Fig. 1
From: Characterization of Conventional One-Step Sodium Thiosulfate Facilitated Gold Nanoparticle Synthesis
Microwave-assisted nanoparticle synthesis. The quenched reaction resulted in the formation of only gold nuclei (520-nm peak) indicative of small gold colloid. The unquenched reaction produced an additional peak (620 nm) originally thought to be associated with the formation of gold-coated gold sulfide nanoparticles