Description:

Noble metal nanoparticles have extraordinary size-dependent optical properties that have been the subject of extensive studies. Specifically, these nanoparticles exhibit strong UV-visible scattering and absorption which is a consequence of the collective excitation of their conduction electrons. This dark field image of chemically synthesized Ag nanoparticles reveals a myriad of colors due to the different sizes and shapes of nanoparticles that are present. Because of their unique optical properties, metal nanoparticles have been used in various chemical and biological sensing techniques.
 

Previous Day/Next Day

Please contact the webmaster if you would like to submit an image