EGFR and neoplasm: The RGO was functionalized with PEG, CPSS (carbon porous silica nanosheets), Au nanosheets, R6G, (Rhodamine 6G a Raman reporter), and anti-EGFR (epidermal growth factor receptor for targeting tumor) for sensitive low-powered laser-efficient NIR PT therapy against A549 and MRC-5 cells [138].