Patent ID: 8394483

Claim:
A method for fabricating nanoscale microstructures, comprising: forming a copolymer film comprising a self-assembling block copolymer within a plurality of trenches to a thickness of about L o each trench having a width of about L o , a length of about nL o , a pitch distance between adjacent trenches of at least about 2*L o , preferential wetting sidewalls and ends, and a neutral wetting floor, with ends of the trenches aligned; and causing the copolymer film to form a single array of perpendicularly oriented cylindrical domains of a first polymer block of the block copolymer in a matrix of a second polymer block of the block copolymer within each trench of the plurality, wherein the pitch distance between each cylindrical domain within a trench is about L o , and the pitch distance between the cylindrical domains of adjacent trenches is about 2*L o .