title: Directed assembly of block copolymer blends into nonregular device-oriented structures.
abstract: Self-assembly is an effective strategy for the creation of periodic structures at the nanoscale. However, because microelectronic devices use free-form design principles, the insertion point of self-assembling materials into existing nanomanufacturing processes is unclear. We directed ternary blends of diblock copolymers and homopolymers that naturally form periodic arrays to assemble into nonregular device-oriented structures on chemically nanopatterned substrates. Redistribution of homopolymer facilitates the defect-free assembly in locations where the domain dimensions deviate substantially from those formed in the bulk. The ability to pattern nonregular structures using self-assembling materials creates new opportunities for nanoscale manufacturing.
authors.affiliation: Department of Chemical and Biological Engineering and Center for Nanotechnology, University of Wisconsin (UW), Madison, WI 53706, USA.
authors.forename: Mark P
authors.initials: MP
authors.lastname: Stoykovich
authors.forename: Marcus
authors.initials: M
authors.lastname: Müller
authors.forename: Sang Ouk
authors.initials: SO
authors.lastname: Kim
authors.forename: Harun H
authors.initials: HH
authors.lastname: Solak
authors.forename: Erik W
authors.initials: EW
authors.lastname: Edwards
authors.forename: Juan J
authors.initials: JJ
authors.lastname: de Pablo
authors.forename: Paul F
authors.initials: PF
authors.lastname: Nealey