1. Does Shining Light on Gold Colloids Influence Aggregation?
- Author
-
Bhattacharya, Susmita, Narasimha, Suda, Roy, Anushree, and Banerjee, Soumitro
- Subjects
COLLOIDS ,ELECTROSTATIC interaction ,TWO-electron atoms ,LIGHT scattering ,IMAGE processing ,COLLOIDAL gold - Abstract
In this article we revisit the much-studied behavior of self-assembled aggregates of gold colloidal particles. In the literature, the electrostatic interactions, van der Waals interactions, and the change in free energy due to ligand-ligand or ligand-solvent interactions are mainly considered to be the dominating factors in determining the characteristics of the gold aggregates. However, our light scattering and imaging experiments clearly indicate a distinct effect of light in the growth structure of the gold colloidal particles. We attribute this to the effect of a non-uniform distribution of the electric field in aggregated gold colloids under the influence of light. [ABSTRACT FROM AUTHOR]
- Published
- 2014
- Full Text
- View/download PDF