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

Research output: Contribution to journalArticlepeer-review

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.

Original languageEnglish
Article number113209
JournalSensors and Actuators, A: Physical
Volume332
DOIs
Publication statusPublished - 2021 Dec 1

Keywords

  • Bending sensor
  • Force sensor
  • Internet of Things (IoT)
  • MWCNT-coated cotton yarn
  • Multi-walled carbon nanotube (MWCNT)
  • Open-source microcontroller
  • Real-time data storage in cloud system
  • Sensor matrix

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Instrumentation
  • Condensed Matter Physics
  • Surfaces, Coatings and Films
  • Metals and Alloys
  • Electrical and Electronic Engineering

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