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Soft Electronic Skin for Multi-Site Damage Detection and Localization

机译：柔软的电子皮肤，可进行多站点损伤检测和定位

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摘要

Soft-matter technologies have a potentially central role in wearable computing, human-machine interaction, soft robotics, and other emerging applications that require highly compliant and elastic materials. However, these technologies are largely composed of soft materials that are susceptible to damage and loss of functionality when exposed to real-world loading conditions. To address this critical challenge, we present a soft responsive material that, like natural nervous tissue, is able to identify, compute, and signal damage in real-time. The soft composite material contains liquid metal droplets dispersed in an elastomer matrix that rupture when mechanical damage occurs (e.g., compression, fracture, or puncture), creating electrically conductive pathways. The resulting change in local conductivity can be actively sensed and coupled with actuation, communication, and computation in a manner that presents new opportunities to identify damage, calculate severity, and respond to prevent failure within soft material systems. When placed on the surface of a soft, humanoid-like inflatable structure, the skin can detect puncture damage and control the operation of an embedded fan to prevent deflation.
机译：软物质技术在可穿戴计算，人机交互，软机器人以及其他需要高度顺应性和弹性材料的新兴应用中具有潜在的核心作用。但是，这些技术主要由柔软的材料组成，当暴露于实际的负载条件下时，这些材料容易受到损坏和功能丧失。为了解决这一关键挑战，我们提供了一种软响应材料，该材料像自然神经组织一样，能够实时识别，计算并发出信号损害。柔软的复合材料包含分散在弹性体基质中的液态金属小滴，当发生机械损坏（例如压缩，断裂或刺穿）时破裂，从而形成导电路径。可以有效地感测由此产生的局部电导率变化，并将其与驱动，通信和计算耦合，从而提供新的机会来识别损坏，计算严重性并做出响应以防止软材料系统内的故障。当放置在柔软的类人动物般的可充气结构的表面上时，皮肤可以检测出穿刺损坏并控制嵌入式风扇的运行以防止放气。

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