Wideband reflection wavelength tuning by bending of cholesteric liquid crystal elastomer films

2021 ◽  
Vol 129 (16) ◽  
pp. 164701
Author(s):  
Masayuki Kishino ◽  
Norihisa Akamatsu ◽  
Ryo Taguchi ◽  
Shoichi Kubo ◽  
Kyohei Hisano ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Wavelength Tuning ◽  
Liquid Crystal Elastomer

Quantification of internal strain in bent soft materials by a cholesteric liquid crystal elastomer

2021 ◽  
Author(s):  
Masayuki Kishino ◽  
Norihisa Akamatsu ◽  
Shoichi Kubo ◽  
Kyohei Hisano ◽  
Osamu Tsutsumi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Soft Materials ◽  
Internal Strain ◽  
Liquid Crystal Elastomer

Optical Properties of Cholesteric Liquid Crystal Elastomer Film

2021 ◽  
Vol 888 ◽  
pp. 49-55
Author(s):  
Hong Yu Liu ◽  
Xiao Yan Wang ◽  
Xiang Yu Zang ◽  
Mei Tian
Keyword(s):  
Differential Scanning Calorimetry ◽  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Cross Linking ◽  
Scanning Calorimetry ◽  
X Ray ◽  
Liquid Crystal Elastomer ◽  
Chemical Structures ◽  
Optical Micrograph ◽  
Infrared Spectrometer

A series of liquid crystal elastomer (LCE) films (ABC films) were prepared by polymerization of polymethylhydrosiloxane (PMHS), liquid crystal (LC) monomer cholesterol 4-(allyloxy) benzoate (MB) and cross-linking agent 4'-(undec-10-enoyloxy)-[1,1'-biphenyl]-4-yl dodec-11-enoate (MC) . The chemical structures and LC properties of the monomers and polymers were characterised by Fourier Transform Infrared Spectrometer (FTIR), differential scanning calorimetry (DSC), thermogravimetric analysis (TG), polarized optical micrograph (POM) and X-ray diffractometer (XRD). MB is a cholesteric LC and MC is a smectic LC. The ABC films are cholesteric LCEs. The temperature at which 5% weight loss occurred for the ABC films are around 300 °C. The glass transition temperature of ABC films increases with the increase of LC monomer MB content. The ABC films have a strong absorption around 200-330nm in the ultraviolet (UV) region, and the absorption range does not change with temperature.

scholarly journals Wavelength-tuning and band-broadening of a cholesteric liquid crystal induced by a cyclic chiral azobenzene compound

2016 ◽  
Vol 6 (10) ◽  
pp. 3145 ◽  
Author(s):  
H. B. Lu ◽  
X. Y. Xie ◽  
J. Xing ◽  
C. Xu ◽  
Z. Q. Wu ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Wavelength Tuning ◽  
Band Broadening

Thermal and electrical wavelength tuning of Bragg reflection with ultraviolet light absorbers in polymer-stabilized cholesteric liquid crystals

2018 ◽  
Vol 6 (45) ◽  
pp. 12377-12385 ◽  
Author(s):  
Amid Ranjkesh ◽  
Tae-Hoon Yoon
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Electric Field ◽  
Ultraviolet Light ◽  
Bragg Reflection ◽  
Cholesteric Liquid Crystal ◽  
Wavelength Tuning ◽  
Cholesteric Liquid Crystals ◽  
Light Absorbers ◽  
Polymer Stabilized

A dual thermal and electrical polymer-stabilized cholesteric liquid crystal has been fabricated by using ultraviolet light absorbers. The Bragg reflection can be autonomously controlled by temperature and manually by an electric field.

Dispersion of proton spin-lattice relaxation in a cholesteric liquid crystal

1983 ◽  
Vol 44 (10) ◽  
pp. 1179-1184 ◽  
Author(s):  
M. Vilfan ◽  
R. Blinc ◽  
J. Dolinšek ◽  
M. Ipavec ◽  
G. Lahajnar ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Lattice Relaxation ◽  
Proton Spin ◽  
Spin Lattice Relaxation ◽  
Spin Lattice

Modeling of photo-responsive liquid crystal elastomer actuators

2021 ◽  
Vol 560 ◽  
pp. 441-455
Author(s):  
Jundong Wu ◽  
Wenjun Ye ◽  
Yawu Wang ◽  
Chun-Yi Su
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystal Elastomer

scholarly journals Flow-assisted self-healing of the helical structure in a cholesteric liquid crystal

2021 ◽  
Vol 155 (5) ◽  
pp. 054903
Author(s):  
Jan-Christoph Eichler ◽  
Robert A. Skutnik ◽  
Marco G. Mazza ◽  
Martin Schoen
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Helical Structure ◽  
Self Healing
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