Patent ID: 8512846

Claim:
A method of fabricating a polymeric material, the method comprising: masking a neutral wetting material situated on a preferential wetting substrate to form masked and unmasked sections, each unmasked section having a width of about L o , and each masked section having a width of about nL o ; removing the unmasked sections of the neutral wetting material to expose the preferential wetting substrate; removing the mask to expose the sections of the neutral wetting material; forming an overlying material over the sections of the preferential wetting substrate and the neutral wetting material; forming a plurality of trenches in the overlying material to expose the sections of the preferential wetting substrate and the neutral wetting material oriented perpendicular to sidewalls of the trenches, each trench having preferential wetting sidewalls and ends, a width of about L o , a length of about m*(n+1)−*L o , where m is a number of sections of the preferential wetting substrate, n is a number of perpendicularly oriented cylinders, and m and n are independently 1-50, the ends of the trenches being aligned, and a pitch distance between adjacent trenches of at least about 2*L o ; forming a block copolymer material within the trenches; and causing the block copolymer material to self-assemble into cylinders of a first polymer block of the block copolymer material in a matrix of a second polymer block within each trench, the cylinders situated on the sections of the neutral wetting material in a perpendicular orientation to the preferential wetting substrate, and the cylinders situated on the sections of the preferential wetting substrate in a parallel orientation to the preferential wetting substrate, each trench containing m rows of n cylinders with the cylinders within each trench at a pitch distance of about L o and the cylinders between adjacent trenches at a pitch distance of about 2*L o .