Journal
ACS APPLIED MATERIALS & INTERFACES
Volume 12, Issue 21, Pages 23689-23696Publisher
AMER CHEMICAL SOC
DOI: 10.1021/acsami.0c04134
Keywords
epidermal electrodes; PEDOT:PSS; silver nanowires; free-standing; pipette-transfer
Funding
- National Natural Science Foundation of China [61674064]
- Shenzhen Science and Technology Innovation Plan [JCYJ20170818170143363]
- China Postdoctoral Science Foundation [2018M640693]
- International Postdoctoral Exchange Fellowship Program [20190039]
- Fundamental Research Funds for the Central Universities of China, HUST [2016YXMS030]
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Long-term, real-time, and comfortable epidermal electronics are of great practical importance for healthcare monitoring and human-machine interaction. However, traditional physiological signal monitoring confined by the specific clinical sites and unreliability of the epidermal electrodes leads to great restrictions on its application. Herein, we constructed a solution-processed submicron (down to 230 nm), free-standing, breathable sandwich-structured hybrid electrode composed of a silver nanowire network with a conductive polymer film, which is conformal, water-permeable, and noninvasive to the skin while achieving good signal acquisition ability. The free-standing hybrid electrode is prepared via an in situ capillary force lift-off process and can be transferred onto complex surfaces. The whole process is a complete solution process that facilitates large-area preparation and application. The light-weight hybrid electrodes exhibit high optical transmittance, high electrical conductivity, and high gas/ion permeability. When the hybrid electrodes are attached onto the skin, the imperceptible films show high conformality with low electrical impedance, thus exhibiting significantly improved electrocardiology and electromyogram signal monitoring performance compared to that of the commercial gel electrodes.
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