Fig. 3: Physicochemical and morphological characterization of the RCD.
From: Multifunctional bilayer radiative cooling dressing for regenerative wound healing under heat stress
a Photographs of the bilayer configuration showing the top RC layer (white) and bottom drug-loaded layer (blue), together with mechanical flexibility (foldable, rollable) and self-adhesion to moist human skin enabled by the hydrophilic bottom layer. b, c Scanning electron micrograph and corresponding fiber diameter distribution of the RC layer with randomly embedded SiO₂ nanoparticles (1.96 wt%). d, e Scanning electron micrograph and fiber diameter distribution of the drug-loaded layer. f Static water contact angle of PVA and PVA/SiO₂ composites with varying eugenol (EO) content (0–0.5 wt%). g Water vapor transmission rate (WVTR) of commercial adhesive bandage (CAB), gauze, and RCD. h Swelling ratios of CAB, gauze, and RCD
