A Transient Instability in Thin Films of nCB Liquid Crystals
Stefan Schlagowski, Karin Jacobs, Stephan Herminghaus
Abstract
A transient surface instability is reported in thin nematic films of 5CB and 8CB, occurring near the nematic-isotropic phase transition. Although this instability leads to patterns reminiscent of spinodal dewetting, we show that it is actually based on a nucleation mechanism. Its characteristic wavelength does not depend markedly on film thickness, but strongly on the heating rate.
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