Mystery Behind Red Gold: Nanoscale Optics and Biomedical Frontiers

This article sheds light on the mystery behind red gold. The optical properties of gold can be modified at the nanoscale level according to the applications in which it is used. For instance, bright yellow gold bullion can be turned into ruby red when it is synthesized at the nanoscale. Recently, spherical gold nanoparticles have gained huge attention due to their wide range of applications. Gold nanoparticles have long been part of human history. In this manuscript, we explore why they attract such enthusiasm across a wide range of scientific fields. We focus on the physical and electrical attributes of gold nanoparticles, with an emphasis on their potential applications in the biomedicine field that have a significant influence on human lives.