Beijing Key Laboratory of Micro-Nano Energy and Sensor, Beijing Institute of Nanoenergy and Nanosystems , Chinese Academy of Sciences , Beijing 100083 , P. R. China.
School of Nanoscience and Technology , University of Chinese Academy of Sciences , Beijing 100049 , P. R. China.
ACS Appl Mater Interfaces. 2019 Sep 18;11(37):34251-34257. doi: 10.1021/acsami.9b12195. Epub 2019 Sep 6.
Wearable electronics containing different functional sensors with abilities to meet people's daily needs are highly desirable. Here, a stretchable triboelectric nanogenerator (TENG) for wearable electronics is demonstrated. By stacking two layers of silicone rubbers embedded with silver nanowires (AgNWs) and a Ni foam as electrodes, respectively, the fabricated TENG can serve as a new type of sensor that is wearable, stretchable, skin-friendly, noninvasive, and durable. It can convert mechanical deformation into electric signals. Deformation like stretching and extruding of the TENG results in interlayer rubbing because of inhomogeneous strain, producing triboelectric charges that can induce voltage signals in the electrodes in response to the deformation. On the basis of the principle, a joint sensor based on the TENG is demonstrated, which can generate different output voltages according to the bending degrees of the joint. Furthermore, a three-dimensional sensor integrating three TENGs is fabricated to depict the deformations of different muscle areas. The output voltages of the three TENGs can be simultaneously monitored to reflect the deformation degrees of different muscle areas.
可穿戴电子产品中包含具有满足人们日常需求能力的各种功能传感器，因此备受期待。在这里，展示了一种用于可穿戴电子产品的可拉伸摩擦纳米发电机 (TENG)。通过堆叠两层分别嵌入银纳米线 (AgNWs) 和泡沫镍的硅橡胶作为电极，所制造的 TENG 可用作一种新型传感器，具有可穿戴、可拉伸、亲肤、非侵入性和耐用等特点。它可以将机械变形转换为电信号。由于不均匀的应变，TENG 的拉伸和挤压等变形会导致层间摩擦，产生摩擦电荷，从而根据变形在电极中产生电压信号。基于这一原理，展示了一种基于 TENG 的关节传感器，它可以根据关节的弯曲程度产生不同的输出电压。此外，还制造了一个集成三个 TENG 的三维传感器，以描绘不同肌肉区域的变形。可以同时监测三个 TENG 的输出电压，以反映不同肌肉区域的变形程度。
