Tactile-Direction-Sensitive and Stretchable Electronic Skins Based on Human-Skin-Inspired Interlocked Microstructures
Tactile-Direction-Sensitive and Stretchable Electronic Skins Based on Human-Skin-Inspired Interlocked Microstructures
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DOI：
10.1021/nn505953t
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发表时间：
2014-12-01
期刊：
影响因子：
17.1
通讯作者：
Ko, Hyunhyub
中科院分区：
文献类型：
--
作者：
Park, Jonghwa;Lee, Youngoh;Ko, Hyunhyub
具有多方向力感测能力的可拉伸电子皮肤在机器人、假肢和康复设备中非常重要。受人类皮肤表皮-真皮脊中发现的互锁微结构的启发，压阻互锁微圆顶阵列被用于应力方向敏感的可拉伸电子皮肤。在这里，我们表明，这些阵列具有高灵敏度的各种机械刺激，包括正常，剪切，拉伸，弯曲和扭转力的检测能力。此外，互锁微圆顶阵列的独特几何形状使得能够区分各种机械刺激，因为阵列根据施加的力的方向表现出不同的变形水平，从而提供不同的感觉输出模式。此外，我们表明，电子皮肤附着在人体皮肤的手臂和手腕区域能够区分各种机械刺激施加在不同的方向，并可以选择性地监测不同的强度和方向的气流和振动。
Stretchable electronic skins with multidirectional force-sensing capabilities are of great importance in robotics, prosthetics, and rehabilitation devices. Inspired by the interlocked microstructures found in epidermal-dermal ridges in human skin, piezoresistive interlocked microdome arrays are employed for stress-direction-sensitive, stretchable electronic skins. Here we show that these arrays possess highly sensitive detection capability of various mechanical stimuli including normal, shear, stretching, bending, and twisting forces. Furthermore, the unique geometry of interlocked microdome arrays enables the differentiation of various mechanical stimuli because the arrays exhibit different levels of deformation depending on the direction of applied forces, thus providing different sensory output patterns. In addition, we show that the electronic skins attached on human skin in the arm and wrist areas are able to distinguish various mechanical stimuli applied in different directions and can selectively monitor different intensities and directions of air flows and vibrations.