Fig. 7
A Schematic diagram of rGO–AuNP–PEG synthesis and PAI-guided PTT for cancer ablation in the NIR-II window. B TEM images, C hydrodynamic distribution, D UV–vis spectra, and E SERS spectra of rGO–AuNPs. F PA images and G PA amplitude after 1250 nm laser irradiation. H In vivo SERS signal of the tumor and its surrounding tissues to determine the boundary between tumor and normal tissue. The image was reproduced from article published by Kang, Eom, Kim, Han and co-workers in Biomedicines journal in the year 2022 [116] and Wang, Wang and co-workers in Frontiers in Bioengineering and Biotechnology in the year 2020 [117]