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<p>The amoeba can flow like liquid to change its morphology to effectively capture and excrete various prey. Inspired by the amoeba, we present a liquid metal universal gripper capable of effective grasping and active releasing of targets with various shapes, sizes, and stiffnesses in liquid and air. We unveil a surface tension induced active release mechanism enabling tunable active release of micro-objects. The gripper operates across 14 orders of magnitude in weight (from 10<sup>−12 </sup>g to 200 g) and achieves a low gripping contact pressure of ~10 Pa for handling delicate items. It can capture and release moving objects within milliseconds without precise alignment. An environment-agnostic surface activity design extends its functionality to a non-electrolyte environment. The gripper offers notable performance metrics over existing robotic grippers in multiscale operation, low contact pressure, and tunable releasing speed, representing a notable solution for living organisms and microscale objects.</p>

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Liquid metal universal grippers for gentle, adaptable, multiscale manipulation

  • 期刊论文

  • 出版模式：

    开放获取

  • 发表日期：

    2026年3月6日

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  • Xuanhan Chen,
  • Mingkui Zhang,
  • Lu Cao,
  • Dinggang Fan,
  • Long Wang,
  • Yue Chen,
  • Hao Lin,
  • Mingyuan Sun,
  • Shiyuan Tong,
  • Yuguo Deng,
  • Bing Xiao,
  • Weihua Li,
  • Bing Hu,
  • Shiwu Zhang,
  • Shi-Yang Tang,
  • Lining Sun,
  • Xiangpeng Li

摘要

The amoeba can flow like liquid to change its morphology to effectively capture and excrete various prey. Inspired by the amoeba, we present a liquid metal universal gripper capable of effective grasping and active releasing of targets with various shapes, sizes, and stiffnesses in liquid and air. We unveil a surface tension induced active release mechanism enabling tunable active release of micro-objects. The gripper operates across 14 orders of magnitude in weight (from 10−12 g to 200 g) and achieves a low gripping contact pressure of ~10 Pa for handling delicate items. It can capture and release moving objects within milliseconds without precise alignment. An environment-agnostic surface activity design extends its functionality to a non-electrolyte environment. The gripper offers notable performance metrics over existing robotic grippers in multiscale operation, low contact pressure, and tunable releasing speed, representing a notable solution for living organisms and microscale objects.