Single crystal diamond substrates as supplied from several different manufacturers often exhibits significant top surface defects, such as pits and other large vacancies which result in a typical surface roughness of >2nm Ra as measured by Atomic Force Microscopy  (AFM). Diamond Product Solutions is able to polish these diamond plates down to sub-nanometer roughness, including optical and electronic grade material. Our polishing process developed here at Diamond Product Solutions can achieve a surface with very homogeneous roughness down toa s low as 0.2 nm, as verified by AFM measurement performed at the University of Glasgow, School of Engineering, UK.

Below and above are AFM scans taken over a 5um surface area of optical grade single crystal diamond plates,showing the improvement in surface roughness before and after polishing as well as achieving a very flat and parallel diamond plane. Images courtesy of Kevin G. Crawford , University of Glasgow, UK.