scholarly journals Paintable temperature-responsive cholesteric liquid crystal reflectors encapsulated on a single flexible polymer substrate

2019 ◽  
Vol 7 (24) ◽  
pp. 7395-7398 ◽  
Author(s):  
Hitesh Khandelwal ◽  
Ellen P. A. van Heeswijk ◽  
Albert P. H. J. Schenning ◽  
Michael G. Debije
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Polymer Substrate ◽  
Polymer Layers ◽  
Temperature Responsive ◽  
Flexible Polymer ◽  
Protective Polymer ◽  
Flexible Polymer Substrate

Temperature-responsive photonic cholesteric liquid crystal reflectors deposited on flexible single substrates, encapsulated by protective polymer layers generated by photo-enforced stratification.

Photo-responsive azo-functionalised flexible polymer substrate for liquid crystal alignment

2020 ◽  
Vol 47 (9) ◽  
pp. 1354-1365
Author(s):  
B. Sivaranjini ◽  
K. Mohana ◽  
S. Esakkimuthu ◽  
V. Ganesh ◽  
S. Umadevi
Keyword(s):  
Liquid Crystal ◽  
Polymer Substrate ◽  
Liquid Crystal Alignment ◽  
Flexible Polymer ◽  
Crystal Alignment ◽  
Flexible Polymer Substrate

scholarly journals Polymer Stabilized Cholesteric Liquid Crystal Siloxane for Temperature-Responsive Photonic Coatings

2020 ◽  
Vol 21 (5) ◽  
pp. 1803 ◽  
Author(s):  
Weixin Zhang ◽  
Johan Lub ◽  
Albertus P.H.J. Schenning ◽  
Guofu Zhou ◽  
Laurens T. de Haan
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Cholesteric Liquid Crystal ◽  
Uv Curing ◽  
Blue Shift ◽  
Polymer Coatings ◽  
Chain Extension ◽  
Reflective Coating ◽  
Temperature Responsive ◽  
Polymer Stabilized

Temperature-responsive photonic coatings are appealing for a variety of applications, including smart windows. However, the fabrication of such reflective polymer coatings remains a challenge. In this work, we report the development of a temperature-responsive, infrared-reflective coating consisting of a polymer-stabilized cholesteric liquid crystal siloxane, applied by a simple bar coating method. First, a side-chain liquid crystal oligosiloxane containing acrylate, chiral and mesogenic moieties was successfully synthesized via multiple steps, including preparing precursors, hydrosilylation, deprotection, and esterification reactions. Products of all the steps were fully characterized revealing a chain extension during the deprotection step. Subsequently, the photonic coating was fabricated by bar-coating the cholesteric liquid crystal oligomer on glass, using a mediator liquid crystalline molecule. After the UV-curing and removal of the mediator, a transparent IR reflective polymer-stabilized cholesteric liquid crystal coating was obtained. Notably, this fully cured, partially crosslinked transparent polymer coating retained temperature responsiveness due to the presence of non-reactive liquid-crystal oligosiloxanes. Upon increasing the temperature from room temperature, the polymer-stabilized cholesteric liquid crystal coating showed a continuous blue-shift of the reflection band from 1400 nm to 800 nm, and the shift was fully reversible.

Bendable fuel cells: on-chip fuel cell on a flexible polymer substrate

2009 ◽  
Vol 2 (10) ◽  
pp. 1074 ◽  
Author(s):  
Satoshi Tominaka ◽  
Hiroshi Nishizeko ◽  
Jun Mizuno ◽  
Tetsuya Osaka
Keyword(s):  
Fuel Cells ◽  
Fuel Cell ◽  
Polymer Substrate ◽  
Flexible Polymer ◽  
On Chip ◽  
Flexible Polymer Substrate
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