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可逆扭曲的不稳定性驱动了线虫和软机器人的超快跳跃
bioRxiv : the preprint server for biology
|June 25, 2024
概括
昆虫病原性线虫 (EPNs) 使用独特的曲弹性不稳定性,或扭曲,以提高它们的跳跃能力. 这种可控的扭曲使它们能够储存和释放能量,从而达到令人印象深刻的跳跃高度.
科学领域:
- 生物力学 生物力学
- 软机器人软机器人 软机器人软机器人
- 遗体学 遗体学 是一个学科.
背景情况:
- 昆虫病原性线虫 (EPNs) 在跳跃前表现出曲不稳定性,假设可以提高发射性能.
- 在EPN中这种扭曲不稳定性的确切机制和好处仍然在很大程度上未被证明.
研究的目的:
- 提供证据表明,扭曲不稳定对于提高EPN跳跃性能至关重要.
- 探索EPN控制跳跃方向和能量储存的机制.
- 为了研究利用这种不稳定性来开发生物灵感软机器人应用的潜力.
主要方法:
- 对EPN跳动行为和面积比率调制的观察研究.
- 开发和使用一个生物灵感软跳模型 (SoftJM).
- 计算模拟用于分析跳跃动态和控制机制.
- 原子力显微镜 (AFM) 用于量化皮质硬度.
主要成果:
- EPNs主动形成一个液体锁定循环,然后快速打开它以实现20个身体长度 (BL) 的跳跃,并具有高功率输出.
- 扭曲的不稳定性增强了肌肉力量的能量储存,使控制的双向跳跃成为可能.
- 一个经过硬度修改的SoftJM实现了大约25BL的跳跃.
结论:
- 扭曲不稳定性,通常是故障模式,是EPN实现高效和可控跳跃的关键机制.
- 利用扭曲不稳定性为设计无肢软机器人提供了一种新的策略,这些机器人能够在复杂的地形上移动.
- 这项研究为开发用于行星探索和其他需要控制跳跃的应用程序的机器人提供了见解.
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