Direct measurement of interaction between colloidal particles in nematic liquid crystal

Kenji Takahashi; Yoshihiko Fujiwara; Masatoshi Ichikawa; Yasuyuki Kimura

doi:10.1080/15421400701732373

Direct measurement of interaction between colloidal particles in nematic liquid crystal

Kenji Takahashi, Yoshihiko Fujiwara, Masatoshi Ichikawa, Yasuyuki Kimura

Condensed Matter Physics

Research output: Contribution to journal › Article › peer-review

Abstract

Interparticle force F between two colloidal particles accompanied by hyperbolic hedgehog defects has been studied in nematic liquid crystal by two methods. We have directly measured F as a function of interparticle distance R in the case of two "dipoles" composed of a particle and an accompanied defect aligning parallel to the far-field director. We have confirmed the theoretical prediction that F is proportional to R-4 at longer distance but the magnitude of F is different in two methods. We have also observed that repulsive component emerges at shorter distance.

Original language	English
Pages (from-to)	183-192
Number of pages	10
Journal	Molecular Crystals and Liquid Crystals
Volume	475
Issue number	1
DOIs	https://doi.org/10.1080/15421400701732373
Publication status	Published - Jan 2007

All Science Journal Classification (ASJC) codes

Chemistry(all)
Materials Science(all)
Condensed Matter Physics

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AU - Fujiwara, Yoshihiko

AU - Ichikawa, Masatoshi

AU - Kimura, Yasuyuki

PY - 2007/1

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AB - Interparticle force F between two colloidal particles accompanied by hyperbolic hedgehog defects has been studied in nematic liquid crystal by two methods. We have directly measured F as a function of interparticle distance R in the case of two "dipoles" composed of a particle and an accompanied defect aligning parallel to the far-field director. We have confirmed the theoretical prediction that F is proportional to R-4 at longer distance but the magnitude of F is different in two methods. We have also observed that repulsive component emerges at shorter distance.

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Direct measurement of interaction between colloidal particles in nematic liquid crystal

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