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Issue 22, 2018
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Transient dynamical responses of a charged binary colloid in an electric field

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Abstract

In a model system of oppositely charged colloids we study via Brownian dynamics simulation the dynamical response as the system approaches steady states upon application of a constant electric field. The system is known to form patterns of like charges in the transverse plane to the field that are elongated along the field as lanes. We show that an increase in structural heterogeneity leads to non-Gaussian tails in the probability distribution of particle displacements [self van Hove functions (self-vHfs)]. The self-diffusion coefficient depends upon the time of the observations and consequently indicates aging in the system. However, the anomalies in the self-vHfs and diffusion do not appear during the melting of the structures.

Graphical abstract: Transient dynamical responses of a charged binary colloid in an electric field

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Article information


Submitted
28 Dec 2017
Accepted
16 May 2018
First published
29 May 2018

Soft Matter, 2018,14, 4477-4482
Article type
Paper

Transient dynamical responses of a charged binary colloid in an electric field

S. Dutta and J. Chakrabarti, Soft Matter, 2018, 14, 4477
DOI: 10.1039/C7SM02552A

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