Effect of size polydispersity in polymer-dispersed liquid-crystal films

Joś A. Ferrari, Enrique A. Dalchiele, Erna M. Frins, Juan A. Gentilini, Ćsar D. Perciante, Elizabeth Scherschener

Producción científica: Contribución a una revistaArtículorevisión exhaustiva

16 Citas (Scopus)

Resumen

The electro-optical effect of size polydispersity in polymer-dispersed liquid-crystal (PDLC) films is investigated. Liquid crystal (LC) droplets of different sizes require different electric field amplitudes for director reorientation, which will produce a mismatch of effective refractive indices. This, in turn, will produce an increase in interdroplet scattering (i.e., decrease in the direct transmitted light) within a specific range of electric field amplitudes. We propose a phenomenological "two-size" model describing this enhanced "pseudo-off-state" achieved under application of an electrical field and present validation experiments. Our approach may be used to get more insight into the transmittance behavior of PDLCs affecting the contrast ratio.

Idioma originalInglés
Número de artículo084505
PublicaciónJournal of Applied Physics
Volumen103
N.º8
DOI
EstadoPublicada - 2008
Publicado de forma externa

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