Hierarchically Structured and Scalable Artificial Muscles for Smart Textiles
Hierarchically Structured and Scalable Artificial Muscles for Smart Textiles
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用于智能纺织品的分层结构和可扩展的人工肌肉
DOI：
10.1021/acsami.1c16323
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发表时间：
2021-11-08
影响因子：
9.5
通讯作者：
Hu, Xiaorui
中科院分区：
文献类型：
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作者：
Peng, Yangyang;Sun, Fengxin;Hu, Xiaorui
具有优良驱动性能的纤维基人工肌肉作为柔性驱动器的软材料受到了极大的关注;然而，目前纤维基人工肌肉的进展通常受到高成本、苛刻的刺激机制、有限的变形、化学毒性或复杂的制造工艺的困扰，这阻碍了这些人工肌肉在工程和实际应用中的广泛应用。本文提出了一种简单的跨尺度加工策略，将市售的无毒粘胶纤维构造成快速响应和湿度驱动的纱线人工肌肉，其记录的扭转行程为1752度cm（-1），最大旋转速度高达2100 rpm，与由碳基复合材料制成的某些人工肌肉相当。通过理论建模和微观结构表征，讨论了在介观尺度下开始形成的这种出色的致动性能的潜在机制。通过整合不同的纺织技术，通过拓扑编织结构，将所制备的纱线人工肌肉进一步放大为大尺寸的织物肌肉。这些织物肌肉将纱线肌肉的简单运动扩展到更高层次的多样化变形，而无需任何复合系统，复杂的合成加工和组件设计，这使得开发新的基于纤维的人造肌肉用于多功能应用，如智能纺织品和智能系统。
Fiber-based artificial muscles with excellent actuation performance are gaining great attention as soft materials for flexible actuators; however, current advances in fiber-based artificial muscles generally suffer from high cost, harsh stimulation regimes, limiting deformations, chemical toxicity, or complex manufacturing processing, which hinder the widespread application of those artificial muscles in engineering and practical usage. Herein, a facile cross-scale processing strategy is presented to construct commercially available nontoxic viscose fibers into fast responsive and humidity-driven yarn artificial muscles with a recorded torsional stroke of 1752 degrees cm(-1) and a maximum rotation speed up to 2100 rpm, which are comparable to certain artificial muscles made from carbon-based composite materials. The underlying mechanism of such outstanding actuation performance that begins to form at a mesoscale is discussed by theoretical modeling and microstructure characterization. The as-prepared yarn artificial muscles are further scaled up to large-sized fabric muscles through topological weaving structures by integrating different textile technologies. These fabric muscles extend the simple motion of yarn muscles into higher-level diverse deformations without any composite system, complex synthetic processing, and component design, which enables the development of new fiber-based artificial muscles for versatile applications, such as smart textiles and intelligent systems.