title: Angle dependent optical properties of polymer films with a biomimetic anti-reflecting surface replicated from cylindrical and tapered nanoporous alumina.
abstract: Anodic porous alumina nanostructures have been fabricated with tapered and cylindrical pores with a spacing of 100 and 200 nm and depth of 180-500 nm. The porous nanostructures were replicated into polymer films to create a moth-eye anti-reflecting surface by a roll-to-roll UV replication process. The angle dependent optical transmission of the resulting polymer films exhibited up to a 2% increase in transmission at a normal angle and up to a 5% increase in transmission at a 70° angle of incidence to an equivalent film with a surface replicated from polished aluminum. No significant difference was observed between the optical performance of moth-eye surfaces formed from cylindrical and tapered nano-pores.
authors.affiliation: MacDermid Autotype Ltd, Grove Road, Wantage, Oxon OX12 7BZ, UK.
authors.forename: G
authors.initials: G
authors.lastname: Hubbard
authors.forename: M E
authors.initials: ME
authors.lastname: Nasir
authors.forename: P
authors.initials: P
authors.lastname: Shields
authors.forename: C R
authors.initials: CR
authors.lastname: Bowen
authors.forename: A
authors.initials: A
authors.lastname: Satka
authors.forename: K P
authors.initials: KP
authors.lastname: Parsons
authors.forename: N H
authors.initials: NH
authors.lastname: Holmes
authors.forename: D W E
authors.initials: DW
authors.lastname: Allsopp