In this work, in situ transmission electron microscopy heating has been used to investigate the effects of a carbon capping layer on sintering of silver nanoparticles. For the first time, we make direct and real-time measurements of surface diffusivity of silver in nanoparticles coated with carbon. We observe that the carbon surface coatings may significantly inhibit sintering in silver nanoparticles.
The analysis of the effects of a carbon capping layer on sintering of silver nanoparticles. The researchers measured the surface diffusity of carbon-coated silver nanoparticles both directly and in real time. They concluded that the carbon surface coating could significantly suppress sintering in silver nanoparticles.