Science Cover: Venus Flytrap Doesn't Rely on Pumps or Muscles, Offers New Actuation Method for Soft Robots
Overview
研究发现捕蝇草闭合不依赖水传输或肌肉，而是通过细胞壁软化释放弹性应力，为软体机器人提供新驱动方式。水传输需38秒，远慢于主动弯曲。来源：Science.org/doi/10.1126/science.aed5051 最新：Science封面报道捕蝇草闭合机制，揭示其通过细胞壁软化释放弹性应力实现快速闭合，为软体机器人提供新驱动方式。水传输需38秒，远慢于主动弯曲。来源：Science.org/doi/10.1126/science.aed5051
Generated from attributed reports · Updated 2 hours ago
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1 attributed source owners. Ownership does not establish independent confirmation. Quantities are reported separately and are never added together.
Reported quantity · time_scale_of_leaf_closure: 0.1 other · Basis not reported
“它的捕虫夹由两片叶瓣和中间一条中脉构成，当表面的感应刚毛在短时间内被连续触碰两次，动作电位会沿叶面扩散，随后约 0.1秒，夹子合上。”
Exact source · revision 1robospeak
Reported quantity · cell_wall_stiffness_reduction_factor: 0.69 other · Basis not reported
“数据区分度很高： 内表皮刚度几乎没有变化，外表皮刚度显著下降，触发后降到原来的0.69倍左右 ，降幅约三成，而且这种软化至少持续一小时。”
Exact source · revision 1robospeak
Reported quantity · cell_wall_youngs_modulus_reduction: 37 other · Basis not reported
“把透射电镜获得的细胞几何、鼓胀度数据和压痕曲线一起放进有限元模型迭代反演，得到了一组具体参数： 膨压约0.77 MPa，细胞壁杨氏模量从64 MPa降到37 MPa，降幅约40% 。”
Exact source · revision 1robospeak
Reported quantity · cell_wall_youngs_modulus_initial_value: 64 other · Basis not reported
“把透射电镜获得的细胞几何、鼓胀度数据和压痕曲线一起放进有限元模型迭代反演，得到了一组具体参数： 膨压约0.77 MPa，细胞壁杨氏模量从64 MPa降到37 MPa，降幅约40% 。”
Exact source · revision 1robospeak
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- RoboSpeak — WeChatSignalScience Cover: Venus Flytrap Doesn't Rely on Pumps or Muscles, Offers New Actuation Method for Soft Robots
A research team revealed the mechanism behind the Venus flytrap's closure of its trapping jaws through multiscale experiments, finding that it does not rely on water transport or muscle contraction, but rather on the rapid softening of the epidermal cell walls, which releases pre-stored elastic stress. This discovery offers a new actuation paradigm for soft robots, enabling rapid and controllable active bending through local material stiffness regulation, bypassing the physical limitations of fluid transport rates.
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