Highly sensitive and stable printed pressure sensor with microstructured grid arrays. (5th September 2019)

• Record Type: Journal Article
• Authors: Xiao, Yao; Jiang, Shuwen; Liu, Peng; Xue, Zewen; Zhu, Yangyi; Yu, Jiangtao; Qiu, Jing; Zhang, Wanli
• Is Part Of: Smart materials and structures. Volume 28:Number 10(2019:Oct.)
• Publication Date: 2019-09-05
• Subjects: flexible pressure sensor -- printed sensor -- customizable pressure sensor -- medical diagnostic -- health monitor; Smart materials -- Periodicals; Strucural design -- Periodicals; 620.11
• DOI: 10.1088/1361-665X/ab3af6
• Languages: English
• ISSNs: 0964-1726

Abstract

Abstract: Flexible pressure sensors with high sensitivity, broad pressure range and a large array are highly desired for wearable applications. In this work, a flexible pressure sensor with a polyvinyl chloride/carbon black microgrid films was obtained by screen printing. Compared to other recent pressure sensors, these printed pressure sensors with microstructured grids have a broad pressure range up to 666.7 kPa, an excellent sensitivity of typically 4.71 kPa −1 in the dynamic range between 0 and 15 kPa, a fast response of typically 25 ms, a high stability, a good durability in a broad pressure range for more than 5300 cycles and long effectiveness. We showed that the printed pressure sensors can be customized to fit in a smart insole. Moreover, a wrist pulse could be detected accurately by a single sensor. The proposed printed pressure sensors will have a great potential a smart devices in health monitoring, for preventive health care, and in rehabilitation care.