Fig. 3From: Stimuli-disassembling gold nanoclusters for diagnosis of early stage oral cancer by optical coherence tomographyCharacterization of Au NCs. Acid-responsive changes in size and morphology of Au NCs incubated in DI water and 100 mM acetate buffer (pH 5.0) at 37 °C for 2 h, confirmed by TEM (a DI water; b pH 5.0), DLS (c), and UV–Vis spectra (d)Back to article page