Method of forming regular array of microscopic structures on a substrate

摘要

A method of forming a substantially regular array of microscopic structures on a surface of a sample (4) is described. The sample comprises a microscopic layer of at least one first material on a substrate of a second material, wherein the microscopic layer is sufficiently thin that stress fields at the interface of the microscopic layer and the substrate cause formation of separated regions of the first material on the substrate. The microscopic layer on the sample (4) is irradiated by means of a particle beam (5) at an acute angle alpha, to influence the direction of alignment of said separated regions and/or the relative position of adjacent said separated regions.