Fig. 2
Photothermal performance of CuS@CaO2@Dex. (A) Infrared thermographic images of CuS@CaO2@Dex. (B) Temperature elevation of CuS@CaO2@Dex with diverse concentrations under the action of laser irradiation (1064 nm, 0.75 W cm− 2). (C) Temperature elevation of CuS@CaO2@Dex (200 µg mL− 1) at varying laser power densities. (D) photostability of CuS@CaO2@Dex (200 µg mL− 1) by repeatedly adjusting the switch of laser for five times. (E) The temperature variation curve of single heating-cooling for CuS@CaO2@Dex (200 µg mL− 1, 0.75 W cm− 2). (F) The detection of time constant for CuS@CaO2@Dex via the curve during the cooling period