Dec 01, 2013 · Liquid-crystal elastomers with exchangeable links xLCEs are mouldable, allow for easy processing and alignment, and can be subsequently altered. LETTERS PUBLISHED ONLINE: XX MONTH XXXX DOI:10.1038/NMAT3812 Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds Zhiqiang Pei1, Yang Yang1, Qiaomei Chen1, Eugene M. Liquid-crystal elastomers with exchangeable links xLCEs are mouldable, allow for easy processing and alignment, and can be subsequently altered through remoulding with different stress patterns.
Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds - NASA/ADS Liquid-crystal elastomers LCEs are a class of actively moving polymers with remarkable practical potential for converting external stimuli into mechanical actuation. Liquid-crystal elastomers with exchangeable links xLCEs are mouldable, allow for easy processing and alignment, and can be subsequently altered through remoulding with different stress patterns, thus opening the way to practical xLCE actuators and artiﬁcial muscles. Surprisingly, instead of. Oct 01, 2019 · Previous work in electrically controlled soft structures such as most dielectric elastomer actuators DEAs has shown much faster speed and higher energy efficiency compared to the LCE-based tubular actuators developed here. Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds.
Jun 21, 2013 · Liquid crystalline elastomers LCEs exhibit a number of remarkable physical effects, including the unique, high-stroke reversible mechanical actuation when triggered by external stimuli. This article reviews some recent exciting developments in the field of LCEs materials with an emphasis on their utilization in actuator applications. Jan 28, 2017 · The differences in these classes of polymers were recently reviewed in detail with regards to properties of mechanical actuators. Also, these liquid crystal elastomers have been the subject of several reviews and books. Furthermore, it should be noted that liquid crystal elastomers are often divided into subclasses by the location of the. A liquid crystalline elastomer–carbon nanotube LCE‐CNT composite displays a reversible shape change property in response to light. The development of some systems such as tactile devices requires localised actuation of this material.
Oct 04, 2019 · Liquid-crystal molecules orient locally in response to external fields. When long-chain liquid-crystalline molecules are crosslinked together, changes in local orientation can lead to significant volume changes. Ware et al. made efficient microactuators that can change their shape from flat to three-dimensional structures see the Perspective by Verduzco. Microfluidic syntheses have become a well-known method for the fabrication of liquid crystalline elastomer LCE actuators in the last few years 1, 2, 3.This approach not only enables the production of a large number of well-actuating particles but also allows the fabrication of shapes and morphologies which are not accessible by other methods.
This study presents a novel two-stage thiol-acrylate Michael addition-photopolymerization TAMAP reaction to prepare main-chain liquid-crystalline elastomers LCEs with facile control over network structure and programming of an aligned monodomain. Tailored LCE networks were synthesized using. The bilayer structure consisting of thermal-responsive liquid crystal elastomers LCEs and other polymer materials with stretchable heaters has attracted much attention in applications of soft actuators and soft robots due to its ability to generate large deformations when subjected to heat stimuli. Azobenzene-Containing Liquid Single Crystal Elastomers for Photoresponsive Artificial Muscles. Yang Y, Chen Q, Terentjev EM, Wei Y, Ji Y 2014 Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds. 2015 Azobenzene-Containing Liquid Single Crystal Elastomers for Photoresponsive Artificial Muscles. In: Thakur.
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. Liquid-Crystalline Elastomers LCEs LCEs comprise a class of actively moving polymers that can exhibit reversible mechanical actuation in response to a stimulus. These polymers combine the properties of amorphous thermoset elastomers entropy elasticity with liquid crystals self-organization to achieve a wide range of tunable active properties.
Pei Z Q, Yang Y, Chen Q M, et al. Mouldable liquid-crystalline elastomer actuators with exchangeable covalent bonds[J]. Nature Materials, 2014, 131: 36-41.  Pelrine R, Kornbluh R, Kofod G. High-strain actuator materials based on dielectric elastomers[J]. Jun 20, 2019 · Crosslinked liquid-crystalline polymers CLCPs show macroscopic deformation along with a change in molecular order, which is triggered by various stimuli such as heat, electricity, and light.
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