Flow-Induced Voltage Generation by Moving a Nano-Sized Ionic Liquids Droplet over a Graphene Sheet: Molecular Dynamics Simulation

Published in The Journal of Chemical Physics, 2016

Qunfeng Shao, Jingjing Jia, Yongii Guan, Xiaodong He, Xiaoping Zhang. J Chem Phys, 2016, 144(12): 124703.

Times cited: 12                     Download paper PDF here

Abstract

In this work, the phenomenon of the voltage generation is explored by using the molecular dynamics simulations, which is performed by driving a nano-sized droplet of room temperature ionic liquids moving along the monolayer graphene sheet for the first time. The studies show that the cations and anions of the droplet will move with velocity nonlinearly increasing to saturation arising by the force balance. The traditional equation for calculating the induced voltage is developed by taking the charge density into consideration, and larger induced voltages in µV-scale are obtained from the nano-size simulation systems based on the ionic liquids (ILs) for its enhanced ionic drifting velocities. It is also derived that the viscosity acts as a reduction for the induced voltage by comparing systems composed of two types of ILs with different viscosity and temperature.

Qunfeng Shao, Jingjing Jia, Yongii Guan, Xiaodong He, Xiaoping Zhang. Flow-Induced Voltage Generation by Moving a Nano-Sized Ionic Liquids Droplet over a Graphene Sheet: Molecular Dynamics Simulation. J Chem Phys, 2016, 144(12): 124703.