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. 2023 Mar 3;8(10):9371–9378. doi: 10.1021/acsomega.2c07964

Figure 3.

Figure 3

Photothermal conversion properties. (A) Absorption spectra of BW heterostructure nanosheets and control samples. The inset pictures are corresponding samples under excitation of the 808 nm laser. (B) Whole thermal profile with the function of excitation time of 0.4 mg/mL of BW heterostructure nanosheet dispersion under 0.6 W/cm2 power density. (C) Time constant attained from the sample cooling procedure. (D) Optical and photothermal images of the 0.4 mg/mL BW heterostructure nanosheet solution under 808 nm laser excitation. (E) Power-dependent photothermal performance of the 0.4 mg/mL BW heterostructure nanosheet solution under the power changing from 0 to 0.75 W. (F) Thermal performance of the BW heterostructure nanosheet dispersion in five heating and cooling cycles.