A reconfigurable and conformal liquid sensor for ambulatory cardiac monitoring

Xun Zhao, Yihao Zhou, William Kwak, Aaron Li, Shaolei Wang, Marklin Dallenger, Songyue Chen, Yuqi Zhang, Allison Lium and Jun Chen ()
Additional contact information
Xun Zhao: Los Angeles
Yihao Zhou: Los Angeles
William Kwak: Los Angeles
Aaron Li: Los Angeles
Shaolei Wang: Los Angeles
Marklin Dallenger: Los Angeles
Songyue Chen: Los Angeles
Yuqi Zhang: Los Angeles
Allison Lium: Los Angeles
Jun Chen: Los Angeles

Nature Communications, 2024, vol. 15, issue 1, 1-9

Abstract: Abstract The severe mismatch between solid bioelectronics and dynamic biological tissues has posed enduring challenges in the biomonitoring community. Here, we developed a reconfigurable liquid cardiac sensor capable of adapting to dynamic biological tissues, facilitating ambulatory cardiac monitoring unhindered by motion artifacts or interference from other biological activities. We employed an ultrahigh-resolution 3D scanning technique to capture tomographic images of the skin on the wrist. Then, we established a theoretical model to gain a deep understanding of the intricate interaction between our reconfigurable sensor and dynamic biological tissues. To properly elucidate the advantages of this sensor, we conducted cardiac monitoring alongside benchmarks such as the electrocardiogram. The liquid cardiac sensor was demonstrated to produce stable signals of high quality (23.1 dB) in ambulatory settings.

Date: 2024
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DOI: 10.1038/s41467-024-52462-8

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