Physical Review Letters
electric-field, growth, interface, textures, surface, fingers, films
We have observed an interesting pattern evolution of cholesteric liquid crystals during the homeotropic-focal conic transition in a dispersed polymer network. From the electrical field induced homeotropic state, if the field is:reduced to an appropriate bias level focal conics grow at a constant speed, being an open or compact structure depending on the field strength. When the field is increased, these patterns change to ramified structures. We phenomenologically explained the observation.
Zhu, Yang-Ming and Yang, Deng-Ke (1999). Observation of Pattern Evolution During Homeotropic-Focal Conic Transition in Cholesteric Liquid Crystals. Physical Review Letters 82(24), 4855-4858. doi: 10.1103/PhysRevLett.82.4855 Retrieved from http://digitalcommons.kent.edu/cpippubs/255