Abstract

A new electrophotographic imaging process using mixed cholesteric liquid crystals and a xerographic plate is described. The liquid crystals have a bistable behavior and are switched by the imaging process. For a given angle of illumination and observation, the most strongly reflected wavelength differs by several thousand angstroms in the two states. A shift between these states can be produced by direct mechanical disturbance or by the indirect action of an electric field which causes a migration of material.

© 1968 Optical Society of America

Imagewise Deformation and Color Change of Liquid Crystals in Electric Fields

W. Haas, J. Adams, and J. Wysocki
Appl. Opt. 8(S1) 196-198 (1969)

Liquid Crystals in Nondestructive Testing

James L. Fergason
Appl. Opt. 7(9) 1729-1737 (1968)

Selected Optical Properties of Mixtures of Cholesteric Liquid Crystals

L. Melamed and D. Rubin
Appl. Opt. 10(5) 1103-1107 (1971)

Optical Reflection from Cholesteric Liquid Crystal Films

S. V. Subramanyam
Appl. Opt. 10(2) 317-320 (1971)

Nonlinear optical imaging of lyotropic cholesteric liquid crystals

Ariane Deniset-Besseau, Paulo De Sa Peixoto, Gervaise Mosser, and Marie-Claire Schanne-Klein
Opt. Express 18(2) 1113-1121 (2010)