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Crystals 2015, 5(4), 501-533; doi:10.3390/cryst5040501

Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena

UCCS BioFrontiers Center & Department of Physics, University of Colorado Colorado Springs, Colorado Springs, CO 80918, USA
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Academic Editor: Helmut Cölfen
Received: 6 October 2015 / Revised: 25 October 2015 / Accepted: 26 October 2015 / Published: 2 November 2015
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Abstract

The presence of ions in liquid crystals is one of the grand challenges that hinder the application of liquid crystals in various devices, which include advanced 3-D and flexible displays, tunable lenses, etc. Not only do they compromise the overall performance of liquid crystal devices, ions are also responsible for slow response, image sticking, and image flickering, as well as many other negative effects. Even highly purified liquid crystal materials can get contaminated during the manufacturing process. Moreover, liquid crystals can degrade over time and generate ions. All of these factors raise the bar for their quality control, and increase the manufacturing cost of liquid crystal products. A decade of dedicated research has paved the way to the solution of the issues mentioned above through merging liquid crystals and nanotechnology. Nano-objects (guests) that are embedded in the liquid crystals (hosts) can trap ions, which decreases the ion concentration and electrical conductivity, and improves the electro-optical response of the host. In this paper, we (i) review recently published works reporting the effects of nanoscale dopants on the electrical properties of liquid crystals; and (ii) identify the most promising inorganic and organic nanomaterials suitable to capture ions in liquid crystals. View Full-Text
Keywords: nano-objects; nanoparticles; ions; liquid crystals; electrical conductivity; ion trapping; purification nano-objects; nanoparticles; ions; liquid crystals; electrical conductivity; ion trapping; purification
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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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Garbovskiy, Y.; Glushchenko, I. Nano-Objects and Ions in Liquid Crystals: Ion Trapping Effect and Related Phenomena. Crystals 2015, 5, 501-533.

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