Journal
IEEE SENSORS JOURNAL
Volume 21, Issue 6, Pages 7308-7315Publisher
IEEE-INST ELECTRICAL ELECTRONICS ENGINEERS INC
DOI: 10.1109/JSEN.2020.3048236
Keywords
Sensors; Temperature sensors; Monitoring; Mechanical sensors; Immune system; Carbon nanotubes; Bending; Airflow sensor; carbon nanotube; respiration monitoring; wearable and flexible electronics
Funding
- Queensland node of the Australian National Fabrication Facility
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The article introduces a flexible and highly sensitive respiration sensor for early disease detection and wearable health monitoring. It consists of highly oriented carbon nanotube films embedded in electro-spun polyacrylonitrile layers, with high sensitivity towards airflow and insensitivity to mechanical bending. This sensor demonstrates potential for ubiquitous personal health care applications.
Recently, wearable electronics for health monitoring have been demonstrated with considerable benefits for early-stage disease detection. This article reports a flexible, bending-insensitive, bio-compatible and lightweight respiration sensor. The sensor consists of highly oriented carbon nanotube (HO-CNT) films embedded between electro-spun polyacrylonitrile (PAN) layers. By aligning carbon nanotubes between the PAN layers, the sensor exhibits a high sensitivity towards airflow (340 mV/(m/s)) and excellent flexibility and robustness. In addition, the HO-CNT sensor is insensitive to mechanical bending, making it suitable for wearable applications. We successfully demonstrated the attachment of the sensor to the human philtrum for real-time monitoring of the respiration quality. These results indicate the potential of HO-CNT flow sensor for ubiquitous personal health care applications.
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