Numerical Study on Liquid Crystalline Actuators Using Back-Flow Effect
As a purpose of developing micro-actuators driven by liquid crystals, transient behaviors of a nematic liquid crystal between two parallel plates under an electric field have investigated numerically by using the Leslie-Ericksen theory. Twist angle has been selected as computational parameters. Imposition of an electric field on a liquid crystal induces backflow whose profile and magnitude depend strongly on the twist angle of the director. When the twist angle is 0 degree, the induced flow is planar, and with increasing of the twist angle, the flow has an out of plane component, and finally the profile becomes unidirectional when the twist angle reaches 180 degrees.
C. B. Liu et al., "Numerical Study on Liquid Crystalline Actuators Using Back-Flow Effect", Advanced Materials Research, Vols. 211-212, pp. 430-433, 2011