Title

Low loss liquid crystals for infrared applications

Authors

Authors

F. L. Peng; Y. Chen; S. T. Wu; S. Tripathi;R. J. Twieg

Comments

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Abbreviated Journal Title

Liq. Cryst.

Keywords

mid-wave infrared; liquid crystal; low absorption; PHASE-SHIFTER; DISPLAYS; Chemistry, Multidisciplinary; Crystallography; Materials Science, ; Multidisciplinary

Abstract

Seven fluorinated and chlorinated terphenyl compounds intended for mid-wave infrared (MWIR) applications are synthesised and two eutectic mixtures formulated, and their physical properties evaluated. In addition to low absorption, some desirable properties for MWIR applications include wide nematic range, high birefringence, large dielectric anisotropy and low viscosity. The fluorinated terphenyl mixture exhibits a relatively low absorption in the vicinities of lambda~3 mu m, but a fairly strong overtone appears in the 4-5 mu m region. To suppress these overtone absorptions, short-chain chlorinated terphenyl compounds are proven to be useful.

Journal Title

Liquid Crystals

Volume

41

Issue/Number

11

Publication Date

1-1-2014

Document Type

Article

Language

English

First Page

1545

Last Page

1552

WOS Identifier

WOS:000344456600006

ISSN

0267-8292

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