Department of Physics, Indian Institute of Technology Kharagpur, India.
Department of Physical Sciences, Indian Institute of Science Education and Research, Kolkata, Mohanpur Campus, India.
Sci Rep. 2014 Jun 9;4:5213. doi: 10.1038/srep05213.
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.
在本文中，我们重新研究了经过广泛研究的胶体金颗粒自组装聚集体的行为。在文献中，静电相互作用、范德华相互作用以及配体-配体或配体-溶剂相互作用引起的自由能变化主要被认为是决定金聚集体特性的主导因素。然而，我们的光散射和成像实验清楚地表明，光在金胶体颗粒的生长结构中具有明显的影响。我们将其归因于在光的影响下，聚集的金胶体中电场的不均匀分布的影响。
