Diffusion of a liquid nanoparticle on a disordered substrate

被引：8

作者：

Celestini, F ^{[1
]}

机构：

[1] Univ Nice Sophia Antipolis, Lab Phys Mat Condensee, UMR 6622, CNRS, F-06108 Nice 2, France

来源：

PHYSICAL REVIEW B | 2004年 / 70卷 / 11期

关键词：

D O I：

10.1103/PhysRevB.70.115402

中图分类号：

T [工业技术];

学科分类号：

08 ;

摘要：

We perform molecular dynamic simulations of liquid nanoparticles deposited on a disordered substrate. The motion of the nanoparticle is characterized by a "stick and roll" diffusive process. Long simulation times (similar or equal tomus), analysis of mean square displacements and stacking time distribution functions demonstrate that the nanoparticle undergoes a normal diffusion in spite of long sticking times. We propose a phenomenological model for the size and temperature dependence of the diffusion coefficient in which the activation energy scales as N-1/3.

引用

页码：115402 / 1

页数：6

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