scholarly journals Programmable liquid crystal elastomer microactuators prepared via thiol–ene dispersion polymerization

Soft Matter ◽  
2020 ◽  
Vol 16 (21) ◽  
pp. 4908-4911
Author(s):  
Xiaohong Liu ◽  
Xinglong Pan ◽  
Michael G. Debije ◽  
Johan P. A. Heuts ◽  
Dirk J. Mulder ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Dispersion Polymerization ◽  
Liquid Crystal Elastomer

Programmable, narrowly dispersed, 10 micron-sized, liquid crystalline elastomer actuators were first prepared via thiol–ene dispersion polymerization and then deformed in a PVA film, followed by photopolymerization of the residual acrylate groups.

Beam steering by liquid crystal elastomer fibres

Soft Matter ◽  
2017 ◽  
Vol 13 (45) ◽  
pp. 8590-8596 ◽  
Author(s):  
S. Nocentini ◽  
D. Martella ◽  
D. S. Wiersma ◽  
C. Parmeggiani
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Beam Steering ◽  
Liquid Crystal Elastomer ◽  
Plane Direction

A liquid crystalline elastomer based beam steerer is demonstrated able to address the impinging signal in every in-plane direction.

scholarly journals Continuous spinning aligned liquid crystal elastomer fibers with a 3D printer setup

Soft Matter ◽  
2021 ◽  
Author(s):  
Xueyan Lin ◽  
Mohand O Saed ◽  
Eugene Terentjev
Keyword(s):  
Liquid Crystal ◽  
Liquid Crystalline ◽  
Response Times ◽  
3D Printer ◽  
Small Thickness ◽  
Liquid Crystal Elastomer

Fibrous liquid crystalline elastomers (LCE) are an attractive variant of LCE-based actuators due to their small thickness, leading to faster response times to stimuli, as well as the increased mechanical...

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

4D Printing of Hygroscopic Liquid Crystal Elastomer Actuators

Small ◽  
2021 ◽  
pp. 2100910
Author(s):  
Keumbee Kim ◽  
Yuanhang Guo ◽  
Jaehee Bae ◽  
Subi Choi ◽  
Hyeong Yong Song ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
4D Printing ◽  
Liquid Crystal Elastomer

Effect of stretching angle on the stress plateau behavior of main-chain liquid crystal elastomers

Soft Matter ◽  
2021 ◽  
Vol 17 (11) ◽  
pp. 3128-3136
Author(s):  
Suzuka Okamoto ◽  
Shinichi Sakurai ◽  
Kenji Urayama
Keyword(s):  
Liquid Crystal ◽  
Main Chain ◽  
Stress Plateau ◽  
Liquid Crystal Elastomer ◽  
Ultimate Elongation ◽  
Liquid Crystal Elastomers

Stretching angle for a main-chain liquid crystal elastomer has pronounced effects on the width of the stress plateau as well as the ultimate elongation, while it has no effect on the plateau height.

scholarly journals Design of Tunable Holographic Liquid Crystalline Diffraction Gratings

Sensors ◽  
2020 ◽  
Vol 20 (23) ◽  
pp. 6789
Author(s):  
Katarzyna A. Rutkowska ◽  
Anna Kozanecka-Szmigiel
Keyword(s):  
Liquid Crystal ◽  
Communication Networks ◽  
Optical Communication ◽  
Liquid Crystalline ◽  
Incident Light ◽  
Diffraction Gratings ◽  
Lagrange Equations ◽  
Experimental Conditions ◽  
Molecular Distribution ◽  
Polarization Gratings

Tunable diffraction gratings and phase filters are important functional devices in optical communication and sensing systems. Polarization gratings, in particular, capable of redirecting an incident light beam completely into the first diffraction orders may be successfully fabricated in liquid crystalline cells assembled from substrates coated with uniform transparent electrodes and orienting layers that force a specific molecular distribution. In this work, the diffraction properties of liquid crystal (LC) cells characterized by a continually rotating cycloidal director pattern at the cell substrates and in the bulk, are studied theoretically by solving a relevant set of the Euler-Lagrange equations. The electric tunability of the gratings is analyzed by estimating the changes in liquid crystalline molecular distribution and thus in effective birefringence, as a function of external voltage. To the best of our knowledge, such detailed numerical calculations have not been presented so far for liquid crystal polarization gratings showing a cycloidal director pattern. Our theoretical predictions may be easily achieved in experimental conditions when exploiting, for example, photo-orienting material, to induce a permanent LC alignment with high spatial resolution. The proposed design may be for example, used as a tunable passband filter with adjustable bandwidths, thus allowing for potential applications in optical spectroscopy, optical communication networks, remote sensing and beyond.

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