An insight into the Coulombic interaction in the dynamic growth of oriented-attachment nanorods

Abstract

The dynamic evolution of the Coulombic interaction between a growing nanorod and an attaching nanoparticle in oriented-attachment growth is investigated via a recently-derived Coulombic interaction expression. With the incorporation of aspect ratio into each evaluation, the correlation between the Coulombic interaction and parameters including charge density, aspect ratio, synthetic temperature and nanoparticle–nanorod separation, is analyzed in detail. The analysis largely improves our understanding of the dynamic oriented-attachment growth from a fundamental energy perspective.