Fig. 2

a Temperature elevation of TPNs at varying concentrations under 808 nm laser irradiation (2 W·cm^− 2, 10 min). b Temperature elevation of TPNs/ICG-cRGD at different concentrations under 808 nm laser irradiation (2 W·cm^− 2, 10 min). c Photothermal conversion of TPNs/ICG-cRGD under 808 nm laser irradiation (2 W·cm^− 2). d Temperature changes in TPNs/ICG-cRGD and free ICG over six cycles of repeated laser irradiation. e Infrared thermal images of TPNs/ICG-cRGD, TPNs and free ICG under 808 nm laser irradiation (2 W·cm^− 2, 5 min). f Peak temperature profiles of TPNs/ICG-cRGD, TPNs and free ICG under 808 nm laser irradiation (2 W·cm^− 2, 5 min)