Experimental study on behavior of initial frost crystal formation under lower water vapor pressures

This paper studies the fashion in which the initial ice crystals form on the surface under lower water vapor pressures. The fashion affects greatly the ensuing frost growth. A unique fashion of ice crystal formation was observed. Some kind of unknown surface property, but not roughness and maybe more microscopic than roughness, determined the possibility of the surface to induce frosting. There were a limited number of sites with such kind of property on the surface. Improving the conditions of those sites is possible to avoid or delay the induction of deposition.