Dependence of transmission spectra on director orientation in the photonic crystal with a liquid crystal layer

2012 ◽  
Vol 8 (4) ◽  
pp. 277-279 ◽  
Author(s):  
Li-tao Song ◽  
Jie He ◽  
Hua-lei Wang ◽  
Yi-ang Han ◽  
Tao Li
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Transmission Spectra ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Director Orientation

Optical Performance of Photonic Crystal Filter with Liquid Crystal Layer

2010 ◽  
Vol 37 (11) ◽  
pp. 2834-2837 ◽  
Author(s):  
宋立涛 Song Litao ◽  
何杰 He Jie ◽  
王华磊 Wang Hualei ◽  
韩毅昂 Han Yiang ◽  
李涛 Li Tao
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Crystal Layer ◽  
Optical Performance ◽  
Liquid Crystal Layer

Control over the transmission spectrum of a one-dimensional photonic crystal with a liquid-crystal layer

2007 ◽  
Vol 52 (3) ◽  
pp. 134-138 ◽  
Author(s):  
S. A. Myslivets ◽  
V. A. Gunyakov ◽  
V. P. Gerasimov ◽  
V. Ya. Zyryanov ◽  
S. Ya. Vetrov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Transmission Spectrum ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
One Dimensional ◽  
Dimensional Photonic Crystal

Angular tuning of defect modes spectrum in the one-dimensional photonic crystal with liquid-crystal layer

2007 ◽  
Vol 24 (3) ◽  
pp. 297-302 ◽  
Author(s):  
V. G. Arkhipkin ◽  
V. A. Gunyakov ◽  
S. A. Myslivets ◽  
V. Ya. Zyryanov ◽  
V. F. Shabanov
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Defect Modes ◽  
One Dimensional ◽  
Dimensional Photonic Crystal ◽  
The One

Transmission Modes with Varying Incident Angle for Photonic Crystal Filter with Liquid Crystal Layer

2011 ◽  
Vol 48 (10) ◽  
pp. 102301
Author(s):  
何杰 He Jie ◽  
宋立涛 Song Litao ◽  
王华磊 Wang Hualei ◽  
韩毅昂 Han Yi′ang ◽  
李涛 Li Tao
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Incident Angle ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Transmission Modes

The Effects of Film Thickness, Light Polarization, and Light Intensity on the Light Transmission Characteristics of Thermochromic Liquid Crystals

2006 ◽  
Vol 129 (3) ◽  
pp. 372-378 ◽  
Author(s):  
Timothy B. Roth ◽  
Ann M. Anderson
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Light Intensity ◽  
Temperature Measurement ◽  
Light Transmission ◽  
Transmission Spectra ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
Thermochromic Liquid Crystal ◽  
Thermochromic Liquid Crystals

Thermochromic liquid crystal materials change their crystalline structure and optical properties with temperature, making them useful in temperature measurement applications. This paper presents the results of a study to develop a temperature measurement system that uses light transmission through thermochromic liquid crystals instead of light reflection. We painted Hallcrest R25C10W sprayable liquid crystals on a clear surface and placed it in a spectrophotometer. The amount of light transmitted at monochromatic wavelengths from 400nm to 700nm was measured for temperatures from 25°C to 55°C under conditions of nonpolarized, linearly polarized, and cross-polarized light, for three light intensity levels, and three liquid crystal layer thicknesses. As the temperature was increased the amount of light transmitted through the liquid crystal layer increased. When the liquid crystals are in their active range the transmission spectra exhibit an s-curve shape and the percent of light transmitted through the liquid crystals at a fixed temperature increases with increasing wavelength. We detected significant changes in the transmission spectra for temperatures from 27°C to 48°C, whereas when used with reflected light the thermochromic liquid crystals are useful over a significantly smaller range. As the thickness of the thermochromic liquid crystal layer increases or as the incoming light intensity decreases, the amount of light transmitted through the liquid crystals decreases. We also investigated the effects of temperature overheat on the transmission spectra and found that heating the thermochromic liquid crystals above their active range increases the amount of light transmission. However, when the liquid crystals are cooled below their active range they return to their original state. We have analyzed the spectrophotometer data in a number of ways including: (a) total amount of light transmitted, (b) amount of red, green, and blue light transmitted; and (c) spectral curve shape characteristics (peak transmission, inflection wavelength and wavelength for peak transmission) all as a function of temperature. A linear relationship exists between temperature and all of these variables which we believe can be exploited for the development of a charge coupled light camera based light transmission system for temperature measurement.

scholarly journals Tunable bi-functional photonic device based on one-dimensional photonic crystal infiltrated with a bistable liquid-crystal layer

2011 ◽  
Vol 19 (8) ◽  
pp. 7349 ◽  
Author(s):  
Chong-Yin Wu ◽  
Yi-Hong Zou ◽  
Ivan Timofeev ◽  
Yu-Ting Lin ◽  
Victor Ya. Zyryanov ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Crystal Layer ◽  
Liquid Crystal Layer ◽  
One Dimensional ◽  
Photonic Device ◽  
Dimensional Photonic Crystal

scholarly journals Reconfigurable Unidirectional Photonic Crystal Using Liquid Crystal Layer

2017 ◽  
Vol 9 (1) ◽  
pp. 1-9 ◽  
Author(s):  
Aya El-metwally ◽  
Nihal F. F. Areed ◽  
Mohamed Farhat O. Hameed ◽  
Salah S. A. Obayya
Keyword(s):  
Liquid Crystal ◽  
Photonic Crystal ◽  
Crystal Layer ◽  
Liquid Crystal Layer
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