Figure 7. The wearability of photothermal membranes. (a) The
photothermal performance of membranes on human skin. (b) The
photothermal maps of membranes on human skin. (c) Indoor performance of
wearable photothermal membranes (0.3Wm-2 sunlight, 21
˚C). (Sp1 is the temperature of PLLA; Sp2 is the temperature of the
photothermal membrane; Sp3 is the temperature of human skin;The
membranes (20 µm) are glued to cotton fabrics and contact directly with
the human skin.) (d) Outdoor performance of wearable photothermal
membranes (865Wm-2, 21 ˚C). (e) Investigation of cell
viability (e: 12h; f: 24h), showing the good biocompatibility of
photothermal membranes.