D. Andrienko et al., Control of the anchoring energy of rubbed polyimide layers by irradiation with depolarized UV-light, JPN J A P 1, 39(3A), 2000, pp. 1217-1220
Exposure of rubbing polyimide (PI) film to depolarized ultraviolet (UV) lig
ht suppressed the effective anchoring energy of liquid crystal (LC) with al
igning surface. Polarized light changed the orientational distribution of P
I molecules obtained by rubbing by changing both the anchoring energy and e
asy axis direction. These results show that ultraviolet exposure can be eff
ectively used to control anchoring parameters.