Molecular orientation effects in nematic liquid crystal cells by an external electric field and their applications to a multisensing system

Marenori Kawamura; Susumu Sato

doi:10.1117/12.365803

14 October 1999 Molecular orientation effects in nematic liquid crystal cells by an external electric field and their applications to a multisensing system

Marenori Kawamura, Susumu Sato

Author Affiliations +

Proceedings Volume 3800, Liquid Crystals III; (1999) https://doi.org/10.1117/12.365803
Event: SPIE's International Symposium on Optical Science, Engineering, and Instrumentation, 1999, Denver, CO, United States

Abstract

The multi-sensing system for detecting external electric fields and decomposition products of SF₆ is proposed by using a nematic liquid crystal (LC) cell sandwiched with two cholesteric LC cells and a corner cube prism coated with dye films. The electric field and the decomposition products can be measured as changes in optical retardations of the nematic LC cell at a selective reflection band of the cholesteric LC and as the absorption changes of the dye films at different wavelength regions outside the selective reflection band, respectively. Furthermore, we discuss the dependence of the sensitivity to the electric field on the molecular orientation and the anchoring strength of the alignment layer in the nematic LC cells.

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Marenori Kawamura and Susumu Sato "Molecular orientation effects in nematic liquid crystal cells by an external electric field and their applications to a multisensing system", Proc. SPIE 3800, Liquid Crystals III, (14 October 1999); https://doi.org/10.1117/12.365803

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