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<p>Liquid crystal elastomers (LCEs) have emerged as a promising material platform for soft robotics, effectively integrating programmable molecular orientation with the inherent flexibility of elastomers. This unique combination enables significant, reversible deformations responding to external stimuli, including heat, light, electric, and magnetic fields. Due to these characteristics, LCEs serve as an ideal material system for bridging biological principles with engineered soft robotic applications, enabling the development of adaptive and multifunctional systems with enhanced biomimetic capabilities. However, the mechanisms of bioinspired motion and the effective integration of biomimetic functions in LCE-based robots remain insufficiently explored. This review systematically examines recent advances in LCE-based biomimetic soft robots, focusing on multimodal actuation strategies, including contraction, crawling, rolling, jumping, swimming, and plant-inspired motions. It highlights integrated functional enhancements achieved via innovative material compositions, structural designs, and advanced manufacturing techniques. These developments have enabled novel robotic functionalities, including programmable actuation, self-healing and recycling, color morphing and camouflage, and tunable bioinspired surface characteristics.</p>

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Bioinspired soft robots based on liquid crystal elastomers: from multimodal actuation to functional integration

  • 期刊论文

  • 发表日期：

    2026年3月31日

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  • Zhentian Xu,
  • Dan Zhou,
  • Hui Liu,
  • Yangyang Zhu,
  • Guoqiang Song,
  • Linjun Zhang,
  • Hao Tang,
  • Wei Gao,
  • Jiangang Ma,
  • Lie Chen

摘要

Liquid crystal elastomers (LCEs) have emerged as a promising material platform for soft robotics, effectively integrating programmable molecular orientation with the inherent flexibility of elastomers. This unique combination enables significant, reversible deformations responding to external stimuli, including heat, light, electric, and magnetic fields. Due to these characteristics, LCEs serve as an ideal material system for bridging biological principles with engineered soft robotic applications, enabling the development of adaptive and multifunctional systems with enhanced biomimetic capabilities. However, the mechanisms of bioinspired motion and the effective integration of biomimetic functions in LCE-based robots remain insufficiently explored. This review systematically examines recent advances in LCE-based biomimetic soft robots, focusing on multimodal actuation strategies, including contraction, crawling, rolling, jumping, swimming, and plant-inspired motions. It highlights integrated functional enhancements achieved via innovative material compositions, structural designs, and advanced manufacturing techniques. These developments have enabled novel robotic functionalities, including programmable actuation, self-healing and recycling, color morphing and camouflage, and tunable bioinspired surface characteristics.