화학공학소재연구정보센터
Molecular Crystals and Liquid Crystals, Vol.502, 195-206, 2009
Holographic Recordings Using Bistable SmC* Structures
Numerous methods of re-writable optical recordings using nematic mixtures for holographic media have been presented. A new approach to this problem is possible by using surface stabilized ferroelectric liquid crystal structures (SSFLC). This is very promising from the theoretical point of view because the surface stabilized the structure of ferroelectric smectic SmC* material inherently consists of a memory effect while driving by external electric field. Moreover, due to the layered structure of the surface stabilized ferroelectric liquid crystal there is a possibility of obtaining high resolution of the written gratings. In the paper, some theoretical basis regarding possibility of optical addressing of SSFCL cells are discussed. Methods of preparation of the optically addressed SSFLC cells in room temperature bistable SmC* structure are presented. Experiments with these cells in simple holographic two-beam set-up (DWTM) are described.