Materials Science - a Chalmers Area of Advance
24 - Nanocosmos
Dark-field microscopy image of ~90 nm gold nanospheres on oxidized silicon substrate. Gold nanoparticles efficiently scatter light due to phenomenon called Localized Surface Plasmon Resonance. So despite the diffraction limit of the optical microscope, they can be observed as bright points against dark background. Each green dot is the scattering from a SINGLE gold nanosphere, so each gold particle can be used for single particle studies. The intense blue and white colors in the center of the image are the combined result of scattering from gold nanoparticles and residues of stabilizing polymer still covering them. Scale bar 10 μm.
24 - Nanocosmos
Dark-field microscopy image of ~90 nm gold nanospheres on oxidized silicon substrate. Gold nanoparticles efficiently scatter light due to phenomenon called Localized Surface Plasmon Resonance. So despite the diffraction limit of the optical microscope, they can be observed as bright points against dark background. Each green dot is the scattering from a SINGLE gold nanosphere, so each gold particle can be used for single particle studies. The intense blue and white colors in the center of the image are the combined result of scattering from gold nanoparticles and residues of stabilizing polymer still covering them. Scale bar 10 μm.