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Issue 22, 2013
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Electrically tunable optoelastic interaction range of nematic colloids

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Abstract

We report on the electrical tuning of the interaction range between colloidal particles in nematic liquid crystals. The experimental demonstration relies on the study of the dynamics of a real colloidal particle made of a glass sphere in the presence of an artificial laser-induced colloid that results from the local distortion of the nematic by a Gaussian light beam. The optoelastic interaction range between such a pair of colloids is shown to be fully controlled electrically. Moreover, all the observations are well described by an analytical model that accounts for the field-induced reorientation of the liquid crystal and the overlap between the long-range director distortion around both colloids.

Graphical abstract: Electrically tunable optoelastic interaction range of nematic colloids

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Article information


Submitted
25 Jan 2013
Accepted
31 Mar 2013
First published
26 Apr 2013

Soft Matter, 2013,9, 5459-5463
Article type
Paper

Electrically tunable optoelastic interaction range of nematic colloids

L. Criante, F. Bracalente, L. Lucchetti, F. Simoni and E. Brasselet, Soft Matter, 2013, 9, 5459
DOI: 10.1039/C3SM50273B

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