We report a novel imprinting method employing an ultraviolet (UV) cured reactive mesogen (RM) hardened in a homeotropic orientation. During UV curing, selectively photopolymerized bonds were created and RM molecules were aligned vertically. Based on X-ray photoelectron spectroscopy (XPS) results, we confirmed than an increased atomic percentage of the alignment layer was made from the RM, which was UV cured using the imprinting method. The measurement of retardation showed the anisotropic nature of the imprinted substrates. Also, vertically aligned (VA) liquid crystal (LC) cells created by this imprinting method showed superior electro-optic (EO) properties as compared with the rubbing method.
Bibliographical notePublisher Copyright:
© 2014 Optical Society of America.
All Science Journal Classification (ASJC) codes
- Electronic, Optical and Magnetic Materials