What are the Optical Properties of Gold Nanoparticles?
One of the most fascinating properties of gold nanoparticles is their localized surface plasmon resonance (LSPR). When these particles are exposed to light, their conduction electrons oscillate in resonance with the light wave, leading to strong absorption and scattering of specific wavelengths. This gives gold nanoparticles their characteristic colors, which can range from red to blue depending on their size and shape. The LSPR of gold nanoparticles is highly sensitive to the local environment, making them useful in various sensing applications.
