title: Reversible recovery of nanoimprinted polymer structures.
abstract: A shape memory polymer, Nafion, has its shape memory simultaneously programmed and patterned with micro- and nanometer-scale surface textures using a nanoimprint process. Highly ordered and well-defined micro- and nanometer surface textures, for example, high aspect ratio (~5) micropillars, form the permanent shape memory of the Nafion films. When damaged, these permanently shaped micro- and nanostructures possess repair ability through a heat treatment. Reversible recoveries of the damages caused by mechanical and irradiation exposure have been demonstrated. The recovery retains above 90% of the structural fidelity, which is comparable to the shape recovery in bulk film.
authors.affiliation: Institute of Materials Research and Engineering, Agency for Science, Technology and Research, 3 Research Link, Singapore 117602, Singapore.
authors.forename: Tanu Suryadi
authors.initials: TS
authors.lastname: Kustandi
authors.forename: Wei Wei
authors.initials: WW
authors.lastname: Loh
authors.forename: Lu
authors.initials: L
authors.lastname: Shen
authors.forename: Hong Yee
authors.initials: HY
authors.lastname: Low