Figure 3

(a) Temperatures of various groups measured and imaged by an infrared thermal imaging camera. (b) Temperatures of different groups under laser irradiation (808 nm, 1.0 W/cm2, 5 min). (c) Temperature changes of the ICG/Fe3O4@PLGA-ZOL NPs, ICG@PLGA NPs and ICG solution in 3 laser ON/OFF cycles. (d) Linear regression curve of temperature cooling time (t) vs −ln(θ) of ICG/Fe3O4@PLGA-ZOL NPs.