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20.4: Photon‐Mode Full‐Color Rewritable Image Using Photochromic Compounds
Author(s) -
Kawashima I.,
Takahashi H.,
Hirano S.,
Matsushima R.
Publication year - 2003
Publication title -
sid symposium digest of technical papers
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.351
H-Index - 44
eISSN - 2168-0159
pISSN - 0097-966X
DOI - 10.1889/1.1832404
Subject(s) - photochromism , materials science , brightness , hue , polystyrene , high color , irradiation , optics , visible spectrum , optoelectronics , photochemistry , color image , chemistry , computer science , polymer , computer vision , image processing , image (mathematics) , nanotechnology , physics , composite material , nuclear physics
Photon‐mode full‐color rewritable image has been demonstrated. Three kinds of photochromic fulgides were used as rewritable dyes. Photochromic fulgides and polystyrene were mixed and coated on a white polyethylene terephthalate film. On irradiation with three (red, green, and blue) visible light beams, wide hue extent, high white reflectance over 80 %, and high contrast ratio over 45 were attained. A full‐color image keeps their colors over an hour under the standard office brightness (700 lx) without substantial fatigues. The photochemical coloration‐decoloration cycles could be repeated over 100 times.