ALIGNMENT INSTABILITY INDUCED BY IRRADIATION OF VISIBLE LIGHT IN FRUSTOELECTRIC LIQUID CRYSTALLINE CELLS SHOWING THE V-SHAPED SWITCHING

2001 ◽  
Vol 366 (1) ◽  
pp. 785-795
Author(s):  
San-Seong Seomun ◽  
Naoki Hayashi ◽  
Tatsuhisa Kato ◽  
Atsuo Fukuda ◽  
Jagdish K. Vij
Keyword(s):  
Visible Light ◽  
Liquid Crystalline

Hexaarylbiimidazoles(HABI)-functionalized lyotropic liquid crystalline systems as visible light-responsive materials

2020 ◽  
Vol 579 ◽  
pp. 379-390 ◽  
Author(s):  
Shiyang Jia ◽  
Bim Graham ◽  
Ben Capuano ◽  
Angel Tan ◽  
Adrian Hawley ◽  
...  
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Responsive Materials

Study of Casting Self-Colored Liquid Crystalline Solid Films of Hydroxypropyl Cellulose

2013 ◽  
Vol 341-342 ◽  
pp. 217-220
Author(s):  
Qin Xing Zhang ◽  
Li Qian ◽  
Li Xia Wang ◽  
S. Stuto ◽  
Chang Yu Shen
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Solution Concentration ◽  
Hydroxypropyl Cellulose ◽  
Crystalline Solid ◽  
Selective Reflection ◽  
Solid Films ◽  
Colored Coating ◽  
Cooling Velocity ◽  
Cholesteric Liquid Crystalline

Solutions of lyotropic cholesteric liquid crystalline hydroxypropyl cellulose (HPC) in water would be self-colored due to the selective reflection of visible light, depending on the solution concentration. Colored coating of the liquid crystalline aqueous HPC solutions was attempted to apply. HPC solid films were found which could cast from the liquid crystalline solutions at different conditions such as solution concentration and different drying temperature. Experiments show that both solution concentration and cooling velocity play an important effect in controlling the color of HPC films.

Intrinsically Visible Light-Responsive Liquid Crystalline Physical Gels Driven by a Halogen Bond

Langmuir ◽  
2020 ◽  
Vol 36 (40) ◽  
pp. 11873-11879
Author(s):  
Xun Tong ◽  
Xiaoyu Zhao ◽  
Yuan Qiu ◽  
Hong Wang ◽  
Yonggui Liao ◽  
...  
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Halogen Bond

A reactive azobenzene liquid-crystalline block copolymer as a promising material for practical application of light-driven soft actuators

2015 ◽  
Vol 3 (26) ◽  
pp. 6621-6626 ◽  
Author(s):  
Jiu-an Lv ◽  
Wei Wang ◽  
Wei Wu ◽  
Yanlei Yu
Keyword(s):  
Block Copolymer ◽  
Visible Light ◽  
Liquid Crystalline ◽  
Promising Material ◽  
Practical Application ◽  
Reactive Liquid ◽  
Soft Actuators

The freestanding fiber and film comprised of a reactive liquid-crystalline block copolymer were fabricated by facile techniques such as dip-drawing or casting and thereafter immersion to undergo the post-crosslinking. Both of the CLCP fiber and film showed reversible bending and unbending behaviors in response to UV and visible light, respectively.

Wide-angle lasing from photonic crystal nanostructures of a liquid-crystalline blue phase

2019 ◽  
Vol 7 (21) ◽  
pp. 6433-6439 ◽  
Author(s):  
Guan-Yu Zhuo ◽  
Shu-Wei Huang ◽  
Shih-Hung Lin
Keyword(s):  
Liquid Crystals ◽  
Photonic Crystal ◽  
Photonic Crystals ◽  
Visible Light ◽  
Liquid Crystalline ◽  
Wide Angle ◽  
Phase Liquid ◽  
Blue Phase

Wide-angle lasing emitting dye-doped blue-phase liquid crystals (DDBPLCs), which are analogous to photonic crystals, have been demonstrated to selectively reflect visible light.

OPTICAL ANISOTROPY AND FOUR POSSIBLE ORIENTATIONS OF A NEMATIC LIQUID CRYSTAL ON THE SAME FILM OF A PHOTOCHROMIC CHIRAL SMECTIC POLYMER

2000 ◽  
Vol 09 (01) ◽  
pp. 1-10 ◽  
Author(s):  
LEV M. BLINOV ◽  
RICCARDO BARBERI ◽  
MIKHAIL V. KOZLOVSKY ◽  
VLADIMIR V. LAZAREV ◽  
MARIA P. DE SANTO
Keyword(s):  
Liquid Crystal ◽  
Visible Light ◽  
Nematic Liquid Crystal ◽  
Optical Anisotropy ◽  
Liquid Crystalline ◽  
Uv Light ◽  
Glassy State ◽  
Electric Vector ◽  
Exciting Light ◽  
Linearly Polarized

Spin coated films of a chiral comb-like liquid crystalline copolymer containing azobenzene chromophores in its side chains are optically isotropic in their twisted smectic-like glassy state. In contact with a nematic liquid crystal (5CB, E7, MBBA) they provide a degenerate planar orientation. When irradiated by unpolarized UV light, they orient the same nematics homeotropically. Treated with linearly polarized UV light they orient nematics homogeneously with the director along the electric vector of the exciting light. After a combined irradiation first with unpolarized UV light and then with linearly polarized visible light, the films again provide a homogeneous liquid crystal orientation, this time with the director perpendicular to the visible light electric vector. The phenomena observed are related to the light induced optical anisotropy. Two main processes are responsible for the anisotropy (1) a UV light depletion of trans-isomers of the azobenzene chromophores from the chosen direction and (2) a reorientation of the chromophores by polarized visible light.

Allyl sulfide-based visible light-induced dynamically reshaped liquid crystalline elastomer/SWCNT nanocomposites capable of multimode NIR photomechanical actuations

2020 ◽  
Vol 44 (26) ◽  
pp. 10902-10910
Author(s):  
Zhongying Wu ◽  
Pin Cheng ◽  
Weiguang Zhao ◽  
Jianglin Fang ◽  
Tianchi Xu ◽  
...  
Keyword(s):  
Visible Light ◽  
Liquid Crystalline ◽  
Composite Films ◽  
Allyl Sulfide ◽  
Covalent Crosslinks

The fully light-driven LCE/SWCNT composite films with exchangeable covalent crosslinks possess reconfigurability and recyclability, enabling shrinking, bending and curling motions.

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