A wearable mechano-acoustic sensor based on electrochemical redox reaction for continuous cardiorespiratory monitoring

Zhiguo Zhao; Xiaoce Feng; Xiaoyu Chen; Lenore L. Dai; Yong Xu

doi:10.1063/5.0029108

A wearable mechano-acoustic sensor based on electrochemical redox reaction for continuous cardiorespiratory monitoring

Zhiguo Zhao, Xiaoce Feng, Xiaoyu Chen, Lenore L. Dai, Yong Xu

Engineering, Ira A. Fulton Schools of (IAFSE)

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

10 Scopus citations

Abstract

This Letter reports a wearable mechano-acoustic sensor for continuous cardiorespiratory monitoring. The sensing mechanism is based on reversible iodide/triiodide (I - / I 3 -) electrochemical redox reaction on microfabricated platinum electrodes, enabling an ultra-high sensitivity on the detection of mechano-acoustic signals of the cardiorespiratory system. Ecoflex, a flexible silicone rubber, is adopted as the material of the sensor body due to its excellent stretchability, robustness, and skin-compatibility. The developed sensor exhibited a noise floor of 4.5 μg/ Hz at 10 Hz. Detection of heart sounds, lung sounds, and respiration rates was demonstrated.

Original language	English (US)
Article number	023703
Journal	Applied Physics Letters
Volume	118
Issue number	2
DOIs	https://doi.org/10.1063/5.0029108
State	Published - Jan 11 2021

ASJC Scopus subject areas

Physics and Astronomy (miscellaneous)

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10.1063/5.0029108

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title = "A wearable mechano-acoustic sensor based on electrochemical redox reaction for continuous cardiorespiratory monitoring",

abstract = "This Letter reports a wearable mechano-acoustic sensor for continuous cardiorespiratory monitoring. The sensing mechanism is based on reversible iodide/triiodide (I - / I 3 -) electrochemical redox reaction on microfabricated platinum electrodes, enabling an ultra-high sensitivity on the detection of mechano-acoustic signals of the cardiorespiratory system. Ecoflex, a flexible silicone rubber, is adopted as the material of the sensor body due to its excellent stretchability, robustness, and skin-compatibility. The developed sensor exhibited a noise floor of 4.5 μg/ Hz at 10 Hz. Detection of heart sounds, lung sounds, and respiration rates was demonstrated. ",

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AU - Xu, Yong

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AB - This Letter reports a wearable mechano-acoustic sensor for continuous cardiorespiratory monitoring. The sensing mechanism is based on reversible iodide/triiodide (I - / I 3 -) electrochemical redox reaction on microfabricated platinum electrodes, enabling an ultra-high sensitivity on the detection of mechano-acoustic signals of the cardiorespiratory system. Ecoflex, a flexible silicone rubber, is adopted as the material of the sensor body due to its excellent stretchability, robustness, and skin-compatibility. The developed sensor exhibited a noise floor of 4.5 μg/ Hz at 10 Hz. Detection of heart sounds, lung sounds, and respiration rates was demonstrated.

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A wearable mechano-acoustic sensor based on electrochemical redox reaction for continuous cardiorespiratory monitoring

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