What Factors Affect the Extinction Coefficient in Nanomaterials?
Several factors can influence the extinction coefficient in nanomaterials:
- Size and Shape: The shape and size of [nanoparticles]() can lead to different [plasmonic resonances](), affecting their absorption properties. - Material Composition: Different materials have inherent optical properties. For instance, gold and silver nanoparticles exhibit strong plasmonic absorption in the visible range. - Surrounding Medium: The refractive index of the medium surrounding the nanoparticles can shift their absorption peaks. - Surface Functionalization: Modifying the surface of nanoparticles with various molecules can alter their extinction coefficient.
