17-02-2022 дата публикации
Номер: US20220051880A1
A plasma source may include a plasma chamber, where the plasma chamber has a first side, defining a first plane and an extraction assembly, disposed adjacent to the side of the plasma chamber, where the extraction assembly includes at least two electrodes. A first electrode may be disposed immediately adjacent the side of the plasma chamber, wherein a second electrode defines a vertical displacement from the first electrode along a first direction, perpendicular to the first plane, wherein the first electrode comprises a first aperture, and the second electrode comprises a second aperture. The first aperture may define a lateral displacement from the second aperture along a second direction, parallel to the first plane, wherein the vertical displacement and the lateral displacement define a non-zero angle of inclination with respect to a perpendicular to the first plane. 1. A method of patterning a substrate , comprising:providing the substrate, wherein a main surface of the substrate defines a substrate plane, wherein the substrate comprises a grating layer and a base layer, subjacent the grating layer;generating a plasma in a plasma chamber, adjacent to the substrate; andapplying an extraction voltage to an extraction assembly, adjacent the plasma chamber, the extraction assembly comprising at least two electrodes, wherein a first electrode is disposed immediately adjacent a side of the plasma chamber, the side of the plasma chamber defining a first plane, wherein a second electrode defines a vertical displacement from the first electrode along a first direction, perpendicular to the first plane, wherein the at least two electrodes define an angled extraction tunnel, disposed at a non-zero angle of inclination with respect to a perpendicular to the substrate plane,wherein an angled ion beam is extracted from the extraction assembly, the angled ion beam defining a non-zero angle of incidence with respect to the substrate plane,wherein the angled ion beam etches the ...
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