A Fully Self-Healing Patch of Integrated Bio-Signal Monitoring Sensors with Self-Healing Microporous Foam and Au Nanosheet Electrodes

Mihyeon Park, Wonseok Yang, Jung Wook Kim, Yeonji Choi, Somin Kim, Yonghui Lee, Dong Sik Kim, Jiyoon Kim, Dong Kwon Lim, Jeong Sook Ha

Research output: Contribution to journalArticlepeer-review

Abstract

A fully self-healing sensor patch consisting of an in-plane integrated dual-mode sensor and a pressure sensor with a vertically integrated electrocardiogram (ECG) electrode is reported. For a full-device self-healing, interlayer self-bonding by using self-healing oxime-carbamate bond-based polyurethane and room temperature self-healing TUEG3 capped Au nanosheet (T-Au NS) electrodes are devised. Via the use of a self-healing sensor foam prepared by a coating of a self-healing composite of polyurethane and polyaniline onto a microporous graphene foam, a self-healing dual-mode sensor is fabricated to detect the pressure and temperature simultaneously without interference. Furthermore, the interdigitated self-healing electrode of T-Au NS is applied to the pressure sensor to enhance the sensitivity up to 208.62 kPa−1 (<1 kPa), enabling the detection of small pulse signals even after multiple self-healing events. By using the common self-healing T-Au NS electrode vertically integrated onto the sensor patch, ECG signals are also detected. With this sensor patch, skin temperature, wrist pulse, and ECG signals are successfully detected after a simultaneous full-device self-healing from complete bisection. This study demonstrates the facile fabrication of a high-performance, fully self-healing patch of multi-sensors via the deliberate selection of sensor design and the associated functional materials, confirming its high potential applicability to highly durable health monitoring systems.

Original languageEnglish
Article number2402508
JournalAdvanced Functional Materials
Volume34
Issue number38
DOIs
Publication statusPublished - 2024 Sept 18

Bibliographical note

Publisher Copyright:
© 2024 The Author(s). Advanced Functional Materials published by Wiley-VCH GmbH.

Keywords

  • Bio-signal monitoring
  • Self-healing Au nanosheet electrode
  • Self-healing microporous foam sensor
  • Self-healing sensor patch

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • General Chemistry
  • Biomaterials
  • General Materials Science
  • Condensed Matter Physics
  • Electrochemistry

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