Flexible contact and non-contact dual-mode capacitive sensor for sensing and assembling flexible, intelligent medical monitoring systems for wireless transmission of medical data

Lixia Tan; Bingxiang Li; Qingjia Jia; Zhuonan Xiao; Chenhao Cong; Xinlin Li

doi:10.1117/12.3029386

6 May 2024 Flexible contact and non-contact dual-mode capacitive sensor for sensing and assembling flexible, intelligent medical monitoring systems for wireless transmission of medical data

Lixia Tan, Bingxiang Li, Qingjia Jia, Zhuonan Xiao, Chenhao Cong, Xinlin Li

Author Affiliations +

Proceedings Volume 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024); 1310712 (2024) https://doi.org/10.1117/12.3029386
Event: Fourth International Conference on Sensors and Information Technology (ICSI 2024), 2024, Xiamen, China

Abstract

In recent years, the innovation of wearable medical devices and flexible smart healthcare systems has benefited from the rapid development of flexible electronics, Internet of Things, and Internet health. In this work, a flexible capacitive proximity and pressure dual-mode sensor, which can be used for health detection, is proposed to be fabricated by dispensing printing combined with transfer printing. Sensor performance is strongly influenced by the material of its dielectric layer. A low concentration of graphitic carbon nitride (GCN) doping into polyvinylidene difluoride (PVDF) yields a composite material with a low dielectric constant, and the ideal doping ratio is found. The sensor's fork finger electrodes were prepared using dispense printing technology, and the GCN/PVDF dielectric layer was printed on them. The electrodes on the substrate were transferred to the dielectric layer using the composite material's characteristics. While ensuring the transfer printing effect, the sensor is guaranteed to have high sensitivity, fast response and large detection range, and has good performance in both contact and non-contact systems, and wireless data transmission is realized, indicating its great potential for application in medical monitoring.

(2024) Published by SPIE. Downloading of the abstract is permitted for personal use only.

Citation Download Citation

Lixia Tan, Bingxiang Li, Qingjia Jia, Zhuonan Xiao, Chenhao Cong, and Xinlin Li "Flexible contact and non-contact dual-mode capacitive sensor for sensing and assembling flexible, intelligent medical monitoring systems for wireless transmission of medical data", Proc. SPIE 13107, Fourth International Conference on Sensors and Information Technology (ICSI 2024), 1310712 (6 May 2024); https://doi.org/10.1117/12.3029386

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KEYWORDS

Sensors

Electrodes

Printing

Dielectrics

Ferroelectric polymers

Composites

Capacitance

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