title: Shifting networks to achieve subgroup symmetry properties.
abstract: A simple method for the preparation of nanomaterials with new functionality by physical displacement of a network phase is suggested, giving a change in space group symmetry and hence properties. A double gyroid structure made by the self-assembly of block copolymers is used as a model system for the demonstration of shifting networks to achieve single gyroid-like scattering properties. Free-standing single gyroid-like network materials can be fabricated to give nanophotonic properties, similar to the photonic properties of a butterfly wing structure.
authors.affiliation: Department of Chemical Engineering, National Tsing Hua University, Hsinchu, 30013, Taiwan.
authors.forename: Han-Yu
authors.initials: HY
authors.lastname: Hsueh
authors.forename: Yi-Chun
authors.initials: YC
authors.lastname: Ling
authors.forename: Hsiao-Fang
authors.initials: HF
authors.lastname: Wang
authors.forename: Lung-Yu Chang
authors.initials: LY
authors.lastname: Chien
authors.forename: Yu-Chueh
authors.initials: YC
authors.lastname: Hung
authors.forename: Edwin L
authors.initials: EL
authors.lastname: Thomas
authors.forename: Rong-Ming
authors.initials: RM
authors.lastname: Ho
keywords: bicontinuous; block copolymers; nanohybrids; photonic crystals; supergroup/subgroup