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Proceedings Paper

Polymer-dispersed liquid crystal films using new polymer transformed with coloring matter
Author(s): Doina Manaila-Maximean; Ana Maria Albu; Boris A. Umanski; Constantin Rosu; Rodica Bena
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Paper Abstract

We prepared a copolymer of the maleic anhydride with styrene, to which a colored structure designated for the functionalization was added. The new polymer was used to prepare reverse-mode PDLC films. Reverse-mode PDLC are designed for applications where it is important that the failure of the device is a transparent state, rather than a scattering one. We obtained reverse-mode PDLC using a nematic liquid crystal with negative anisotropy (Delta) (epsilon) <0, LCM 3141 (NIOPIK), and we measured the optical transmission of the film. The system was switched from OFF-transparent state to the ON-scattering one, by a sufficiently small voltage, but with a rather low contrast ratio.

Paper Details

Date Published: 29 June 2001
PDF: 6 pages
Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); doi: 10.1117/12.432891
Show Author Affiliations
Doina Manaila-Maximean, Univ. Politehnica Bucharest (Romania)
Ana Maria Albu, Univ. Politehnica Bucharest (Romania)
Boris A. Umanski, Organic Intermediates and Dyes Institute (Russia)
Constantin Rosu, Univ. Politehnica Bucharest (Romania)
Rodica Bena, Univ. Politehnica Bucharest (Romania)


Published in SPIE Proceedings Vol. 4430:
ROMOPTO 2000: Sixth Conference on Optics

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