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Issue 38, 2018
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Activated barrier crossing dynamics of a Janus particle carrying cargo

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Abstract

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.

Graphical abstract: Activated barrier crossing dynamics of a Janus particle carrying cargo

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Publication details

The article was received on 12 Jul 2018, accepted on 07 Sep 2018 and first published on 07 Sep 2018


Article type: Paper
DOI: 10.1039/C8CP04419H
Citation: Phys. Chem. Chem. Phys., 2018,20, 25069-25077
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    Activated barrier crossing dynamics of a Janus particle carrying cargo

    T. Debnath and P. K. Ghosh, Phys. Chem. Chem. Phys., 2018, 20, 25069
    DOI: 10.1039/C8CP04419H

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