Design of stretchable and self-powered sensing device for portable and remote trace biomarkers detection

Wenxi Huang, Qiongling Ding, Hao Wang, Zixuan Wu, Yibing Luo, Wenxiong Shi, Le Yang, Yujie Liang, Chuan Liu and Jin Wu ()
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Wenxi Huang: Sun Yat-sen University
Qiongling Ding: Sun Yat-sen University
Hao Wang: Sun Yat-sen University
Zixuan Wu: Sun Yat-sen University
Yibing Luo: Sun Yat-sen University
Wenxiong Shi: Tianjin University of Technology
Le Yang: Sun Yat-sen University
Yujie Liang: Sun Yat-sen University
Chuan Liu: Sun Yat-sen University
Jin Wu: Sun Yat-sen University

Nature Communications, 2023, vol. 14, issue 1, 1-13

Abstract: Abstract Timely and remote biomarker detection is highly desired in personalized medicine and health protection but presents great challenges in the devices reported so far. Here, we present a cost-effective, flexible and self-powered sensing device for H2S biomarker analysis in various application scenarios based on the structure of galvanic cells. The sensing mechanism is attributed to the change in electrode potential resulting from the chemical adsorption of gas molecules on the electrode surfaces. Intrinsically stretchable organohydrogels are used as solid-state electrolytes to enable stable and long-term operation of devices under stretching deformation or in various environments. The resulting open-circuit sensing device exhibits high sensitivity, low detection limit, and excellent selectivity for H2S. Its application in the non-invasive halitosis diagnosis and identification of meat spoilage is demonstrated, emerging great commercial value in portable medical electronics and food security. A wireless sensory system has also been developed for remote H2S monitoring with the participation of Bluetooth and cloud technologies. This work breaks through the shortcomings in the traditional chemiresistive sensors, offering a direction and theoretical foundation for designing wearable sensors catering to other stimulus detection requirements.

Date: 2023
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DOI: 10.1038/s41467-023-40953-z

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