Graphene-Based Flexible Sensors for Respiratory and Airflow Monitoring

Yanhua Song; Long Chen; Qianqian Yang; Guang Liu; Qiwen Yu; Xiaoya Xie; Chao Chen; Jun Liu; Guanqun Chao; Xing Chen; Ming-Wei Chang

doi:10.1021/acsanm.3c01541

Graphene-Based Flexible Sensors for Respiratory and Airflow Monitoring

Yanhua Song, Long Chen, Qianqian Yang, Guang Liu, Qiwen Yu, Xiaoya Xie, Chao Chen, Jun Liu, Guanqun Chao, Xing Chen, Ming-Wei Chang

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

8 Citations (Scopus)

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Abstract

Flexible devices have been rapidly developed and applied in various applications. However, there have been few reports on printable graphene-based sensors with customized structures and properties capable of respiratory and airflow monitoring. In this study, a graphene-based flexible sensor with a conical microdot array (GSCA) made by the direct-ink writing 3D printing method for real-time personal signals and air-coupled detection is reported. GSCA 3D structures with microdot features on the sensing layer can deliver a fast response of below 60 ms and improve the sensitivity by 32.4% (26–78 kPa), 800% (78–102 kPa), and 600% (102–160 kPa) by adjusting the printing parameters. The sensor exhibits a low detection limit of 11.4 Pa and a large detection range with a linear sensitivity of 1.4–509 kPa. The spider leg-like micro-/nanofibers between two adjacent microdots contribute to electron transport and airflow sensing. The results show the feasibility of the graphene-based sensor with dots to recognize air strength and direction for respiration and airflow. Further validation of the GSCA in real-time personal monitoring demonstrates the potential for multitasking wearable sensors.

Original language	English
Pages (from-to)	8937-8944
Number of pages	8
Journal	ACS Applied Nano Materials
Volume	6
Issue number	10
Early online date	4 May 2023
DOIs	https://doi.org/10.1021/acsanm.3c01541
Publication status	Published (in print/issue) - 26 May 2023

Bibliographical note

Funding Information:
The authors sincerely acknowledge financial support from the National Natural Science Foundation of China (no. 81771960 to M.W.C.), the National Natural Science Foundation of China (no. 82172064 to X.C.), the Major Scientific Project of Zhejiang Lab (no. 2020MC0AD01 to X.C.), the National Key Research and Development Program of China (no. 2019YFC1711800 to J.L.), and the Pioneer Project of Zhejiang province (no. 2022c03188 to X.C.). Informed consent was obtained from all volunteers who participated in this study.

Publisher Copyright:
© 2023 American Chemical Society

Keywords

graphene
direct-ink writing
wearable electronic
microdot
airflow

UN SDGs

This output contributes to the following UN Sustainable Development Goals (SDGs)

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10.1021/acsanm.3c01541

Primary_manuscriptAuthor Accepted Manuscript, 3.09 MB

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abstract = "Flexible devices have been rapidly developed and applied in various applications. However, there have been few reports on printable graphene-based sensors with customized structures and properties capable of respiratory and airflow monitoring. In this study, a graphene-based flexible sensor with a conical microdot array (GSCA) made by the direct-ink writing 3D printing method for real-time personal signals and air-coupled detection is reported. GSCA 3D structures with microdot features on the sensing layer can deliver a fast response of below 60 ms and improve the sensitivity by 32.4% (26–78 kPa), 800% (78–102 kPa), and 600% (102–160 kPa) by adjusting the printing parameters. The sensor exhibits a low detection limit of 11.4 Pa and a large detection range with a linear sensitivity of 1.4–509 kPa. The spider leg-like micro-/nanofibers between two adjacent microdots contribute to electron transport and airflow sensing. The results show the feasibility of the graphene-based sensor with dots to recognize air strength and direction for respiration and airflow. Further validation of the GSCA in real-time personal monitoring demonstrates the potential for multitasking wearable sensors.",

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N2 - Flexible devices have been rapidly developed and applied in various applications. However, there have been few reports on printable graphene-based sensors with customized structures and properties capable of respiratory and airflow monitoring. In this study, a graphene-based flexible sensor with a conical microdot array (GSCA) made by the direct-ink writing 3D printing method for real-time personal signals and air-coupled detection is reported. GSCA 3D structures with microdot features on the sensing layer can deliver a fast response of below 60 ms and improve the sensitivity by 32.4% (26–78 kPa), 800% (78–102 kPa), and 600% (102–160 kPa) by adjusting the printing parameters. The sensor exhibits a low detection limit of 11.4 Pa and a large detection range with a linear sensitivity of 1.4–509 kPa. The spider leg-like micro-/nanofibers between two adjacent microdots contribute to electron transport and airflow sensing. The results show the feasibility of the graphene-based sensor with dots to recognize air strength and direction for respiration and airflow. Further validation of the GSCA in real-time personal monitoring demonstrates the potential for multitasking wearable sensors.

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Graphene-Based Flexible Sensors for Respiratory and Airflow Monitoring

Abstract

Bibliographical note

Keywords

UN SDGs

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