳纳米管 分子动力学 定向流 

分 类 号：O352[理学—流体力学]