Patent ID: 7462292

Claim:
A method of fabricating a silicon carbide imprint stamp, comprising: patterning a mold layer, the patterning consisting of a single masking step; etching the mold layer to form a cavity in the mold layer, the cavity including a first feature size that is greater than or equal to a lithography limit, the etching consisting of a single etch step; depositing a spacer layer on the mold layer, the spacer layer conformally covering a surface of the cavity; forming a spacer in the cavity by anisotropically etching the spacer layer so that the spacer is connected with a portion of the surface of the cavity and the spacer partially fills the cavity so that the cavity includes a second feature size that is less than the lithography limit; depositing a material comprising silicon carbide in the cavity and on the spacer to form a feature positioned in the cavity and a foundation layer connected with the feature and at least a portion of the feature includes the second feature size; planarizing the foundation layer to form a substantially planar surface; bonding a handling substrate with the foundation layer by applying heat and pressure to the handling substrate and the mold layer until the handling substrate and the foundation layer form a mechanical bond with each other; and extracting the silicon carbide imprint stamp by releasing the feature and the foundation layer from the mold layer.