Polymer-dispersed liquid crystal films using new polymer transformed with coloring matter

Doina Manaila-Maximean; Ana Maria Albu; Boris A. Umanski; Constantin Rosu; Rodica Bena

doi:10.1117/12.432891

29 June 2001 Polymer-dispersed liquid crystal films using new polymer transformed with coloring matter

Doina Manaila-Maximean, Ana Maria Albu, Boris A. Umanski, Constantin Rosu, Rodica Bena

Proceedings Volume 4430, ROMOPTO 2000: Sixth Conference on Optics; (2001) https://doi.org/10.1117/12.432891
Event: ROMOPTO 2000: Sixth Conference on Optics, 2000, Bucharest, Romania

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.

Citation Download Citation

Doina Manaila-Maximean, Ana Maria Albu, Boris A. Umanski, Constantin Rosu, and Rodica Bena "Polymer-dispersed liquid crystal films using new polymer transformed with coloring matter", Proc. SPIE 4430, ROMOPTO 2000: Sixth Conference on Optics, (29 June 2001); https://doi.org/10.1117/12.432891

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