Digital Texture Voxels for Stretchable Morphing Skin Applications
Digital Texture Voxels for Stretchable Morphing Skin Applications
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DOI：
10.1002/admt.201900260
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发表时间：
2019-08-01
影响因子：
6.8
通讯作者：
Tawfick, Sameh
中科院分区：
文献类型：
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作者：
Lamuta, Caterina;He, Honglu;Tawfick, Sameh
头足类动物的皮肤是3D显示，其中乳头肌肉控制每个体素从皮肤平面突出几毫米，创建分层纹理，并在几分之一秒内集体改变整体皮肤图案。在这项研究中，材料系统能够模仿这种反应，使用机电驱动的扭曲螺旋人工肌肉（TSAMs）。TSAM利用其扭曲几何形状的力学原理，在仅0.02 V mm（-1）的电压下延伸出平面8 mm，对应于2000%的应变。它们是由聚合物纤维缠绕螺旋金属丝制成的。这些致动器被组装在具有所需的柔性电连接的可拉伸皮肤上，以形成数字纹理体素（DTV）阵列。DTV阵列按需产生任意3D表面图案，并提供控制流体动力阻力、伪装和触觉显示的机会。
The skin of the cephalopod is a 3D display, where the papillae muscles control the protrusion of each voxel by several millimeters out of the skin plane, create hierarchical textures, and collectively change the overall skin pattern in a fraction of a second. A material system capable of mimicking this response using electromechanical actuation of twisted spiral artificial muscles (TSAMs) is presented in this study. TSAMs leverage the mechanics of their twisted geometry to extend out of plane by 8 mm, corresponding to 2000% strain using a voltage of only 0.02 V mm(-1). They are made of polymer fibers wrapped with a helical metal wire. These actuators are assembled on a stretchable skin with the required flexible electrical connections to form an array of digital texture voxels (DTVs). The DTV array produces arbitrary 3D surface patterns on-demand, and provides opportunities to control hydrodynamic drag, camouflage, and haptic displays.