Electric-field-induced motion of polymer cholesteric liquid-crystal flakes in a moderately conductive fluid

2002 ◽  
Vol 41 (25) ◽  
pp. 5362 ◽  
Author(s):  
Tanya Z. Kosc ◽  
Kenneth L. Marshall ◽  
Stephen D. Jacobs ◽  
John C. Lambropoulos ◽  
Sadeg M. Faris
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Cholesteric Liquid Crystal ◽  
Conductive Fluid ◽  
Induced Motion ◽  
Liquid Crystal Flakes

Motion of doped-polymer-cholesteric liquid crystal flakes in a direct-current electric field

2008 ◽  
Vol 103 (9) ◽  
pp. 094907 ◽  
Author(s):  
A. Trajkovska Petkoska ◽  
T. Z. Kosc ◽  
K. L. Marshall ◽  
K. Hasman ◽  
S. D. Jacobs
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Direct Current ◽  
Cholesteric Liquid Crystal ◽  
Direct Current Electric Field ◽  
Liquid Crystal Flakes ◽  
Doped Polymer ◽  
Current Electric Field

scholarly journals Optimized Soft Lithography Method for Polymer Cholesteric Liquid Crystal Flakes Fabrication

Micromachines ◽  
2019 ◽  
Vol 10 (7) ◽  
pp. 441 ◽  
Author(s):  
Guanqing Zhou ◽  
Sunqian Liu ◽  
Wei Liu ◽  
Dong Yuan ◽  
Guofu Zhou
Keyword(s):  
Optical Properties ◽  
Liquid Crystal ◽  
Polyvinyl Alcohol ◽  
Soft Lithography ◽  
Cholesteric Liquid Crystal ◽  
Release Time ◽  
Pdms Mold ◽  
Speed Up ◽  
Liquid Crystal Flakes

Polymer cholesteric liquid crystal (PCLC) flakes are gaining increasing interest for a wide variety of applications because of their unique optical properties and capabilities. Soft lithography is the most effective way to fabricate regularly shaped PCLC flakes. However, it is not easy to peel the flakes from the mold without breaking them. In order to peel the PCLC flakes from the patterned polydimethylsiloxane (PDMS) mold in a convenient way, in this paper, a method of coating a layer of polyvinyl alcohol (PVA) on a PDMS mold was proposed. The influence of the thickness of the PVA layer on the shape of the PCLC flakes and the release time from the PDMS mold were investigated. The results show that the presence of the PVA layer can speed up the release of the PCLC flakes and help maintain the shape effectively. Notably, the utilization of a PVA layer makes the PDMS mold recyclable. The influence of PCLC flake shape was also studied. This work will promote the development of switchable PCLC flake-based technologies.

Fluorescence and lasing in an electric-field-induced periodic structure of a cholesteric liquid crystal

2019 ◽  
Vol 49 (8) ◽  
pp. 754-761 ◽  
Author(s):  
N M Shtykov ◽  
S P Palto ◽  
B A Umanskii ◽  
D O Rybakov ◽  
I V Simdyankin
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Periodic Structure ◽  
Cholesteric Liquid Crystal

Electric Field Dependence of Lasing Wavelength in Cholesteric Liquid Crystal with an In-Plane Helix Alignment

2010 ◽  
Vol 516 (1) ◽  
pp. 182-189 ◽  
Author(s):  
Yo Inoue ◽  
Yuko Matsuhisa ◽  
Hiroyuki Yoshida ◽  
Ryotaro Ozaki ◽  
Hiroshi Moritake ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Electric Field ◽  
Field Dependence ◽  
Cholesteric Liquid Crystal ◽  
Lasing Wavelength ◽  
Electric Field Dependence
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