Multivalued Inverse Design: Multiple Surface Geometries from One Flat Sheet
Multivalued Inverse Design: Multiple Surface Geometries from One Flat Sheet
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DOI：
10.1103/physrevlett.127.128001
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发表时间：
2021-09-13
影响因子：
8.6
通讯作者：
Cohen, Itai
中科院分区：
文献类型：
--
作者：
Griniasty, Itay;Mostajeran, Cyrus;Cohen, Itai
设计可以变形成三维形状的平板是一个密集的研究领域，应用于微机械、软机器人和医疗植入物。到目前为止，这种薄片被设计成采用单一目标形状。在这里，我们表明，通过在整个薄板上不均匀地施加各向异性变形，可以设计出在不同的激励下可以变形为多个表面几何形状的单个薄板。我们方法的关键是发展一种分析方法来解决这个多值反问题。这样的板材为制造机器打开了大门，这些机器可以通过在多个形状之间循环转换来执行复杂的任务。作为概念验证，我们设计了一个简单的游泳者，能够在低雷诺数的流体中移动。
Designing flat sheets that can be made to deform into three-dimensional shapes is an area of intense research with applications in micromachines, soft robotics, and medical implants. Thus far, such sheets were designed to adopt a single target shape. Here, we show that through anisotropic deformation applied inhomogeneously throughout a sheet, it is possible to design a single sheet that can deform into multiple surface geometries upon different actuations. The key to our approach is development of an analytical method for solving this multivalued inverse problem. Such sheets open the door to fabricating machines that can perform complex tasks through cyclic transitions between multiple shapes. As a proof of concept, we design a simple swimmer capable of moving through a fluid at low Reynolds numbers.