Journal
JOURNAL OF MATERIALS SCIENCE & TECHNOLOGY
Volume 43, Issue -, Pages 175-188Publisher
JOURNAL MATER SCI TECHNOL
DOI: 10.1016/j.jmst.2019.11.010
Keywords
Electronic skin; Flexible pressure sensor; Piezoresistivity; Capacitive pressure sensor
Funding
- National Natural Science Foundation of China [61775032, 61475134, 11604042]
- Fundamental Research Funds for the Central Universities [N170405007, N180406002, N180408018, N160404009]
- 111 Project [B16009]
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Electronic skin (e-skin) and flexible wearable devices are currently being developed with broad application prospects. Transforming electronic skin (e-skin) into true skinis the ultimate goal. Tactile sensing is a fundamental function of skin and the development of high-performance flexible pressure sensors is necessary to realize thus. Many reports on flexible pressure sensors have been published in recent years, including numerous studies on improving sensor performance, and in particular, sensitivity. In addition, a number of studies have investigated self-healing materials, multifunctional sensing, and so on. Here, we review recent developments in flexible pressure sensors. First, working principles of flexible pressure sensors, including piezoresistivity, capacitance, and piezoelectricity, are introduced, as well as working mechanisms such as triboelectricity. Then studies on improving the performance of piezoresistive and capacitive flexible pressure sensors are discussed, in addition to other important aspects of this intriguing research field. Finally, we summarize future challenges in developing novel flexible pressure sensors. (C) 2020 Published by Elsevier Ltd on behalf of The editorial office of Journal of Materials Science & Technology.
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