Relationship between Moving Velocity of Fine Particles and Dielectric Anisotropy and Viscosity of Nematic Liquid Crystals in MFPD

Abstract

In our previous paper, a theoretical model had been proposed for the movement of particles in the MFPD (Mobile Fine Particle Display). Furthermore, based on the model, the expression for the moving velocity of particles along the parallel direction to the substrate surface had been driven taking account of Coulomb's force, the dielectric force and the viscous force acting on particles. In this paper, the validity of theoretical model and the theoretical expression for the velocity has been experimentally investigated and confirmed using a several kinds of nematic liquid crystal having different values of dielectric anisotropy and viscosity.