Issue 20, 2013
From the journal:

Soft Matter

Strong orientational coupling in two-component suspensions of rod-like nanoparticles

Sergey Kredentser,a   Oleksandr Buluy,a   Patrick Davidson,b   Ivan Dozov,c   Sergiy Malynych,d   Victor Reshetnyak,e   Kostyantyn Slyusarenkoab  and  Yuriy Reznikov*a  

* Corresponding authors

a Institute of Physics, National Academy of Sciences of Ukraine, Pr. Nauki 46, Kyiv 03028, Ukraine
E-mail: yurireznikov@hotmail.com

b Laboratoire de Physique des Solides, UMR CNRS 8502, Université Paris-Sud, Orsay 91405, France

c University of Picardie Jules Verne, Amiens 80025, France

d Institute for Physics of Semiconductors, NAS of Ukraine, Pr. Nauki 41, Kyiv 03028, Ukraine

e Taras Shevchenko National University of Kyiv, Kyiv 01601, Ukraine

Abstract

We consider two-component suspensions of non-magnetic and magnetic rods and show that alignment of the magnetic component by a magnetic field orients the non-magnetic one. We studied suspensions of non-magnetic V2O5 rods doped with magnetic Fe3O4 nanoparticles. In the isotropic phase, the field-induced orientation of Fe3O4 particle chains aligns the V2O5 rods. Moreover, the nematic phase reorients towards the field at ≈50 Oe, much less than the ≈5 kOe needed for pure V2O5 suspensions. Such effects should exist in any suspension of two kinds of rods, one of which is sensitive to an external field.

Graphical abstract: Strong orientational coupling in two-component suspensions of rod-like nanoparticles

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Article information

DOI
https://doi.org/10.1039/C3SM27881F
Article type
Paper
Submitted
17 Dec 2012
Accepted
20 Mar 2013
First published
12 Apr 2013

Soft Matter, 2013,9, 5061-5066

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Strong orientational coupling in two-component suspensions of rod-like nanoparticles

S. Kredentser, O. Buluy, P. Davidson, I. Dozov, S. Malynych, V. Reshetnyak, K. Slyusarenko and Y. Reznikov, Soft Matter, 2013, 9, 5061 DOI: 10.1039/C3SM27881F

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