Fig. 6: Photothermal heating performance of PMPPF electrical device.

a Schematic diagram of simulated photo-thermal test model. (Laser height = 10 cm) b Ultraviolet-vis-NIR absorbance of PDA, MXene and PDA/MXene nanocomposites aqueous dispersions. c The temperature-time curve of PM prepared with different MXene coating times. d The temperature-time curve of PP, PM, PMP, PMPP, and PMPPF. e The temperature-time curve of PMPPF (lower surface) under different power densities and f corresponding linear fitting curve of the relationship between equilibrium temperature and NIR laser power densities. g Temperature curves for 5 laser on/off cycles. h IR images of PU, PMP, and PMPP (Power density = 0.19 W·cm−2).