Stretchable and Directly Patternable Double-Layer Structure Electrodes with Complete Coverage

Junsung Bang, Junhyuk Ahn, Jinyuan Zhang, Tae Hee Ko, Byeonghak Park, Yong Min Lee, Byung Ku Jung, Sang Yeop Lee, Jehyung Ok, Bong Hoon Kim, Tae Il Kim, Jong Il Choi, Chi Hwan Lee, Soong Ju Oh

Research output: Contribution to journalArticlepeer-review

12 Citations (Scopus)

Abstract

Stretchable electrodes are widely used in next-generation wearable electronics. Recent studies incorporated designs that help rigid electrodes attain stretchability. However, these structures exhibited unsatisfactory charge/signal extraction efficiency because of their low areal fill factor. Additionally, they cannot be photolithographically patterned on polymer substrates because of their low adhesion, requiring additional complicated fabrication steps. We developed photolithographically patternable stretchable electrodes with complete coverage and enhanced charge-extraction efficiency. The electrodes, comprising double layers, included a chemically treated Ag nanowire mesh and Au thin film. The interfacial linker role of polyvinylpyrrolidone chemically strengthened the interfacial bonds, and the reinforced concrete structure of nanowire-embedded metal thin films enhanced the mechanical properties. Therefore, the electrodes provided superior efficiency and stability in capturing physical, electromagnetic, and electrophysiological signals while exceeding the existing stretchable electrode limits. A broad range of applications are foreseen, such as electrocardiogram sensing electrodes, strain sensors, temperature sensors, and antennas.

Original languageEnglish
Pages (from-to)12134-12144
Number of pages11
JournalACS nano
Volume16
Issue number8
DOIs
Publication statusPublished - 2022 Aug 23

Bibliographical note

Publisher Copyright:
© 2022 American Chemical Society. All rights reserved.

Keywords

  • adhesion
  • complete coverage
  • direct patternable
  • double-layer structure
  • stretchable electrode

ASJC Scopus subject areas

  • General Materials Science
  • General Engineering
  • General Physics and Astronomy

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