Aggregation-Induced Emission Luminogen-Functionalized Liquid Crystal Elastomer Soft Actuators

2018 ◽  
Vol 51 (12) ◽  
pp. 4516-4524 ◽  
Author(s):  
Li Liu ◽  
Meng Wang ◽  
Ling-Xiang Guo ◽  
Ying Sun ◽  
Xue-Qin Zhang ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Aggregation Induced Emission ◽  
Liquid Crystal Elastomer ◽  
Soft Actuators

scholarly journals Monolithic shape-programmable dielectric liquid crystal elastomer actuators

2019 ◽  
Vol 5 (11) ◽  
pp. eaay0855 ◽  
Author(s):  
Zoey S. Davidson ◽  
Hamed Shahsavan ◽  
Amirreza Aghakhani ◽  
Yubing Guo ◽  
Lindsey Hines ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
High Performance ◽  
Degrees Of Freedom ◽  
New Technologies ◽  
Elastic Anisotropy ◽  
Active Material ◽  
Soft Robotics ◽  
Liquid Crystal Elastomer ◽  
Liquid Crystal Elastomers ◽  
Soft Actuators

Soft robotics may enable many new technologies in which humans and robots physically interact, yet the necessary high-performance soft actuators still do not exist. The optimal soft actuators need to be fast and forceful and have programmable shape changes. Furthermore, they should be energy efficient for untethered applications and easy to fabricate. Here, we combine desirable characteristics from two distinct active material systems: fast and highly efficient actuation from dielectric elastomers and directed shape programmability from liquid crystal elastomers. Via a top-down photoalignment method, we program molecular alignment and localized giant elastic anisotropy into the liquid crystal elastomers. The linearly actuated liquid crystal elastomer monoliths achieve strain rates over 120% per second with an energy conversion efficiency of 20% while moving loads over 700 times the elastomer weight. The electric actuation mechanism offers unprecedented opportunities toward miniaturization with shape programmability, efficiency, and more degrees of freedom for applications in soft robotics and beyond.

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

Thermomechanically active electrodes power work-dense soft actuators

Soft Matter ◽  
2021 ◽  
Author(s):  
Angel Martinez ◽  
Arul Clement ◽  
Junfeng Gao ◽  
Julia Kocherzat ◽  
Mohsen Tabrizi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Liquid Metal ◽  
Chain Extender ◽  
Design Work ◽  
Liquid Crystal Elastomers ◽  
Soft Actuators ◽  
Dense Liquid

The effect of chain extender structure and composition on the properties of liquid crystal elastomers (LCE) is presented. Compositions are optimized to design work-dense liquid metal LCE composites that are operated with 100 mW power.

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.

Quantification of internal strain in bent soft materials by a cholesteric liquid crystal elastomer

2021 ◽  
Author(s):  
Masayuki Kishino ◽  
Norihisa Akamatsu ◽  
Shoichi Kubo ◽  
Kyohei Hisano ◽  
Osamu Tsutsumi ◽  
...  
Keyword(s):  
Liquid Crystal ◽  
Cholesteric Liquid Crystal ◽  
Soft Materials ◽  
Internal Strain ◽  
Liquid Crystal Elastomer
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