Shear Effects on Cholesteric Liquid Crystals

Publisher Website
Google Scholar
Abstract
On shearing, cholesteric liquid crystal (L.C.) films lose color intensity, but the wavelength of their maximum reflectance does not change appreciably. The rate of recovery of the intensity after cessation of shearing is linear with the logarithm of time. The thickness of the liquid crystal film is not a very strong factor in the behavior of total reflectance as a function of shear rate; however, the decrease in wavelength of maximum intensity as a function of shear is smallest for the thickest L. C. films Explanations for the large intensity drop combined with the almost stationary peak reflectance wavelengths, on shearing, are offered in terms of a mechanical model.

This publication has 4 references indexed in Scilit: