MWCNT-coated cotton yarn array for piezoresistive force and bending sensor applications in Internet of Things systems

Dae-Young Jeon,So Jeong Park,Tae Yoon Lee,Gyu-Tae Kim

doi:10.1016/j.sna.2021.113209

Abstract

Advanced sensors based on the Internet of Things (IoT) are bringing new technology and productivity paradigms to the era of the fourth industrial revolution. Here, piezoresistive force and bending sensors with good performance (sensitivity ≈ 0.3 kPa−1 and ∆normalized resistance/∆curvature ≈1.5 cm) were fabricated by using perpendicularly aligned multi-walled (MW) carbon nanotube-coated yarn (CNT-CY) arrays, which were obtained from a simple dipping-and-drying method. Verification was performed using a proof-of-concept force sensor matrix with an Arduino open-source microcontroller. In addition, a force sensor combined with real-time data storage in Google Cloud was successfully demonstrated. This work provides important information for the development of a robust, low-cost, and easy-to-manufacture IoT platform with MWCNT-based composites as an active sensing material.

Highlights

Advanced sensing platforms, which can detect, monitor, and predict external environments in real time, have recently attracted considerable attention in the era of the fourth industrial revolution, comprising the Internet of Things (IoT), big data, cloud computing, robotics, and artificial intelligence.[1-5]
These results indicate that horizontally aligned Multi-walled carbon nanotube (MWCNT)-coated yarn (CY) arrays provide electrical resistance with negligible capacitance
MWCNT-CY arrays were achieved by using a simple dipping-and-drying method without a microfabrication process or extensive chemical treatments

Summary

Introduction

Advanced sensing platforms, which can detect, monitor, and predict external environments in real time, have recently attracted considerable attention in the era of the fourth industrial revolution, comprising the Internet of Things (IoT), big data, cloud computing, robotics, and artificial intelligence.[1-5]. MWCNT-coated cotton yarn array for piezoresistive force and bending sensor applications in Internet of Things systems

Results

Conclusion