Refereed journal article or data article (A1)

Stretchable Composite Acoustic Transducer for Wearable Monitoring of Vital Signs




List of Authors: Cotur Y, Kasimatis M, Kaisti M, Olenik S, Georgiou C, Güder F

Publisher: WILEY-V C H VERLAG GMBH

Publication year: 2020

Journal: Advanced Functional Materials

Journal name in source: ADVANCED FUNCTIONAL MATERIALS

Journal acronym: ADV FUNCT MATER

Volume number: 30

Issue number: 16

Number of pages: 7

ISSN: 1616-301X

eISSN: 1616-3028

DOI: http://dx.doi.org/10.1002/adfm.201910288

Self-archived copy’s web address: https://research.utu.fi/converis/portal/Publication/50436476


Abstract
A highly flexible, stretchable, and mechanically robust low-cost soft composite consisting of silicone polymers and water (or hydrogels) is reported. When combined with conventional acoustic transducers, the materials reported enable high performance real-time monitoring of heart and respiratory patterns over layers of clothing (or furry skin of animals) without the need for direct contact with the skin. The approach enables an entirely new method of fabrication that involves encapsulation of water and hydrogels with silicones and exploits the ability of sound waves to travel through the body. The system proposed outperforms commercial, metal-based stethoscopes for the auscultation of the heart when worn over clothing and is less susceptible to motion artefacts. The system both with human and furry animal subjects (i.e., dogs), primarily focusing on monitoring the heart, is tested; however, initial results on monitoring breathing are also presented. This work is especially important because it is the first demonstration of a stretchable sensor that is suitable for use with furry animals and does not require shaving of the animal for data acquisition.

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Last updated on 2021-24-06 at 09:06