Chiral nematic phases were the first liquid crystals that I worked with as an undergrad. My Ph.D. was all about these twisted phases. The following movie shows the dramatic effects in texture seen at the clearing temperature when air currents play across the surface of the sample. The sample is a mixture of cholesteryl propionate and 6,6'-bis(hexyloxy)azoxybenzene.
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Vance Williams
is a Professor of Chemistry at Simon Fraser University. Archives
October 2015
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