Chinese Journal of Liquid Crystals and Displays, Volume. 40, Issue 6, 836(2025)

Preparation and photo-magnetic actuation properties of bilayer composite liquid crystal elastomers

Yujie CAI and Huaiping CONG*
Author Affiliations
  • College of Chemistry and Chemical Engineering, Hefei University of Technology, Hefei 230009, China
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    Figures & Tables(5)
    Design and fabrication of PFe-LCE films. (a) Fabrication of POSS@Fe3O4 NPs; (b) Chemical structures of LCs and thermal-initiator; (c) Schematic illustration of the preparation process of PFe-LCE.
    Characterization of POSS@Fe3O4 NPs. (a, b) Photographs of the magnetic response of Fe3O4 NPs and POSS@Fe3O4 NPs solutions; (c~e) SEM images and size distribution of Fe3O4 NPs and POSS@Fe3O4 NPs; (f) HRTEM images of POSS@Fe3O4 NPs and the corresponding distribution of C, Na, Fe, and Si elements.
    Characterization of PFe-LCE. (a) Optical images of the top and bottom side of PFe-LCE; (b, c) POM images of PFe-LCE; (d) SEM images of PFe-LCE cross sections; (e, f) SEM images of the top and bottom side of PFe-LCE; (g) Elemental mappings of C, O, Fe and Si elements at cross section and bottom side of PFe-LCE; (h, i) SEM images of PFe-LCE and Fe-LCE cross sections at high magnification; (j) Stress-strain curves of pure LCE, Fe-LCE, and PFe-LCE.
    Actuation mechanism and performance characterization of PFe-LCE. (a, b) Schematic diagram and images of the structure and bending process of PFe-LCE strips; (c) Deflection angles curves of PFe-LCE strips under UV, NIR and Vis irradiation; (d~f) UV response speed, Young’s modulus, temperature changes and infrared thermograms of PFe-LCE under NIR irradiation with different POSS@Fe3O4 NPs loadings; (g) Cyclic actuation curves of Fe-LCE and PFe-LCE under periodic UV-NIR irradiation; (h) Deflection angles of PFe-LCE with different POSS@Fe3O4 NPs loadings under a fixed magnetic field, and photograph of the magnetic response performance of PFe-LCE strips at a loading of 4%(mass fraction).
    Design and application of the transport robot. (a) Schematic illustration of transport robot design; (b, c) Images of the shape deformation of the transport robot under UV and NIR irradiation, respectively; (d, e) Images and schematic of the magneto-driven movement of the transport robot after UV irradiation (loaded/unloaded); (f, g) Design and demonstration of the transport robot in cargo handing application.
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    Yujie CAI, Huaiping CONG. Preparation and photo-magnetic actuation properties of bilayer composite liquid crystal elastomers[J]. Chinese Journal of Liquid Crystals and Displays, 2025, 40(6): 836

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    Paper Information

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    Received: Mar. 20, 2025

    Accepted: --

    Published Online: Jul. 14, 2025

    The Author Email: Huaiping CONG (hpcong@hfut.edu.cn)

    DOI:10.37188/CJLCD.2025-0063

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