High-Performance Paper-Based Capacitive Flexible Pressure Sensor and Its Application in Human-Related Measurement

• Published in: Nanoscale research letters Vol. 14; no. 1; pp. 183 - 7
• Main Authors: Li, Weizhi, Xiong, Li, Pu, Yueming, Quan, Yong, Li, Shibin
• Format: Journal Article
• Language: English
• Published: New York Springer US 29-05-2019; Springer Nature B.V; SpringerOpen
• Subjects: Capacitive flexible pressure sensor; Chemistry and Materials Science; Electronic devices; Materials Science; Micromachining; Molecular Medicine; Motor task performance; Nano Express; Nanochemistry; Nanoscale Science and Technology; Nanotechnology; Nanotechnology and Microengineering; Nanowires; PDMS; Polydimethylsiloxane; Pressure; Pressure sensors; Robotics; Sensors; Silicone resins; Silver nanowires; Skin; Substrates; Wearable devices; Wearable technology; Capacitive flexible pressure sensor; Silver nanowires; Wearable devices; PDMS
• ISSN: 1931-7573; 1556-276X
• DOI: 10.1186/s11671-019-3014-y

Flexible pressure sensors (FPS) have shown wide applications in artificial robotics, wearable devices, electronic skins, and biomedical systems; however, complicated procedures like micromachining and micromolding are often involved to achieve high performance of the sensor. In this work, a novel capacitive FPS was prepared by using silver nanowire (AgNW)-paper substrates as electrodes and polydimethylsiloxane (PDMS) as dielectrics, and results revealed that the sensitivity and dynamic range of the as-prepared sensor were 1.05 kPa
−1
and 1 Pa to 2 kPa, respectively, which were comparable to the state-of-the-art ones; practical application measurements further indicated that the capacitive FPS was capable of detecting bending, finger tap, and human speech as well as identifying object profile; therefore, it shows good potential for applying in artificial skin and wearable devices.