Research Process on Magneto⁃responsive Liquid Crystalline Elastomers

doi:10.19894/j.issn.1000-0518.210316

Chinese Journal of Applied Chemistry ›› 2021, Vol. 38 ›› Issue (10): 1299-1309.DOI: 10.19894/j.issn.1000-0518.210316

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Research Process on Magneto⁃responsive Liquid Crystalline Elastomers

Shuai ZHANG¹, Yang YANG², Yan JI¹(), Yen WEI¹()

¹Department of Chemistry，Tsinghua University，Beijing 100084，China
²Institute of Nuclear and New Energy Technology，Tsinghua University，Beijing 100084，China

Received:2021-06-28 Accepted:2021-08-12 Published:2021-10-01 Online:2021-10-15
Contact: Yan JI,Yen WEI
About author:jiyan@mail.tsinghua.edu.cn; weiyen@tsinghua.edu.cn；
Supported by:
National Natural Science Foundation of China(21788102)

Abstract

Abstract:

Liquid crystalline elastomers （LCEs） are excellent polymer materials that can respond to external stimuli. By adding various functional materials into LCEs， the composites can respond to various stimuli such as light， electricity and magnetic field， which greatly expand the application range of LCEs. The magnetic response gradually attracts interests due to its characteristics such as remote non-contact control， fast response， good biocompatibility and strong penetrating power. In this paper， the research status and application prospects of magneto-responsive LCEs are discussed.

Key words: Magnetic response, Liquid crystalline elastomers, Composites

CLC Number:

O631

Shuai ZHANG, Yang YANG, Yan JI, Yen WEI. Research Process on Magneto⁃responsive Liquid Crystalline Elastomers[J]. Chinese Journal of Applied Chemistry, 2021, 38(10): 1299-1309.

Figures/Tables 6

Fig.1 The magnetic actuation of LCEs that with magnetothermal effect［32］

Fig.2 Confocal images of the magneto-responsive LCEs with different Fe3O4 particle contents and viability ratio of NIH3T3 fibroblasts growing on collagen coated LCEs［41］A. Confocal images of the magneto-responsive LCEs with mass percent 0.2 % particle content （a—c）； Confocal images of the magneto-responsive LCEs with mass percent 0.5 % particle content （d—f）； B. Viability ratio of NIH3T3 fibroblasts growing on collagen coated LCEs

Fig.3 Magnetic movement of magneto-responsive LCE particles［56］A.Circle-like movement of a photoresponsive magneto-responsive LCE particle and reversible photoresponsive photoactuation of 12.6% at 70 ℃. B.Circle-like transportation of a piece of plastic of a thermoresponsive magneto-responsive LCE particle

Fig. 4 Magneto-responsive LCEs hat can self-adapt to a changing environment［58］A.An untethered in situ reconfgurable soft miniature machine that self-adapts to different environments/terrains by exhibiting distinct locomotion modes； B.Experimental demonstrations of a vine-plant-inspired flament and a reconfgurable magnetic spring

Fig. 5 Magnetic nanoparticles modified by chemical groups are bonded to LCEs［63-64，66］A.Schematic representation of the LC-attached ferrite composite； B.Quasi-spherical oleate-coated ferrite nanoparticles； C.Depiction of magnetic LCEs synthesis and fnal structure

Fig. 6 Magnetic response is employed to conduct the different locomotions［69-70］A.Schematic illustration of the cargo pick up， transport， rotation， and release of the untethered rotational soft robotic gripper. B.Complex dual-responsive shape-morphing behaviors of the bimorph material in response to the external temperature change and magnetic field， applied separated and concurrently

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Research Process on Magneto⁃responsive Liquid Crystalline Elastomers

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