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Polymers 2017, 9(9), 457; https://doi.org/10.3390/polym9090457

A Wearable and Wireless Gas-Sensing System Using Flexible Polymer/Multi-Walled Carbon Nanotube Composite Films

1
Department of Electrical Engineering, National Chiao Tung University, 1001 University Road, Hsinchu City 30010, Taiwan
2
Institute of Electrical and Control Engineering, National Chiao Tung University, 1001 University Road, Hsinchu City 30010, Taiwan
*
Author to whom correspondence should be addressed.
Received: 30 July 2017 / Revised: 11 September 2017 / Accepted: 14 September 2017 / Published: 18 September 2017
(This article belongs to the Special Issue Wearable Sensor)
View Full-Text   |   Download PDF [13995 KB, uploaded 18 September 2017]   |  

Abstract

In this study, an integrated flexible gas sensor was developed based on a polymer/multi-walled carbon nanotube composite film by using Bluetooth wireless communication/interface technology. Polymer/multi-walled carbon nanotube composite films were deposited over a polyimide flexible substrate for building a gas sensor array by using a drop-casting method. Sensor response was acquired through interdigitated electrodes and multi-channel sensor boards, which were linked to a Bluetooth wireless transceiver. Additionally, a double-spiral-shaped heater was built into the backside of the gas sensor array as a thermostat to protect it from the influence of ambient temperature. Multi-channel sensing responses were read on a display screen via a smartphone application (app). The advantages of this system include light weight, low cost, highly integrated sensors, wireless telecommunication, and real-time functioning. Thus, it is a promising candidate for deployment in a wearable gas-sensing system used to study air pollution. View Full-Text
Keywords: polymer/multi-walled carbon nanotube composites; wearable device; wireless device; air pollution polymer/multi-walled carbon nanotube composites; wearable device; wireless device; air pollution
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Chiou, J.-C.; Wu, C.-C. A Wearable and Wireless Gas-Sensing System Using Flexible Polymer/Multi-Walled Carbon Nanotube Composite Films. Polymers 2017, 9, 457.

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