The properties of conventional materials result from the arrangement of and the interaction between atoms at the nanoscale. Metamaterials have shifted this paradigm by offering property control through structural design at the mesoscale, thus broadening the design space beyond the limits of traditional materials. A family of mechanical metamaterials consisting of soft sheets featuring a patterned array of reconfigurable bistable domes is reported here. The domes in this metamaterial architecture can be reversibly inverted at the local scale to generate programmable multistable shapes and tunable mechanical responses at the global scale. By 3D printing a robotic gripper with energy‐storing skin and a structure that can memorize and compute spatially‐distributed mechanical signals, it is shown that these metamaterials are an attractive platform for novel mechanologic concepts and open new design opportunities for structures used in robotics, architecture, and biomedical applications.

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圆顶图案超材料片

传统材料的特性是由纳米级原子的排列和相互作用产生的。超材料通过介观尺度的结构设计提供性能控制，从而改变了这种范式，从而拓宽了设计空间，超越了传统材料的限制。本文报道了由软片组成的机械超材料系列，该软片具有可重构双稳态圆顶的图案阵列。这种超材料架构中的圆顶可以在局部尺度上可逆地反转，以在全局尺度上生成可编程的多稳态形状和可调的机械响应。通过 3D 打印具有储能皮肤和可以记忆和计算空间分布机械信号的结构的机器人抓手，结果表明这些超材料是新颖机械概念的一个有吸引力的平台，并为机器人技术中使用的结构开辟了新的设计机会，建筑和生物医学应用。