Flexible Copper Nanowire Electronics for Wireless Dynamic Pressure Sensing
Saurabh Khuje, Aaron Sheng, Jian Yu, Shenqiang Ren
Abstract
Recent advances in the field of flexible electronics have garnered immense attention. Flexible pressure sensors with high sensitivity and the capability of being additively manufactured are becoming crucial for monitoring signals pertaining to various stimuli. Herein, we describe a conformal resistive pressure sensor by direct writing of metal nanowires onto flexible ceramics for impact sensing and pressure monitoring under extreme environments. The conformal pressure sensor shows a sensitivity of 1.45 kPa–1 for static pressures as low as 49 Pa to 4905 Pa, a fast response time of 70 ms, and high cyclic stability and reliability (>1000 cycles). It can also be utilized for wireless detection of impacts and pressure impacts as a consequence of laser shockwaves with resulting dynamic pressures ranging from 0.17–0.29 MPa. The printed pressure sensor also displays the capability of detecting the pulse and providing vital information regarding the arterial physical situation in a noninvasive way. The findings shown here detail the capability of sensor electronics with the capability of additive manufacturing for next-generation flexible hybrid electronics.