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(a) Fabrication and self-adhesion of sub-micron fiber cardiac patch. SEM of (b) 5% PU, (c) 5% PU–3% PANI, and (d) 5% PU–3% PANI–0.5% SiO2, (e) 5% PU–6% PANI–0.5% SiO2, and (f) 5% PU–9% PANI–0.5% SiO2, and (g) fiber diameter distribution. Reprinted (adapted) with permission from [161]. Copyright 2021 American Chemical Society.
