Real-time monitoring of oxidative etching on single Ag nanocubes via light-scattering dark-field microscopy imaging.

A low-cost and easily-conducted light-scattering dark-field microscopy imaging (iDFM) technique for real-time and in situ monitoring of the oxidative etching on a single Ag nanocube was presented by using an ordinary dark-field microscopy system, which provides an alternative approach to study the behaviors of metal nanoparticles in chemical reactions and biological processes at the single nanoparticle level.