Abstract
Structural evolution of copper oxide nanoparticles is examined, especially with respect to Ostwald ripening under electron beam irradiation. Dissolution of the smaller particles into the larger one was clearly observed at the atomic scale using advanced transmission electron microscope.
Highlights
Structural evolution of copper oxide nanoparticles is examined, especially with respect to Ostwald ripening under electron beam irradiation
Transmission electron microscopy (TEM) is adequate to demonstrate the phenomenon associated with atomic diffusion and migration using state-of-theart techniques (Bell et al 2010)
We show in-situ structural evolution in copper oxide nanoparticles (CuxO NPs), especially in terms of crystallization and Ostwald ripening under electron beam irradiation in TEM
Summary
Structural evolution of copper oxide nanoparticles is examined, especially with respect to Ostwald ripening under electron beam irradiation. Description Ostwald ripening is a well-known crystal growth phenomenon, arising from unbalanced atomic diffusion from smaller nanoparticles with higher surface energy to bigger one (Voorhees 1985; Kuo et al 2013; Ouyang et al 2013). Transmission electron microscopy (TEM) is adequate to demonstrate the phenomenon associated with atomic diffusion and migration using state-of-theart techniques (Bell et al 2010).
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