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Diffusion of a liquid nanoparticle on a disordered substrate

F. Celestini
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Abstract

We perform molecular dynamic simulations of liquid nanoparticles deposited on a disordered substrate. The motion of the nanoparticle is characterised by a 'stick and roll' diffusive process. Long simulation times ($\simeq μs$), 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 $N^{1/3}$.

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F. Celestini. 2004-06-25. Diffusion of a liquid nanoparticle on a disordered substrate. https://doi.org/10.1103/physrevb.70.115402

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