title: Layer-in-layer hierarchical nanostructures fabricated by combining holographic polymerization and block copolymer self-assembly.
abstract: We report the combination of top-down and bottom-up nanomanufacturing techniques to fabricate active, hierarchically structured volume reflection gratings. Holographic polymerization (H-P) formed lamellar structures of approximately 200 nm in thickness, confining a block copolymer (BCP) to approximately 100 nm domains. Subsequently, the BCP self-assembles into nanolayers with a period of approximately 21 nm. We envisage that this approach opens a gateway to fabricating hierarchical nanostructures at different length scales.
authors.affiliation: A. J. Drexel Nanotechnology Institute and Department of Materials Science and Engineering, Drexel University, Philadelphia, Pennsylvania 19104, USA.
authors.forename: Michael J
authors.initials: MJ
authors.lastname: Birnkrant
authors.forename: Christopher Y
authors.initials: CY
authors.lastname: Li
authors.forename: Lalgudi V
authors.initials: LV
authors.lastname: Natarajan
authors.forename: Vincent P
authors.initials: VP
authors.lastname: Tondiglia
authors.forename: Richard L
authors.initials: RL
authors.lastname: Sutherland
authors.forename: Pamela F
authors.initials: PF
authors.lastname: Lloyd
authors.forename: Timothy J
authors.initials: TJ
authors.lastname: Bunning
mesh_terms: D003460:Crystallization / Q000379:methods*; D006696:Holography / Q000379:methods*; D046911:Macromolecular Substances / Q000737:chemistry; D008422:Materials Testing; D008968:Molecular Conformation; D049329:Nanostructures / Q000737:chemistry* / Q000648:ultrastructure*; D036103:Nanotechnology / Q000379:methods*; D010316:Particle Size; D011108:Polymers / Q000737:chemistry*; D013499:Surface Properties
chemical_list: D046911:Macromolecular Substances; D011108:Polymers