Ultra-Wide Range Pressure Sensor Based on a Microstructured Conductive Nanocomposite for Wearable Workout Monitoring

Yongrok Jeong; Jimin Gu; Jaiyeul Byun; Junseong Ahn; Jaebum Byun; Kyuyoung Kim; Jaeho Park; Jiwoo Ko; Jun-Ho Jeong; Morteza Amjadi; Inkyu Park

doi:10.1002/adhm.202001461

Ultra-Wide Range Pressure Sensor Based on a Microstructured Conductive Nanocomposite for Wearable Workout Monitoring

Yongrok Jeong, Jimin Gu, Jaiyeul Byun, Junseong Ahn, Jaebum Byun, Kyuyoung Kim, Jaeho Park, Jiwoo Ko, Jun-Ho Jeong, Morteza Amjadi, Inkyu Park

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Abstract

Conventional flexible pressure sensors are not suitable for high-pressure applications due to their low saturation pressure. In this study, an ultra-wide range pressure sensor is designed based on the optimized microstructure of the polyimide/carbon nanotubes (PI/CNT) nanocomposite film. The sensing range of the pressure sensor is expanded by adopting polyimide (PI) with a high elastic modulus as a matrix material and its sensitivity is improved through functional sensing film with tip-flattened microdome arrays. As a result, the pressure sensor can measure a wide pressure range (≈ 0-3000 kPa) and possesses the sensitivity of ≈ 5.66 × 10-3 -0.23 × 10-3 kPa-1 with high reliability and durability up to 1000 cycles. The proposed sensor is integrated into the hand and foot pressure monitoring systems for workout monitoring. The representative values of the pressure distribution in the hands and feet during the powerlifting are acquired and analyzed through Pearson's correlation coefficient (PCC). The analyzed results suggest that the pressure sensor can provide useful real-time information for healthcare and sports performance monitoring.

Original language	English
Article number	2001461
Journal	Advanced Healthcare Materials
Volume	10
Issue number	9
Early online date	10 Mar 2021
DOIs	https://doi.org/10.1002/adhm.202001461
Publication status	Published - 5 May 2021

Keywords

contact resistance
healthcare pressure
resistive pressure sensors
wide pressure range
workout pressure

ASJC Scopus subject areas

Biomaterials
Biomedical Engineering
Pharmaceutical Science

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10.1002/adhm.202001461

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This is the peer reviewed version of the following article: Jeong, Y., Gu, J., Byun, J., Ahn, J., Byun, J., Kim, K., Park, J., Ko, J., Jeong, J., Amjadi, M., Park, I., Ultra‐Wide Range Pressure Sensor Based on a Microstructured Conductive Nanocomposite for Wearable Workout Monitoring. Adv. Healthcare Mater. 2021, 2001461, which has been published in final form at https://doi.org/10.1002/adhm.202001461 This article may be used for non-commercial purposes in accordance with Wiley Terms and Conditions for Use of Self-Archived Versions.
Accepted author manuscript, 2.04 MB

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title = "Ultra-Wide Range Pressure Sensor Based on a Microstructured Conductive Nanocomposite for Wearable Workout Monitoring",

abstract = "Conventional flexible pressure sensors are not suitable for high-pressure applications due to their low saturation pressure. In this study, an ultra-wide range pressure sensor is designed based on the optimized microstructure of the polyimide/carbon nanotubes (PI/CNT) nanocomposite film. The sensing range of the pressure sensor is expanded by adopting polyimide (PI) with a high elastic modulus as a matrix material and its sensitivity is improved through functional sensing film with tip-flattened microdome arrays. As a result, the pressure sensor can measure a wide pressure range (≈ 0-3000 kPa) and possesses the sensitivity of ≈ 5.66 × 10-3 -0.23 × 10-3 kPa-1 with high reliability and durability up to 1000 cycles. The proposed sensor is integrated into the hand and foot pressure monitoring systems for workout monitoring. The representative values of the pressure distribution in the hands and feet during the powerlifting are acquired and analyzed through Pearson's correlation coefficient (PCC). The analyzed results suggest that the pressure sensor can provide useful real-time information for healthcare and sports performance monitoring.",

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author = "Yongrok Jeong and Jimin Gu and Jaiyeul Byun and Junseong Ahn and Jaebum Byun and Kyuyoung Kim and Jaeho Park and Jiwoo Ko and Jun-Ho Jeong and Morteza Amjadi and Inkyu Park",

note = "Funding Information: Y.J. and J.G. contributed equally to this work. This work was supported by the National Research Foundation of Korea (NRF) grant funded by the Korean government, Ministry of Science and Technology Information and Communication (MSIT) (No. 2018R1A2B2004910). This work was supported by the National Research Foundation of Korea (NRF) Grant funded by the Korean Government, Ministry of Science, ICT and Future Planning (MSIP) (No. 2015R1A5A1037668). Publisher Copyright: {\textcopyright} 2021 Wiley-VCH GmbH",

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AU - Ahn, Junseong

AU - Byun, Jaebum

AU - Kim, Kyuyoung

AU - Park, Jaeho

AU - Ko, Jiwoo

AU - Jeong, Jun-Ho

AU - Amjadi, Morteza

AU - Park, Inkyu

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PY - 2021/5/5

Y1 - 2021/5/5

N2 - Conventional flexible pressure sensors are not suitable for high-pressure applications due to their low saturation pressure. In this study, an ultra-wide range pressure sensor is designed based on the optimized microstructure of the polyimide/carbon nanotubes (PI/CNT) nanocomposite film. The sensing range of the pressure sensor is expanded by adopting polyimide (PI) with a high elastic modulus as a matrix material and its sensitivity is improved through functional sensing film with tip-flattened microdome arrays. As a result, the pressure sensor can measure a wide pressure range (≈ 0-3000 kPa) and possesses the sensitivity of ≈ 5.66 × 10-3 -0.23 × 10-3 kPa-1 with high reliability and durability up to 1000 cycles. The proposed sensor is integrated into the hand and foot pressure monitoring systems for workout monitoring. The representative values of the pressure distribution in the hands and feet during the powerlifting are acquired and analyzed through Pearson's correlation coefficient (PCC). The analyzed results suggest that the pressure sensor can provide useful real-time information for healthcare and sports performance monitoring.

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Ultra-Wide Range Pressure Sensor Based on a Microstructured Conductive Nanocomposite for Wearable Workout Monitoring

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Keywords

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