Abstract
This letter demonstrates the single crystallization of thin films on unordered substrates (amorphous materials) with a discrete surface energy distribution, even if the substrate surface is flat. This crystallization, called periodic surface energy driven single crystallization, arises from the periodic stripe patterns of different materials with different surface energy. An example that facetted KCl single crystals can be grown on the SiO2-Si3N4 stripe patterns is shown.