Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Ju Hyun Oh; Soo Yeong Hong; Heun Park; Sang Woo Jin; Yu Ra Jeong; Seung Yun Oh; Junyeong Yun; Hanchan Lee; Jung Wook Kim; Jeong Sook Ha

doi:10.1021/acsami.7b17727

Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

Ju Hyun Oh, Soo Yeong Hong, Heun Park, Sang Woo Jin, Yu Ra Jeong, Seung Yun Oh, Junyeong Yun, Hanchan Lee, Jung Wook Kim, Jeong Sook Ha

Department of Chemical and Biological Engineering

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

130 Citations (Scopus)

Abstract

In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNIPAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%·°C^-1 between 25 and 40 °C so that the change in skin temperature of 0.5 °C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.

Original language	English
Pages (from-to)	7263-7270
Number of pages	8
Journal	ACS Applied Materials and Interfaces
Volume	10
Issue number	8
DOIs	https://doi.org/10.1021/acsami.7b17727
Publication status	Published - 2018 Feb 28

Keywords

bioinspired adhesive
poly(3,4-ethylenedioxythiophene) polystyrene sulfonate-carbon nanotube composite
poly(N-isopropylacrylamide)
skin-attachable sensors
temperature sensor

ASJC Scopus subject areas

Materials Science(all)

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10.1021/acsami.7b17727

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title = "Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive",

abstract = "In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNIPAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%·°C-1 between 25 and 40 °C so that the change in skin temperature of 0.5 °C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.",

keywords = "bioinspired adhesive, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate-carbon nanotube composite, poly(N-isopropylacrylamide), skin-attachable sensors, temperature sensor",

author = "Oh, {Ju Hyun} and Hong, {Soo Yeong} and Heun Park and Jin, {Sang Woo} and Jeong, {Yu Ra} and Oh, {Seung Yun} and Junyeong Yun and Hanchan Lee and Kim, {Jung Wook} and Ha, {Jeong Sook}",

note = "Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (grant no. NRF-2016R1A2A1A05004935). We also thank the KU-KIST graduate school program of the Korea University. Publisher Copyright: {\textcopyright} 2018 American Chemical Society.",

year = "2018",

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doi = "10.1021/acsami.7b17727",

language = "English",

volume = "10",

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journal = "ACS applied materials & interfaces",

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AU - Oh, Ju Hyun

AU - Hong, Soo Yeong

AU - Park, Heun

AU - Jin, Sang Woo

AU - Jeong, Yu Ra

AU - Oh, Seung Yun

AU - Yun, Junyeong

AU - Lee, Hanchan

AU - Kim, Jung Wook

AU - Ha, Jeong Sook

N1 - Funding Information: This work was supported by a National Research Foundation of Korea (NRF) grant funded by the Korean government (MEST) (grant no. NRF-2016R1A2A1A05004935). We also thank the KU-KIST graduate school program of the Korea University. Publisher Copyright: © 2018 American Chemical Society.

PY - 2018/2/28

Y1 - 2018/2/28

N2 - In this study, we demonstrate the fabrication of a highly sensitive flexible temperature sensor with a bioinspired octopus-mimicking adhesive. A resistor-type temperature sensor consisting of a composite of poly(N-isopropylacrylamide) (pNIPAM)-temperature sensitive hydrogel, poly(3,4-ethylenedioxythiophene) polystyrene sulfonate, and carbon nanotubes exhibits a very high thermal sensitivity of 2.6%·°C-1 between 25 and 40 °C so that the change in skin temperature of 0.5 °C can be accurately detected. At the same time, the polydimethylsiloxane adhesive layer of octopus-mimicking rim structure coated with pNIPAM is fabricated through the formation of a single mold by utilizing undercut phenomenon in photolithography. The fabricated sensor shows stable and reproducible detection of skin temperature under repeated attachment/detachment cycles onto skin without any skin irritation for a long time. This work suggests a high potential application of our skin-attachable temperature sensor to wearable devices for medical and health-care monitoring.

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Fabrication of High-Sensitivity Skin-Attachable Temperature Sensors with Bioinspired Microstructured Adhesive

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