期刊
NANO RESEARCH
卷 14, 期 11, 页码 3969-3976出版社
TSINGHUA UNIV PRESS
DOI: 10.1007/s12274-021-3322-2
关键词
smart wearable clothing; textile piezoelectric pressure sensor (T-PEPS); ZnO nanorods; conductive rGO@polyester (PET) fabrics
类别
资金
- National First-Class Discipline Program of Light Industry Technology and Engineering
- National Key Research and Development Program of China [2018YFC2000903, 2019YFC1711701]
- National Natural Science Foundation of China [21975107, 61803364, U1913216]
- Fundamental Research Funds for the Central Universities [JUSRP51724B]
- Shenzhen Fundamental Research and Discipline Layout Project [JCYJ20180302145549896]
The T-PEPS, a textile piezoelectric pressure sensor, has been designed with a novel structural hierarchy based on single-crystalline ZnO nanorods to maintain outstanding output performance while improving wearing comfort. It exhibits a low detection limit of 8.71 Pa, high output voltage up to 11.47 V, and superior mechanical stability, with a sensitivity of 0.62 V dot kPa(-1) in the pressure range of 0-2.25 kPa. The T-PEPS is capable of detecting human movements and can be scaled up for applications in wearable sensor platforms and self-powered devices.
With the increasing demand for smart wearable clothing, the textile piezoelectric pressure sensor (T-PEPS) that can harvest mechanical energy directly has attracted significant attention. However, the current challenge of T-PEPS lies in remaining the outstanding output performance without compromising its wearing comfort. Here, a novel structural hierarchy T-PEPS based on the single-crystalline ZnO nanorods are designed. The T-PEPS is constructed with three layers mode consisting of a polyvinylidene fluoride (PVDF) membrane, the top and bottom layers of conductive rGO polyester (PET) fabrics with self-orientation ZnO nanorods. As a result, the as-fabricated T-PEPS shows low detection limit up to 8.71 Pa, high output voltage to 11.47 V and superior mechanical stability. The sensitivity of the sensor is 0.62 V center dot kPa(-1) in the pressure range of 0-2.25 kPa. Meanwhile, the T-PEPS is employed to detect human movements such as bending/relaxation motion of the wrist, bending/stretching motion of each finger. It is demonstrated that the T-PEPS can be up-scaled to promote the application of wearable sensor platforms and self-powered devices.
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