Gold nanoparticles are known for their excellent optical, electronic, and chemical properties. They exhibit strong surface plasmon resonance (SPR), making them highly effective in applications like imaging and sensing. Silica, on the other hand, is biocompatible, chemically inert, and provides a stable surface for further functionalization. The combination of gold and silica creates a nanoparticle that benefits from the properties of both materials, enhancing its utility in diverse fields.
