title: Multi-level micro/nanotexturing by three-dimensionally controlled photofluidization and its use in plasmonic applications.
abstract: The Field-Gradient Effect extends the photofluidization of azobenzene materials to 3D, multi-level micro/nanotexturing with a newly conceptualized design strategy based on "field-gradient photofluidization". In particular, we successfully characterized the vertical gradient optical absorption within the azobenzene material and the resulting field-gradient photofluidization both theoretically and experimentally. Furthermore, we could create the heterogeneously integrated micro/nanotextures at any desired surface heights, capability that is potentially beneficial for plasmonic applications.
authors.affiliation: Graduate School of EEWS, Korea Advanced Institute of Science and Technology (KAIST), Daejeon, 305-701, Korea.
authors.forename: Hong Suk
authors.initials: HS
authors.lastname: Kang
authors.forename: Seungwoo
authors.initials: S
authors.lastname: Lee
authors.forename: Sol-Ah
authors.initials: SA
authors.lastname: Lee
authors.forename: Jung-Ki
authors.initials: JK
authors.lastname: Park
mesh_terms: D001391:Azo Compounds; D008027:Light; D055616:Microtechnology / Q000295:instrumentation / Q000379:methods*; D009038:Motion; D036103:Nanotechnology / Q000295:instrumentation / Q000379:methods*; D013499:Surface Properties
chemical_list: D001391:Azo Compounds; C009850:azobenzene
keywords: azobenzene; holography; micro/nanotexturing; photofluidization; plasmonics