Electrically induced bandwidth broadening in polymer stabilized cholesteric liquid crystals

2011 ◽  
Vol 110 (5) ◽  
pp. 053109 ◽  
Author(s):  
V. T. Tondiglia ◽  
L. V. Natarajan ◽  
C. A. Bailey ◽  
M. M. Duning ◽  
R. L. Sutherland ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized ◽  
Bandwidth Broadening

Electrically tunable infrared reflector with adjustable bandwidth broadening up to 1100 nm

2016 ◽  
Vol 4 (16) ◽  
pp. 6064-6069 ◽  
Author(s):  
Hitesh Khandelwal ◽  
Michael G. Debije ◽  
Timothy J. White ◽  
Albertus P. H. J. Schenning
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystals ◽  
Ethylene Glycol ◽  
Cholesteric Liquid Crystals ◽  
Anisotropic Liquid ◽  
Polymer Stabilized ◽  
Bandwidth Broadening

A tunable infrared reflector has been fabricated using polymer stabilized cholesteric liquid crystals containing a negative dielectric, anisotropic liquid crystal and a long and flexible ethylene glycol twin crosslinker.

scholarly journals Bandwidth broadening induced by ionic interactions in polymer stabilized cholesteric liquid crystals

2014 ◽  
Vol 4 (7) ◽  
pp. 1465 ◽  
Author(s):  
Vincent P. Tondiglia ◽  
Lalgudi V. Natarajan ◽  
Christopher A. Bailey ◽  
Michael E. McConney ◽  
Kyung Min Lee ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Ionic Interactions ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized ◽  
Bandwidth Broadening

Color-Tunable Mirrors Based on Electrically Regulated Bandwidth Broadening in Polymer-Stabilized Cholesteric Liquid Crystals

ACS Photonics ◽  
2014 ◽  
Vol 1 (10) ◽  
pp. 1033-1041 ◽  
Author(s):  
Kyung Min Lee ◽  
Vincent P. Tondiglia ◽  
Michael E. McConney ◽  
Lalgudi V. Natarajan ◽  
Timothy J. Bunning ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Color Tunable ◽  
Polymer Stabilized ◽  
Bandwidth Broadening

scholarly journals Effect of Ion Concentration on the Electro-Optic Response in Polymer-Stabilized Cholesteric Liquid Crystals

Crystals ◽  
2020 ◽  
Vol 11 (1) ◽  
pp. 7
Author(s):  
Kyung M. Lee ◽  
Timothy J. Bunning ◽  
Timothy J. White ◽  
Michael E. McConney ◽  
Nicholas P. Godman
Keyword(s):  
Liquid Crystals ◽  
Polymer Network ◽  
Ion Concentration ◽  
Cholesteric Liquid Crystals ◽  
Reflection Band ◽  
Ion Density ◽  
Electro Optic ◽  
Order Of Magnitude ◽  
Polymer Stabilized ◽  
Bandwidth Broadening

We have previously reported that the application of a DC field can adjust the position and/or bandwidth of the selective reflection notch in polymer-stabilized cholesteric liquid crystals (PSCLCs). The proposed mechanism of these electro-optic (EO) response is ion-facilitated electromechanical deformation of the polymer stabilizing network. Accordingly, the concentration of ions trapped within the polymer network should considerably influence the EO response of PSCLC. Our prior studies have indicated that photoinitiators can increase ion density in PSCLC by an order of magnitude. Here, we isolate the contribution of ionic impurities associated with liquid crystal monomers (LCMs) by utilizing initiator-less polymerization. PSCLCs prepared with LCM with low ion concentration show bandwidth broadening of the reflection band whereas PSCLCs prepared with LCM with high ion concentration exhibit a red shifting tuning of the reflection band. The extent of the tuning or bandwidth broadening of the CLC reflection band depends on the concentration of LCMs and the chirality of the LCM.

scholarly journals Deformation-free switching of polymer-stabilized cholesteric liquid crystals by low-temperature polymerization

2016 ◽  
Vol 6 (3) ◽  
pp. 705 ◽  
Author(s):  
Hoekyung Kim ◽  
Yo Inoue ◽  
Junji Kobashi ◽  
Yasutaka Maeda ◽  
Hiroyuki Yoshida ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Low Temperature ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized

Enhanced reflection band broadening in polymer stabilized cholesteric liquid crystals with negative dielectric anisotropy

2018 ◽  
Vol 267 ◽  
pp. 120-126 ◽  
Author(s):  
Hossein Nemati ◽  
Shiyi Liu ◽  
Alireza Moheghi ◽  
Vincent P. Tondiglia ◽  
Kyung Min Lee ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Dielectric Anisotropy ◽  
Band Broadening ◽  
Cholesteric Liquid Crystals ◽  
Reflection Band ◽  
Polymer Stabilized

Broadband Reflection in Polymer‐Stabilized Cholesteric Liquid Crystals via Thiol–Acrylate Chemistry

2019 ◽  
Vol 58 (20) ◽  
pp. 6698-6702 ◽  
Author(s):  
Wei Hu ◽  
Mei Chen ◽  
Qian Wang ◽  
Lanying Zhang ◽  
Xiaotao Yuan ◽  
...  
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized

Photosensitivity of reflection notch tuning and broadening in polymer stabilized cholesteric liquid crystals

Soft Matter ◽  
2016 ◽  
Vol 12 (4) ◽  
pp. 1256-1261 ◽  
Author(s):  
Kyung Min Lee ◽  
Vincent P. Tondiglia ◽  
Timothy J. White
Keyword(s):  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized

Optical Properties of Polymer Stabilized Cholesteric Liquid Crystals

2002 ◽  
Vol 277 (1) ◽  
pp. 75-83 ◽  
Author(s):  
V. Laux ◽  
F. Roussel ◽  
J.-M. Buisine
Keyword(s):  
Optical Properties ◽  
Liquid Crystals ◽  
Cholesteric Liquid Crystals ◽  
Polymer Stabilized
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