Programming touch-me-not knot topologies for rapid and diverse leaping and flying motions · Y. Hong et al.
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We exploit knot topologies in LCE composite fibers consisting of an LCE shell and a flexible Kevlar-monofilament core to create insect-scale, soft actuators for extreme leaping and flying. Akin to the action of the mechanism in a touch-me-not seedpod from the jewelweed (Impatiens capensis or I. pallida) plant, a mild mechanical, thermal (~90°C), or photothermal stimulus destabilizes the knot. This destabilization causes the knot to snap open and launch, converting the stored elastic energy into kinetic energy. By coupling knot topology with the molecular alignment, we program the pattern and sequence of posttakeoff motions, enabling flipping, spinning, and staged gymnastic rotations. Yaoye Hong1, Weixuan Liu2, Yinding Chi1, Antonio Proctor Martinez1, Bingzhi He1, Ziyun Zhang1, Kun-Yu Wang1, Alexander Y. …
摘自《科学》(Science)第392卷 第6796期 · 2026年4月23日,Y. Hong et al.。仅引用开头一小段供了解文章,版权归原刊所有,全文请阅读原刊。