Fig. 3.

A Schematic of the scattering spectrum of Au core-satellite nanoassembly before and after incubation with Cu2+. Reprinted with permission from ref. [39], Copyright 2018 American Chemical Society. B Schematic illustration of the principle for determination of miRNA-21 (miR-21). Reprinted with permission from ref. [40], Copyright 2019 American Chemical Society. C The scheme of the specific biomolecule analysis and enzyme kinetics based on plasmon resonance energy transfer (PRET) spectroscopy on single gold nanonstars. Reprinted with permission from ref. [41], Copyright 2018 American Chemical Society. D Schematic illustration of the acid phosphatase detection based on PRET. Reprinted with permission from ref. [42], Copyright 2020 American Chemical Society