Issue 17, 2015

Transport of spherical colloids in layered phases of binary mixtures with rod-like particles

Abstract

The transport properties of colloids in anisotropic media constitute a general problem of fundamental interest in experimental sciences, with a broad range of technological applications. This work investigates the transport of soft spherical colloids in binary mixtures with rod-like particles by means of Monte Carlo and Brownian Dynamics simulations. Layered phases are considered, that range from smectic phases to lamellar phases, depending on the molar fraction of the spherical particles. The investigation serves to characterize the distinct features of transport within layers versus those of transport across neighboring layers, both of which are neatly differentiated. The insertion of particles into layers and the diffusion across them occur at a smaller rate than the intralayer diffusion modulated by the formation of transitory cages in its initial stages. Collective events, in which two or more colloids diffuse across layers in a concerted way, are described as a non-negligible process in these fluids.

Graphical abstract: Transport of spherical colloids in layered phases of binary mixtures with rod-like particles

Article information

Article type
Paper
Submitted
23 Dec 2014
Accepted
06 Mar 2015
First published
11 Mar 2015

Soft Matter, 2015,11, 3432-3440

Author version available

Transport of spherical colloids in layered phases of binary mixtures with rod-like particles

M. Piedrahita, A. Cuetos and B. Martínez-Haya, Soft Matter, 2015, 11, 3432 DOI: 10.1039/C4SM02865A

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