Vladimir G. Chigrinov
香港科技大学
地点：唐仲英楼A213
时间：2017-05-09 09:00
Photoalignment and photopatterning is a key technology in wide range of areas. It possesses obvious advantages in comparison with the usually “rubbing” treatment of the substrates of liquid crystal display (LCD) cells, such as avoiding any mechanical damage, electrostatic charge, or dust contamination. Liquid crystal devices based on photo-alignment and photo-patterning materials, were proposed, including patterned retarders for 3D applications, lenses with electrically tunable focal distance, LC based sensors, switchable q-plates, and optically rewritable E-paper. The photoalignment materials were mostly photosensitive azodye layers. The combination of azo-dye layers and liquid crystal polymers were also used for photo patterned phase retarders. The practical applications of new LC elements in 3D displays and other LC technology areas are envisaged.
Professor Chigrinov obtained PhD degree in Solid State Physics (Liquid Crystals) in the Institute of Crystallography, USSR Academy of Sciences in 1978. He was a Senior, Leading Researcher, and then Chief of Department in Organic Intermediates & Dyes Institute (NIOPIK) since 1973. He was working as a Leading Scientist in the Institute of Crystallography, Russian Academy of Sciences and join HKUST since 1996. He was a coauthor of the first LC materials and devices based on Electrically Controlled Birefringence, Twisted Nematic and Supertwisted Nematic and Ferroelectric LC materials, working at understanding the fundamental aspects of LC physics and technology. Some new LC Electrooptical Modes, e.g. Orientational Instability in Cholesteric LC, Deformed Helix Effect in Ferroelectric LC, and Total Internal Reflection, Surface Gliding Effect and Surface Induced Orientational Transition in Nematic LC were first described by him and confirmed in experiment. He was a coauthor of a pioneering work in LC Photoaligning Technology, which has about 500 citations in scientific and technical journals. He is an Expert in Flat Panel Technology in Russia, recognized by World Technology Evaluation Centre (1994), a Senior Member of the Society of Information Display (2004) and a fellow of SID since (2008). He is a member of Editorial Board of "Liquid Crystals Today" since 1996 and Associate Editor of Journal of SID since 2005. He is an author of 2 books, 15 reviews and book chapters, 133 journal papers, 286 Conference presentations and 50 patents and patent applications in the field of liquid crystals since 1974.