Figure 3

In vitro photothermal effects of Fe3O4/ICG@PLGA/PFP NPs. (a) Temperatures elevation of Fe3O4/ICG@PLGA/PFP NPs, mixture of free ICG and Fe3O4 NPs, free ICG, Fe3O4 NPs, and PBS with continuous NIR laser irradiation (808 nm, 1.0 W/cm2, 10 min). (b) Temperature changes of Fe3O4/ICG@PLGA/PFP NPs, ICG@PLGA/PFP NPs, and free ICG over four NIR laser ON/OFF cycles.