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phase-transforming mechanical metamaterials with dynamically controllable shape-locking performance

National Science Review 2023年第9期10卷 270-285页

作者： Yiding Zhong Wei Tang Huxiu Xu Kecheng Qin Dong Yan Xujun Fan Yang Qu Zhaoyang Li Zhongdong Jiao Huayong Yang Jun Zou State Key Laboratory of Fluid Power and Mechatronic Systems Zhejiang University School of Mechanical Engineering Zhejiang University Institute of Process Equipment College of Energy EngineeringZhejiang University

Active mechanical metamaterials with customizable structures and deformations,active reversible deformation,dynamically controllable shape-lo cking performance and stretchability are highly suitable for applications in soft robotics and flexible electronics,yet it is challenging to integrate them due to their mutual ***,we introduce a class of phase-transforming mechanical metamaterials(PMMs) that integrate the above *** arranging basic actuating units according to the designed pattern configuration and positional relationship,PMMs can customize complex and diverse structures and ***-vapor phase transformation provides active reversible large deformation while a silicone matrix offers *** contained carbonyl iron powder endows PMMs with dynamically controllable shape-lo cking performance,thereby achieving magnetically assisted shape locking and energy storing in different working *** build a theoretical model and finite element simulation to guide the design process of PMMs,so as to develop a variety of PMMs with different functions suitable for different applications,such as a programmed PMM,reconfigurable antenna,soft lens,soft mechanical memory,biomimetic hand,biomime tic flytrap and self-contained soft *** are applicable to achieve various 2D deformations and 2D-to-3D deformations,and integrate multiple properties,including customizable structures and deformations,active reversible deformation,rapid reversible shape locking,adjustable energy storing and stretchability,which could open a new application avenue in soft robotics and flexible ele ctronics.

关键词： active mechanical metamaterials shape locking energy storage liquid–vapor phase transform soft robotics

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