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Fluids 2018, 3(2), 26; https://doi.org/10.3390/fluids3020026

A Short Review on the Rheology of Twist Grain Boundary-A and Blue Phase Liquid Crystals

School of Physics, University of Hyderabad, Hyderabad 500046, India
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Received: 22 February 2018 / Revised: 30 March 2018 / Accepted: 4 April 2018 / Published: 9 April 2018
(This article belongs to the Special Issue Liquid Crystal Rheology)

Abstract

Topological defects are important in determining the properties of physical systems and are known varyingly depending on the broken symmetry. In superfluid helium, they are called vortices; in periodic crystals, one refers to dislocations; and in liquid crystals, they are disclinations. The defects and the inter-defect interaction in some highly chiral liquid crystals stabilize some intermediate complex phases such as Blue Phases (BPs) and Twist Grain Boundary-A (TGBA) phases. The defect dynamics of these phases contributes to the rheological properties. The temperature range of these intermediate phases usually are very small in pure liquid crystals; consequently, a detailed experiment has been difficult to achieve. However, the temperature range could be enhanced significantly in multicomponent systems. In this review article, we discuss some recent experimental progress made in understanding the rheological properties of the wide-temperature-range TGBA and BP liquid crystals. View Full-Text
Keywords: liquid crystals; topological defects; TGBA; BPs; rheology liquid crystals; topological defects; TGBA; BPs; rheology
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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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Sahoo, R.; Dhara, S. A Short Review on the Rheology of Twist Grain Boundary-A and Blue Phase Liquid Crystals. Fluids 2018, 3, 26.

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