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.
|Journal||Advanced Materials Technologies|
|Publication status||Published - 2023 Feb 10|
Bibliographical noteFunding Information:
S.‐R.K. and J.J. contributed equally to this work. This work was supported by a Korea Medical Device Development Fund grant funded by the Korean government (the Ministry of Science and ICT, the Ministry of Trade, Industry and Energy, the Ministry of Health & Welfare, the Ministry of Food and Drug Safety) (Project Number: 1711138212, KMDF_PR_20200901_0116), a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. 2021R1A2C2004297), and a National Research Foundation of Korea (NRF) grant funded by the Korean government (MSIT) (No. NRF‐2021R1A4A1032129).
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All Science Journal Classification (ASJC) codes
- Materials Science(all)
- Mechanics of Materials
- Industrial and Manufacturing Engineering