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Crystals 2016, 6(11), 145; doi:10.3390/cryst6110145

Shear-Thinning Characteristics of Nematic Liquid Crystals Doped with Nanoparticles

1
Department of Electrical Engineering, Graduate School of Engineering, Nagaoka University of Technology, 1603-1 Kamitomioka, Nagaoka, 940-2188 Niigata, Japan
2
Department of Applied Physics, Graduate School of Engineering, Hokkaido University, 060-8628 Sapporo, Japan
*
Author to whom correspondence should be addressed.
Academic Editor: Charles Rosenblatt
Received: 15 September 2016 / Revised: 3 November 2016 / Accepted: 9 November 2016 / Published: 12 November 2016
(This article belongs to the Section Liquid Crystals)
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Abstract

This work investigated changes in the physical properties of nematic liquid crystals (NLCs) upon doping with nanoparticles. Shear viscosity measurements demonstrated the shear-thinning of typical NLCs following the addition of small amounts of nanoparticles at approximately 1 wt. %. However, neither the birefringence nor the dielectric anisotropy was significantly affected at these levels of doping. The shear-thinning appears to result from the locally ordered alignment of the NLCs in the vicinity of the nanoparticles rather than from reductions in the bulk order parameters. View Full-Text
Keywords: nematic liquid crystals; nanoparticles; shear-thinning; order parameter; birefringence nematic liquid crystals; nanoparticles; shear-thinning; order parameter; birefringence
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This is an open access article distributed under the Creative Commons Attribution License which permits unrestricted use, distribution, and reproduction in any medium, provided the original work is properly cited. (CC BY 4.0).

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Kimura, M.; Hanafi, Z.A.B.; Takagi, T.; Sawara, R.; Fujii, S. Shear-Thinning Characteristics of Nematic Liquid Crystals Doped with Nanoparticles. Crystals 2016, 6, 145.

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