Self-Powered Inhomogeneous Strain Sensor Enabled Joint Motion and Three-Dimensional Muscle Sensing
Self-Powered Inhomogeneous Strain Sensor Enabled Joint Motion and Three-Dimensional Muscle Sensing
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自供电非均匀应变传感器支持关节运动和三维肌肉感应
DOI：
10.1021/acsami.9b12195
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发表时间：
2019-09-18
影响因子：
9.5
通讯作者：
Wang, Zhong Lin
中科院分区：
文献类型：
--
作者：
Wang, Haiming;Li, Ding;Wang, Zhong Lin
可穿戴电子产品包含不同功能的传感器，能够满足人们的日常需求，这是非常理想的。在这里，展示了一种用于可穿戴电子设备的可伸缩摩擦电纳米发电机(TENG)。通过将嵌入银纳米线(AgNW)的硅橡胶和泡沫镍分别堆叠在一起作为电极，制成的Teng可以作为一种可穿戴、可拉伸、皮肤友好、非侵入性和经久耐用的新型传感器。它可以将机械变形转换为电信号。像拉伸和挤压这样的变形由于不均匀的应变而导致层间摩擦，产生摩擦电荷，可以在电极中感应出响应于变形的电压信号。在此基础上，设计了一种基于Teng的关节传感器，该传感器可以根据关节的弯曲程度产生不同的输出电压。此外，还制作了一个集成了三个腾格斯的三维传感器来描述不同肌肉区域的变形。可以同时监测三个腾格的输出电压，以反映不同肌肉区域的变形程度。
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.