“…Nanoparticles have been receiving persistent attentions due to their vast area of applications such as photocatalysis [1,2], biology [3,4], photonics [5], optoelectronics [6], surface-enhanced Raman scattering [7,8], and magnetism [9]. Nanoparticles, the building block for nanotechnology, are a class of materials with properties distinctly different from their bulk or molecular counterparts.…”