Fig. 4
a The temperature change curves of PBS (control), TiS2/RV, or IR780-TiS2/RV-treated cells under a 3-min NIR irradiation (808 nm, 0.3 W/cm2). b In vitro cytotoxicity against CT26 cells treated with different concentrations of IR780-TiS2. c Cell viability of cells treated with RV with or without NIR irradiation (808 nm, 0.3 W/cm2) for 3 min. d Cell viability of cells treated with IR780-TiS2, RV, TiS2/RV, or IR780-TiS2/RV with or without NIR irradiation (808 nm, 0.3 W/cm2) for 3 min. **P < 0.01, compared with IR780-TiS2/RV without NIR group alone