Application of broadband infrared reflector based on cholesteric liquid crystal polymer bilayer film to windows and its impact on reducing the energy consumption in buildings

2014 ◽  
Vol 2 (35) ◽  
pp. 14622 ◽  
Author(s):  
Hitesh Khandelwal ◽  
Roel C. G. M. Loonen ◽  
Jan L. M. Hensen ◽  
Albertus P. H. J. Schenning ◽  
Michael G. Debije
Keyword(s):  
Liquid Crystal ◽  
Energy Consumption ◽  
Cholesteric Liquid Crystal ◽  
Liquid Crystal Polymer ◽  
Bilayer Film ◽  
Crystal Polymer

scholarly journals Multiple-Color Reflectors Using Bichiral Liquid Crystal Polymer Films and Their Applications in Liquid Crystal Displays

Polymers ◽  
2020 ◽  
Vol 12 (12) ◽  
pp. 3031
Author(s):  
Cheng-Kai Liu ◽  
Ming-Hsien Li ◽  
Chi-Lun Ting ◽  
Andy Ying-Guey Fuh ◽  
Ko-Ting Cheng
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Polymer Films ◽  
Cholesteric Liquid Crystal ◽  
Liquid Crystal Polymer ◽  
Utilization Efficiency ◽  
Light Sources ◽  
Practical Applications ◽  
Crystal Polymer ◽  
Pitch Length

Multiple-color reflectors using bichiral liquid crystal polymer films (BLCPFs) are investigated. The BLCPFs consist of alternate layers of two different single-pitch cholesteric liquid crystal (CLC) layers, named CLC#A and CLC#B. The thickness of each CLC layer equals its single pitch length. The optical properties in terms of reflections, reflection-wavelength ranges, and distributions of reflection spectra of the BLCPFs that result from the fixed pitch length of CLC#A along with the decrease of the pitch length of CLC#B are qualitatively simulated and investigated. The results indicate that the above optical properties of the BLCPFs depend on the LC birefringence and pitch lengths of CLC#A and CLC#B layers. The concept of fabrication method of the BLCPFs by using polymerizable CLCs and thin films of poly(vinylalcohol) or photoalignment materials is discussed. They have potential practical applications in functional color filters, asymmetrical transmission systems, etc., owing to the multiple reflection bands of BLCPFs. Moreover, the BLCPFs, which can enhance the color gamut and light-utilization efficiency of light sources/LC displays, are reported herein.

Optical Responses of Azo Dye Doped Cholesteric Liquid Crystal-Polymer Composite System

2009 ◽  
Vol 511 (1) ◽  
pp. 85/[1555]-95/[1565]
Author(s):  
Vinita Dhulia ◽  
Gupta Sureshchandra J. ◽  
Pradnya Prabhu ◽  
Bhakti Yadav
Keyword(s):  
Liquid Crystal ◽  
Polymer Composite ◽  
Azo Dye ◽  
Composite System ◽  
Cholesteric Liquid Crystal ◽  
Liquid Crystal Polymer ◽  
Optical Responses ◽  
Crystal Polymer
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