The growing prominence of wearable electronics has paved the way toward stretchable and flexible strain sensors. Stress signals extracted from the human body are crucial parameters to monitor health conditions. High‐sensitivity shape‐adaptive strain sensors have become the main challenge considering the curvilinear surfaces of the practical applications. Herein, a highly sensitive performance‐enhanced stretchable strain sensor based on the combination of a wrinkled structure and microcracks is reported on. The strain sensor is fabricated by transfer printing gold thin films with controllable microcracks onto prestretched soft substrates. Maximum strain of 40% and a maximum gauge factor of 11.54 are demonstrated using the prototype device. More importantly, the device shows excellent time response characteristics and stable performance in the subsequent stability test. It is proved that the fabrication method to generate the mixed microcracks and wrinkled structure is efficient and the corresponding device is an excellent stretchable strain sensor. The device is an attractive candidate that meets the needs of human health monitoring.

中文翻译：

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通过将微裂纹与起皱的结构相结合来增强软应变传感器的性能

可穿戴电子设备的日益增长为可拉伸和灵活的应变传感器铺平了道路。从人体提取的压力信号是监测健康状况的关键参数。考虑到实际应用中的曲线表面，高灵敏度的形状自适应应变传感器已成为主要挑战。本文报道了一种基于皱纹结构和微裂纹的高灵敏度，性能增强的可拉伸应变传感器。应变传感器是通过将具有可控微裂纹的金薄膜转印到预拉伸的软基板上而制成的。使用原型设备演示了最大应变为40％，最大应变系数为11.54。更重要的是，该器件在随后的稳定性测试中显示出出色的时间响应特性和稳定的性能。证明了产生混合的微裂纹和皱纹结构的方法是有效的，并且相应的装置是优良的可拉伸应变传感器。该设备是满足人体健康监测需求的有吸引力的候选产品。