State Key Laboratory of ASIC and System, Shanghai Institute of Intelligent Electronics & Systems, School of Microelectronics, Fudan University, 200433 Shanghai, People's Republic of China.
Yiwu Research Institute of Fudan University, Chengbei Road, Yiwu City, 322000 Zhejiang, People's Republic of China.
Nanotechnology. 2022 Apr 1;33(25). doi: 10.1088/1361-6528/ac5ee6.
Stretchable strain sensor, an important paradigm of wearable sensor which can be attached onto clothing or even human skin, is widely used in healthcare, human motion monitoring and human-machine interaction. Pattern-available and facile manufacturing process for strain sensor is pursued all the time. A carbon nanotube (CNT)/silver nanowire (AgNW)-based stretchable strain sensor fabricated by a facile process is reported here. The strain sensor exhibits a considerable Gauge factor of 6.7, long-term durability (>1000 stretching cycles), fast response and recovery (420 ms and 600 ms, respectively), hence the sensor can fulfill the measurement of finger movement. Accordingly, a smart glove comprising a sensor array and a flexible printed circuit board is assembled to detect the bending movement of five fingers simultaneously. Moreover, the glove is wireless and basically fully flexible, it can detect the finger bending of wearer and display the responses distinctly on an APP of a smart phone or a host computer. Our strain senor and smart glove will broaden the materials and applications of wearable sensors.
可拉伸应变传感器是可穿戴传感器的重要范例，可附着在衣物甚至人体皮肤上，广泛应用于医疗保健、人体运动监测和人机交互等领域。人们一直在追求具有图案可用性和易于制造工艺的应变传感器。本文报道了一种通过简单工艺制备的基于碳纳米管（CNT）/银纳米线（AgNW）的可拉伸应变传感器。该应变传感器具有相当大的应变系数为 6.7，长期耐用性（>1000 次拉伸循环），快速响应和恢复（分别为 420 ms 和 600 ms），因此传感器可以满足手指运动的测量。相应地，组装了一个包含传感器阵列和柔性印刷电路板的智能手套，以同时检测五个手指的弯曲运动。此外，该手套无线且基本完全灵活，可检测佩戴者手指的弯曲，并在智能手机或主机的应用程序上清晰显示响应。我们的应变传感器和智能手套将拓宽可穿戴传感器的材料和应用。
