Fig. 8

Schematic illustration of reformative AuNPs-assisted SPR biosensor for determining miRNA. A Sketch of catalytic growth of AuNPs enhanced SPR biosensing. B Phase shift based on pure AuNPs addition (a) and extra catalytic growth of AuNPs (b). SPR signal was considerably improved by the catalytic effect. Reprinted with permission from ref. (Nie et al. 2018)