New display based on electrically induced index-matching in an inhomogeneous medium

H. G. Craighead, Julian Cheng, S. Hackwood

Research output: Contribution to journalArticle

156 Scopus citations

Abstract

The operation of a new light modulation device that employs electric field controlled light scattering in an inhomogeneous medium is described. The orientation of a nematic liquid crystal, contained in micrometer sized inclusions in a nonabsorbing solid, is changed to produce a varying refractive index. When the refractive index of the liquid crystal matches that of the solid, the composite medium is nonscattering and transparent. If the refractive indices do not match, the medium is scattering and opaque. High contrast ratios have been measured for transmitted light with a response time of a ∼1 ms. The application of this technique to passive display devices is discussed.

Original languageEnglish (US)
Pages (from-to)22-24
Number of pages3
JournalApplied Physics Letters
Volume40
Issue number1
DOIs
StatePublished - 1982

ASJC Scopus subject areas

  • Physics and Astronomy (miscellaneous)

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