title: Rewritable Optical Storage with a Spiropyran Doped Liquid Crystal Polymer Film.
abstract: Rewritable optical storage has been obtained in a spiropyran doped liquid crystal polymer films. Pictures can be recorded on films upon irradiation with UV light passing through a grayscale mask and they can be rapidly erased using visible light. Films present improved photosensitivity and optical contrast, good resistance to photofatigue, and high spatial resolution. These photochromic films work as a multifunctional, dynamic photosensitive material with a real-time image recording feature.
authors: Institute of Cybernetics of the Georgian Technical University, Tbilisi, 0175, Georgia.
authors: Gia
authors: G
authors: Petriashvili
authors: Physics Department, University of Calabria, Rende, 87036, Italy.|CNR-Nanotec UOS di Cosenza, c/o University of Calabria, Rende, 87036, Italy.
authors: Maria Penelope
authors: MP
authors: De Santo
authors: Institute of Cybernetics of the Georgian Technical University, Tbilisi, 0175, Georgia.
authors: Lali
authors: L
authors: Devadze
authors: Institute of Cybernetics of the Georgian Technical University, Tbilisi, 0175, Georgia.
authors: Tsisana
authors: T
authors: Zurabishvili
authors: Institute of Cybernetics of the Georgian Technical University, Tbilisi, 0175, Georgia.
authors: Nino
authors: N
authors: Sepashvili
authors: Physics Department, University of Calabria, Rende, 87036, Italy.|CNR-Nanotec UOS di Cosenza, c/o University of Calabria, Rende, 87036, Italy.
authors: Ramla
authors: R
authors: Gary
authors: Physics Department, University of Calabria, Rende, 87036, Italy.|CNR-Nanotec UOS di Cosenza, c/o University of Calabria, Rende, 87036, Italy.
authors: Riccardo
authors: R
authors: Barberi
mesh_terms: D001578:Benzopyrans / Q000737:chemistry*; D007211:Indoles / Q000737:chemistry*; D007700:Kinetics; D009574:Nitro Compounds / Q000737:chemistry*; D016249:Optical Storage Devices; D055668:Photochemical Processes; D011108:Polymers / Q000737:chemistry*; D014466:Ultraviolet Rays
chemical_list: D001578:Benzopyrans; D007211:Indoles; D009574:Nitro Compounds; D011108:Polymers; C422409:liquid crystal polymer; C548873:merocyanine; C088184:spiropyran
keywords: films; patterned images; photochromism; polymer dispersed liquid crystals; spiropyrans