Issue 46, 2023

Printing conformal and flexible copper networks for multimodal pressure and flow sensing

Abstract

Flexible multimodal sensors with ultrasensitive detection capabilities are an indispensable component of wearable electronics and are highly sought-after involving a wide range of signal monitoring such as artificial skin and soft robotics. Here we report a flexible and wireless multimodal sensor using low-temperature additive manufacturing of copper nanoplates on elastic polyurethane substrates for temperature, pressure, and flow monitoring. The positive temperature coefficient and piezoresistive performance of the copper nanoplate network translates to a reliable temperature, steady-state and dynamic pressure/flow sensing for detecting pressures as small as 0.64 Pa with a response time of 130 ms, as well as velocity detection ranging from 2.5ā€“6.8 m sāˆ’1. Additionally, by incorporating a printed antenna, it enables a self-powered, battery-free system, offering a wireless readout of printed multimodal sensors with superior real-time sensing performance in conjunction with wearable flexibility.

Graphical abstract: Printing conformal and flexible copper networks for multimodal pressure and flow sensing

Supplementary files

Article information

Article type
Paper
Submitted
17 Jul 2023
Accepted
30 Oct 2023
First published
31 Oct 2023

Nanoscale, 2023,15, 18660-18666

Printing conformal and flexible copper networks for multimodal pressure and flow sensing

S. Khuje, A. Islam, J. Yu and S. Ren, Nanoscale, 2023, 15, 18660 DOI: 10.1039/D3NR03481J

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