Figure 2From: Zenithal alignment of liquid crystal on homeotropic polyimide film irradiated by ion beamLC pretilt angle depending on ion beam exposure conditions. (a) LC pretilt angle as the function of ion beam energy, (b) LC pretilt angle as the function of exposure time, (c) LC pretilt angle as the function of exposure angle, and (d) LC pretilt angle as the function of ion beam current density.Back to article page