Synthesis and Real Structure Group



Dimpling is based on the mechanical action of abrasion.
With this concave grinding method we get a radial thinned central part.

The friction of the abrasive grains generates a progressive wearing away of the material. Finer abrasives are progressively used until a smooth dimpled surface is obtained.

After the 3mm round sample is grinded to under 100µm the sample holder is placed in the magnetic bottom of the dimpler. With the optical microscope we can adjust the part of the sample, which should be dimpled. An abrasive paste is placed on the sample surface and the rotation wheel is settled down. It has a pressure control and a display over the removed thickness. With it`s concave grindind method we can dimple the sample down to under 20µm.
Now the sample is ready for the precision ion beam milling.