材料科学
弹性体
标度系数
复合数
复合材料
纳米线
应变计
拉伤
纳米技术
制作
内科学
替代医学
病理
医学
作者
Sung‐Hun Ha,Jong-Man Kim
标识
DOI:10.1088/1361-665x/abfb82
摘要
Abstract In this work, we present a new class of stretchable strain sensor employing a wavy metal nanowire (mNW)/elastomer composite film. Stretching-induced strain is predominantly concentrated in the valley regions of the wavy composite film following thermal annealing, and self-aligned and periodic mechanical cracks are induced by the strain concentration effect therein. The strain-dependent opening-and-closing process of the cracks supported by the mNW percolation network allows the sensor to exhibit large stretchability (160%) and high mechanosensitivity (gauge factor ≈874.1 at 110%–160% strain) simultaneously. Significant hysteresis is not observed, even when subjected to repeated stretching cycles. The wavy strain sensor is also demonstrated as a motion detector to recognize finger joint motions of a wooden hand model in real time.
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