Title :
Electrostatic effects in the dynamics of wall defects in liquid crystal optical devices
Author :
Singh, Nagendra ; Leung, W.C.
Author_Institution :
Dept. of Electr. & Comput. Eng., Alabama Univ., Huntsville, AL, USA
Abstract :
Shows that the self-consistently generated electric field perturbations play a significant role in the formation and dynamics of defect walls in LC devices operating in strongly nonuniform electric fields. Normally in the literature on liquid crystals the location of the wall defect is obtained by minimizing the total free energy in the steady state. In our time-dependent simulations, the formation motion and the steady state structure containing the wall defect are obtained by self-consistently solving the equation of rotation for the nematic material and the Poisson equation
Keywords :
electro-optical devices; electro-optical effects; electrostatics; free energy; liquid crystal devices; molecular orientation; nematic liquid crystals; Poisson equation; defect walls; dynamics; electrostatic effects; equation of rotation; formation motion; liquid crystal optical devices; liquid crystals; nematic material; self-consistent solution; self-consistently generated electric field perturbations; steady state; steady state structure; strongly nonuniform electric fields; time-dependent simulations; total free energy; wall defect; wall defects; Electrodes; Electrostatics; Liquid crystal devices; Liquid crystals; Nonuniform electric fields; Optical devices; Permittivity; Poisson equations; Polarization; Torque;
Conference_Titel :
Nonlinear Optics '98: Materials, Fundamentals and Applications Topical Meeting
Conference_Location :
Kauai, HI
Print_ISBN :
0-7803-4950-4
DOI :
10.1109/NLO.1998.710318
