Molecular Dynamics Study of Rotating Nanodroplets: Finite-size Effects and Nonequilibrium Deformation

TL;DR

This study uses molecular dynamics simulations to explore how rotating nanodroplets deform under nonequilibrium conditions, revealing size-dependent deviations from theory and the influence of temperature on deformation timescales.

Contribution

It provides new insights into the finite-size effects and temperature dependence of nanodroplet deformation dynamics under rotation.

Findings

Deviations from theoretical predictions decrease with increasing droplet size.

Deformation timescale is nearly independent of rotation speed at low frequencies.

Higher temperatures lead to shorter deformation timescales.

Abstract

Noneqiuilibrium dynamics of rotating droplets are studied by molecular dynamics simulations. Small deviations from the theoretical prediction are observed when the size of a droplet is small, and the deviations become smaller as the size of the droplet increases. The characteristic timescale of the deformation is observed, and we find (i) the deformation timescale is almost independent of the rotating velocity with for small frequency and (ii) the deformation timescale becomes shorter as temperature increases. A simple model is proposed to explain the deformation dynamics of droplets.