Inkjet-Printed CNT/PEDOT:PSS Temperature Sensor on a Textile Substrate for Wearable Intelligent Systems

Burcu Arman Kuzubasoglu; Ersin Sayar; Senem Kursun Bahadir

doi:10.1109/JSEN.2021.3070073

Inkjet-Printed CNT/PEDOT:PSS Temperature Sensor on a Textile Substrate for Wearable Intelligent Systems

Burcu Arman Kuzubasoglu^*, Ersin Sayar, Senem Kursun Bahadir^*

^*Corresponding author for this work

Department of Mechanical Engineering

Istanbul Technical University

Research output: Contribution to journal › Article › peer-review

65 Citations (Scopus)

Abstract

The presented work focused on the development of temperature sensors based on specially formulated carbon nanotube (CNT) and poly(3,4-ethylene dioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) based inks which are deposited directly onto the adhesive polyamide-based taffeta fabric with low-cost office-type inkjet printer. Stable and uniform dispersions of CNT and PEDOT:PSS with Triton X-100 were formulated to be used as temperature sensitive inkjet inks. Three kinds of temperature sensors were fabricated using sensitive materials including CNT ink, PEDOT:PSS ink, and CNT/PEDOT:PSS composite ink. Developed sensors are connected to the measuring devices via silver yarns and silver adhesive paste. Sensors are covered with translucent polyurethane welding tape for packaging and protection. All the sensors exhibit negative temperature coefficient (NTC) behavior and sensitivity of 0.15 %°C for CNT, 0.41 %°C for PEDOT:PSS, and 0.31 %°C for CNT/PEDOT:PSS for temperatures varying from room temperature to 50 °C. CNT/PEDOT:PSS composite ink printed sensor achieved better sensing repeatability and demonstrated higher bending stability with a resistance change of 0.3 % up to 1000 cycles than CNT printed and PEDOT:PSS printed sensors. The softness, lightness, and capability to work on flexible or curved surfaces make the developed CNT/PEDOT:PSS composite ink printed sensor a robust candidate for wearable temperature sensor applications, especially in situations requiring continuous body temperature monitoring while satisfying comfort of the user.

Original language	English
Article number	9391707
Pages (from-to)	13090-13097
Number of pages	8
Journal	IEEE Sensors Journal
Volume	21
Issue number	12
DOIs	https://doi.org/10.1109/JSEN.2021.3070073
Publication status	Published - 15 Jun 2021

Bibliographical note

Publisher Copyright:
© 2001-2012 IEEE.

Funding

Manuscript received March 4, 2021; accepted March 24, 2021. Date of publication March 31, 2021; date of current version June 14, 2021. This work was supported by the Scientific And Technological Research Council of Turkey (TUBITAK) under Project 218M746. The associate editor coordinating the review of this article and approving it for publication was Dr. Cheng-Sheng Huang. (Corresponding authors: Burcu Arman Kuzubasoglu; Senem Kursun Bahadir.) Burcu Arman Kuzubasoglu is with the Department of Textile Engineering, Istanbul Technical University, 34437 Istanbul, Turkey (e-mail: [email protected]).

Funders	Funder number
TUBITAK	218M746
Türkiye Bilimsel ve Teknolojik Araştirma Kurumu

Keywords

Carbon nanotube
PEDOT:PSS
inkjet printing
temperature sensor
thermistor
wearable technology

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10.1109/JSEN.2021.3070073

Cite this

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title = "Inkjet-Printed CNT/PEDOT:PSS Temperature Sensor on a Textile Substrate for Wearable Intelligent Systems",

abstract = "The presented work focused on the development of temperature sensors based on specially formulated carbon nanotube (CNT) and poly(3,4-ethylene dioxythiophene): poly(styrenesulfonate) (PEDOT:PSS) based inks which are deposited directly onto the adhesive polyamide-based taffeta fabric with low-cost office-type inkjet printer. Stable and uniform dispersions of CNT and PEDOT:PSS with Triton X-100 were formulated to be used as temperature sensitive inkjet inks. Three kinds of temperature sensors were fabricated using sensitive materials including CNT ink, PEDOT:PSS ink, and CNT/PEDOT:PSS composite ink. Developed sensors are connected to the measuring devices via silver yarns and silver adhesive paste. Sensors are covered with translucent polyurethane welding tape for packaging and protection. All the sensors exhibit negative temperature coefficient (NTC) behavior and sensitivity of 0.15 %°C for CNT, 0.41 %°C for PEDOT:PSS, and 0.31 %°C for CNT/PEDOT:PSS for temperatures varying from room temperature to 50 °C. CNT/PEDOT:PSS composite ink printed sensor achieved better sensing repeatability and demonstrated higher bending stability with a resistance change of 0.3 % up to 1000 cycles than CNT printed and PEDOT:PSS printed sensors. The softness, lightness, and capability to work on flexible or curved surfaces make the developed CNT/PEDOT:PSS composite ink printed sensor a robust candidate for wearable temperature sensor applications, especially in situations requiring continuous body temperature monitoring while satisfying comfort of the user.",

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author = "Kuzubasoglu, {Burcu Arman} and Ersin Sayar and Bahadir, {Senem Kursun}",

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Inkjet-Printed CNT/PEDOT:PSS Temperature Sensor on a Textile Substrate for Wearable Intelligent Systems

Abstract

Bibliographical note

Funding

Keywords

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