Gold nanoparticles are some of the most extensively studied
materials. These can be easily synthesized, exhibit intense surface
plasmon resonance and display high chemical as well as thermal
stability [1]. A variety of gold structures including rods, triangles,
hexagons, octagons, cubes and nanowires can be synthesized by
using different techniques [2–5]. Studies on the morphological
behavior of gold nanostructures and their evolution into microcrystals
or microwires are significant because of their wide use in
catalysis, optics, optical electronics, microelectronics, biodiagnostics,
imaging, biological and chemical sensing techniques [1,6,7].