Monodisperse silica nanospheres and microspheres
Monodisperse plain SiO2 silica nanospheres and microspheres
When uniformly sized nanospheres (200-450nm) are arranged in close packing fashion we able to see the diffraction of light
Scanning Electron Microscopy image of 1.5μm uniform plain SiO2 microspheres
Scanning Electron Microscopy image of close packed 300 nm uniform plain SiO2 nanospheres