A strain-absorbing design for tissue–machine interfaces using a tunable adhesive gel

Sungwon Lee (), Yusuke Inoue, Dongmin Kim, Amir Reuveny, Kazunori Kuribara, Tomoyuki Yokota, Jonathan Reeder, Masaki Sekino, Tsuyoshi Sekitani (), Yusuke Abe and Takao Someya ()
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Sungwon Lee: The University of Tokyo
Yusuke Inoue: The University of Tokyo
Dongmin Kim: The University of Tokyo
Amir Reuveny: The University of Tokyo
Kazunori Kuribara: The University of Tokyo
Tomoyuki Yokota: The University of Tokyo
Jonathan Reeder: The University of Tokyo
Masaki Sekino: The University of Tokyo
Tsuyoshi Sekitani: The University of Tokyo
Yusuke Abe: Graduate School of Medicine, The University of Tokyo
Takao Someya: The University of Tokyo

Nature Communications, 2014, vol. 5, issue 1, 1-8

Abstract: Abstract To measure electrophysiological signals from the human body, it is essential to establish stable, gentle and nonallergic contacts between the targeted biological tissue and the electrical probes. However, it is difficult to form a stable interface between the two for long periods, especially when the surface of the biological tissue is wet and/or the tissue exhibits motion. Here we resolve this difficulty by designing and fabricating smart, stress-absorbing electronic devices that can adhere to wet and complex tissue surfaces and allow for reliable, long-term measurements of vital signals. We demonstrate a multielectrode array, which can be attached to the surface of a rat heart, resulting in good conformal contact for more than 3 h. Furthermore, we demonstrate arrays of highly sensitive, stretchable strain sensors using a similar design. Ultra-flexible electronics with enhanced adhesion to tissue could enable future applications in chronic in vivo monitoring of biological signals.

Date: 2014
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DOI: 10.1038/ncomms6898

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