Thermal modulation of selective transmittance spectra by combination of cholesteric liquid crystal cells

Akifumi Ogiwara; Hiroshi Kakiuchida

doi:10.1117/12.2237090

23 September 2016 Thermal modulation of selective transmittance spectra by combination of cholesteric liquid crystal cells

Akifumi Ogiwara, Hiroshi Kakiuchida

Author Affiliations +

Proceedings Volume 9940, Liquid Crystals XX; 99401I (2016) https://doi.org/10.1117/12.2237090
Event: SPIE Organic Photonics + Electronics, 2016, San Diego, California, United States

Abstract

The effects of the combination of cholesteric liquid crystal (CLC) cells on selective wavelength are investigated by the spectroscopic analysis under thermal modulation. The several kinds of CLC cells are formed by using the chiral dopants with different magnitudes and signs of helical twisting power (HTP). The combination of CLC cells with different temperature dependence shows that the infrared light range longer than 700nm is widely reflected and the visible light is little modulated when the temperature increase from 25 °C to 45 °C. The results demonstrate that the thermal modulation of selective transmittance spectra is controllable by the combination of CLC cells with different temperature dependence.

Citation Download Citation

Akifumi Ogiwara and Hiroshi Kakiuchida "Thermal modulation of selective transmittance spectra by combination of cholesteric liquid crystal cells", Proc. SPIE 9940, Liquid Crystals XX, 99401I (23 September 2016); https://doi.org/10.1117/12.2237090

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