JZUS - Journal of Zhejiang University SCIENCE

Journal of Zhejiang University SCIENCE A

Accepted manuscript available online (unedited version)

High-sensitivity flexible iontronic pressure sensor for pulse signal detection and underwater intelligent communication

Author(s): Menghui XIANG^1, ^2, Cong ZHAI^2, Congcong HAO^3*, Guirong WU¹, Jin CHAI^2, ⁴, Yunlong ZHAO¹, Zekai HUANG¹, Bin YAO^1, ², Heying ZHANG³, Mengran LIU⁵, Lei NIE⁵, Xiewen WEN⁶, Chenyang XUE^1, ², Libo GAO¹
Affiliation(s): ¹Pen-Tung Sah Institute of Micro-Nano Science and Technology, and Discipline of Intelligent Instrument and Equipment, Xiamen University, Xiamen 361102, China ²Laoshan Laboratory, Qingdao 266237, China ³Key Laboratory of Instrumentation Science & Dynamic Measurement Ministry of Education, North University of China, Taiyuan 030051, China ⁴College of Chemistry and Chemical Engineering, Xiamen University, Xiamen 361102, China ⁵Hubei Key Laboratory of Modern Manufacturing Quantity Engineering, School of Mechanical Engineering, Hubei University of Technology, Wuhan 430068, China ⁶Department of ISE, University Research Facility in 3D Printing, and State Key Laboratory of Ultra-precision Machining Technology, The Hong Kong Polytechnic University, Hong Kong, China
Corresponding email(s): Cong ZHAI, OliverChild@hotmail.com Congcong HAO, 20210093@nuc.edu.cn Libo GAO, lbgao@xmu.edu.cn
Key Words: Flexible pressure sensor; Underwater sensing; Iontronic sensor; Machine learning

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Menghui XIANG^1,^2*, Cong ZHAI^2*, Congcong HAO^3*, Guirong WU¹, Jin CHAI^2,⁴, Yunlong ZHAO¹, Zekai HUANG¹, Bin YAO^1,², Heying ZHANG³, Mengran LIU⁵, Lei NIE⁵, Xiewen WEN⁶, Chenyang XUE^1,², Libo GAO¹. High-sensitivity flexible iontronic pressure sensor for pulse signal detection and underwater intelligent communication[J]. Journal of Zhejiang University Science A,in press.Frontiers of Information Technology & Electronic Engineering,in press.https://doi.org/10.1631/jzus.A2500648

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author="Menghui XIANG^1,^2*, Cong ZHAI^2*, Congcong HAO^3*, Guirong WU¹, Jin CHAI^2,⁴, Yunlong ZHAO¹, Zekai HUANG¹, Bin YAO^1,², Heying ZHANG³, Mengran LIU⁵, Lei NIE⁵, Xiewen WEN⁶, Chenyang XUE^1,², Libo GAO¹",
journal="Journal of Zhejiang University Science A",
year="in press",
publisher="Zhejiang University Press & Springer",
doi="https://doi.org/10.1631/jzus.A2500648"
}

%0 Journal Article
%T High-sensitivity flexible iontronic pressure sensor for pulse signal detection and underwater intelligent communication
%A Menghui XIANG^1
%A^2*
%A Cong ZHAI^2*
%A Congcong HAO^3*
%A Guirong WU¹
%A Jin CHAI^2
%A⁴
%A Yunlong ZHAO¹
%A Zekai HUANG¹
%A Bin YAO^1
%A²
%A Heying ZHANG³
%A Mengran LIU⁵
%A Lei NIE⁵
%A Xiewen WEN⁶
%A Chenyang XUE^1
%A²
%A Libo GAO¹
%J Journal of Zhejiang University SCIENCE A
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%@ 1673-565X
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doi="https://doi.org/10.1631/jzus.A2500648"

TY - JOUR
T1 - High-sensitivity flexible iontronic pressure sensor for pulse signal detection and underwater intelligent communication
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A1 - Congcong HAO^3*
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doi="https://doi.org/10.1631/jzus.A2500648"

Abstract
Chinese Summary
Academic Network
Reviewer Comment

Abstract: Flexible pressure sensors have become pivotal in the advancement of wearable electronics, underwater monitoring, and human-machine interfaces (HMI), particularly when augmented by artificial intelligence. Nevertheless, the development of a unified sensing platform capable of seamless operation in both terrestrial health monitoring and aquatic communication environments remains a significant challenge. To address this issue, a highly sensitive, flexible ionic pressure sensor featuring a micro-pyramidal architecture was developed. The device is fabricated using molding involving a bespoke ionic ink composite comprising carbon nanotubes (CNTs) and ionic liquids as the sensing layer. This layer is then sandwiched between screen-printed silver electrodes. The sensor demonstrates exceptional performance metrics, including high sensitivity (370 kPa-1), rapid response/recovery times (20 ms), and outstanding reliability (about 20000 cycles). In the domain of wearable health monitoring, the sensor demonstrated its capacity to discern faint human pulse signals. The integration of established principles from traditional Chinese pulse-taking methodologies was successful in identifying optimal pressure points, thereby facilitating the acquisition of high-fidelity pulse waveforms. Concurrently, within the domain of underwater intelligent communication, the sensor was used to sense Morse code signals, which were then accurately classified through a deep learning algorithm. This research has established a reliable method for covert messaging and has significantly augmented the potential for biological monitoring in aquatic environments. This work not only validates the sensor's high performance but also demonstrates its dual-functionality, seamlessly connecting human healthcare with intelligent underwater interaction and significantly broadening the scope of application of flexible sensing technology.

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