Fig. 2

Photothermal performance. A Photothermal temperature curves of PEG-MoS₂ and B M@D/G@M dispersed in water at various concentrations of 6.25, 12.5, 25, 50 and 100 µg mL⁻¹ under 808-nm laser (1 W) irradiation for 5 min, water as a negative control. C Temperature variation curve of PEG-MoS₂ and M@D/G@M under 808 nm laser (1 W) irradiation. D Plot of cooling time versus negative natural logarithm of the temperature driving force. The time constants of PEG-MoS₂ and M@D/G@M were calculated to be τ_s = 152.84 s and 164.38 s, respectively. E Temperature changes of PEG-MoS₂ aqueous solutions (0.5 mg mL⁻¹) over four ON/OFF cycles of 808 nm laser irradiation (1 W)