Transparent and Skin-Attachable Silver Nanowire Electrodes Embedded on Dissolvable Polyurethane for Highly Conformable Wearable Electronics

Seung Rok Kim, Jiwan Jeon, Yu Chan Kim, Jin Woo Park

Research output: Contribution to journalArticlepeer-review

2 Citations (Scopus)

Abstract

Conformal contact with skin is a critical requirement for wearable electronics in medical healthcare, artificial electronics, and human–computer interfaces. Tattoo-like electronics exploiting water-dissolvable polymers have been introduced to directly transfer electronics to the skin increasing conformality and adhesion. However, water-dissolvable polymers cannot be anchored on the skin while maintaining electrical properties because water-based sweat can destroy the polymer substrate. In this study, we present a transparent and skin-attachable electrode (TSE) composed of highly conductive silver nanowires and biocompatible polyurethane composite using surface redissolution by ethanol. The TSE can be fabricated into various patterns by a simple fabrication method and firmly mounted on the skin. There was no reddishness or residue on the attached spot after detachment. Additionally, the TSE showed low mechanical modulus of 225 kPa and an optical transmittance of ≈70% at 550 nm. Stable and conformal contact with the skin leads to effective body motion sensing and sensitive electrophysiological signal acquisition due to the low electrical interfacial impedance.

Original languageEnglish
Article number2200968
JournalAdvanced Materials Technologies
Volume8
Issue number3
DOIs
Publication statusPublished - 2023 Feb 10

Bibliographical note

Publisher Copyright:
© 2022 Wiley-VCH GmbH.

All Science Journal Classification (ASJC) codes

  • General Materials Science
  • Mechanics of Materials
  • Industrial and Manufacturing Engineering

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