Fig. 3.

a Light absorption of LMM@BSA clay nanosheets solution; b the photograph of the experimental appliance; c distilled water and concentration-dependent temperature profiles of LMM@BSA clay nanosheets (NIR laser: 1 W/cm²); d corresponding thermal imaging of c; e power density-dependent temperature profiles of LMM@BSA clay nanosheets solution; f corresponding thermal imaging of e; g time constant for heat transfer of LMM@BSA clay nanosheets; h steady-state heating curve of LMM@BSA clay nanosheets and distilled water and i recycling heating profiles of LMM@BSA clay nanosheets. The unit of bar in d and f is °C