Molecular-optical approach in the research of water dispersions with particles of nanodiamond

Abstract

The refractive index of colloids containing particles of eight separate fractions obtained from the dispersed phase of detonation diamond was studied. An analysis of the theoretical description of refraction of colloids in the framework of molecular optics is carried out. It was shown experimentally that in all eight fractions that were studied the refractive index is mainly determined by particles and aggregates of them with size less than light wave length. Larger particles have little effect on the refractive index of colloids, but determine their color and turbidity. Calculations of the refractive index of colloids using a theory of molecular optics have been carried out. In these calculations it was assumed that the dispersed phase of the colloids contained diamond and graphite. The experimental results are in agreement with the results of these. Refs 29. Figs 3. Tables 2.