Patent ID: 9721754
Date: 2017-08-01
CPC Classifications: B82Y,G03F,H01J

Claim:
1. A method of processing a substrate with a focussed electron beam which impinges on the substrate, the method comprising: a) generating at least one reference mark on a substrate using the focussed electron beam and at least one processing gas which comprises at least one first precursor gas, wherein generating the at least one reference mark comprises depositing a dot of material using the focussed electron beam and the at least one first precursor gas; b) determining a reference position of the at least one reference mark; c) processing the substrate using the reference position of the reference mark by depositing a removable material around an excess material by using a focussed electron beam and at least one deposition gas, and by removing the excess material together with the removable material, wherein the removable material further comprises molybdenum and oxygen; and d) removing the at least one reference mark from the substrate, wherein removing the at least one reference mark comprises directing the electron beam and at least one etching gas onto the at least one reference mark.