Activated barrier crossing dynamics of a Janus particle carrying cargo

文献情報

出版日 2018-09-07

DOI 10.1039/C8CP04419H

インパクトファクター 3.676

著者

Tanwi Debnath, Pulak Kumar Ghosh

原文を見る

要旨

We numerically study the escape kinetics of a self-propelled Janus particle, carrying a cargo, from a meta-stable state. We assume that the cargo is attached to the Janus particle by a flexible harmonic spring. We take into account the effect of the velocity field created in the fluid due to movements of the dimer's components, by considering a space-dependent diffusion tensor (Oseen tensor). Our simulation results show that the synchronization between barrier crossing events and the rotational relaxation process can enhance the escape rate to a large extent. Also, the load carrying capability of a Janus particle is largely controlled by its rotational dynamics and self-propulsion velocity. Moreover, the hydrodynamic interaction, conspicuously, enhances the escape rate of the Janus–cargo dimer. The most important features in escape kinetics have been justified based on analytic arguments.

掲載誌

Physical Chemistry Chemical Physics

CiteScore: 5.5

自己引用率: 10.3%

年間論文数: 3036

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