Patent ID: 7368395

Claim:
A method of fabricating an imprinting apparatus comprising: wet etching a semiconductor wafer polished in a [ 110 ] direction, the semiconductor wafer having a ( 110 ) horizontal surface, a portion of the ( 110 ) horizontal surface being exposed, the exposed portion being aligned between ( 111 ) vertical lattice planes of the semiconductor wafer, the semiconductor wafer being wet etched with a chemical etching solution that etches the ( 111 ) vertical lattice planes slower than a ( 110 ) horizontal lattice plane to form a trench having spaced apart ( 111 ) vertical sidewalls in the semiconductor wafer, wherein the vertical sidewalls have smooth surfaces relative to vertical sidewalls etched with a dry chemical etching process; and forming a mold with a pattern for imprinting, wherein forming a mold comprises: depositing alternating layers of a first material and a second material in the trench between the spaced apart ( 111 ) vertical sidewalls, the first material being deposited adjacent to the trench sidewalls in a first layer and deposited adjacent to the second material in subsequent layers; and selectively removing the first material from between the trench sidewalls and vertically extending portions of the second material layers, such that spaced apart vertical walls of the second material extend parallel between the ( 111 ) vertical sidewalls, the vertical walls having ends coplanar with the ( 110 ) horizontal surface of the semiconductor wafer.