title: Tunable surface-enhanced Raman scattering from high-density gold semishell arrays with controllable dimensions.
abstract: A convenient reproducible technique is reported for the fabrication of large-area gold semishell arrays by mechanically pressing porous anodic alumina (PAA) stamps into gold/polymer bilayer structures that serve as robust and cost-efficient surface-enhanced Raman-scattering (SERS) substrates. The surface structure can be tuned further to optimize the enhancement factor according to optional PAA fabrication parameters and imprinting pressures. Finite-difference time-domain calculations indicate that the structure may possess excellent SERS characteristics due to the high density and abundance of hot spots.
authors.affiliation: Department of Physics and Key Laboratory of Microelectromechanical Systems (MEMS) of the Ministry of Education, Southeast University, Nanjing 211189 (P.R. China), Fax: (+86) 025-52090600-8210.
authors.forename: Xianzhong
authors.initials: X
authors.lastname: Lang
authors.forename: Jiaqi
authors.initials: J
authors.lastname: Li
authors.forename: Xiaoguang
authors.initials: X
authors.lastname: Luo
authors.forename: Yan
authors.initials: Y
authors.lastname: Zhang
authors.forename: Yin
authors.initials: Y
authors.lastname: Yin
authors.forename: Teng
authors.initials: T
authors.lastname: Qiu
mesh_terms: D000537:Aluminum Oxide; D006046:Gold / Q000737:chemistry*; D049329:Nanostructures / Q000737:chemistry; D019904:Polymethyl Methacrylate / Q000737:chemistry; D016062:Porosity; D013059:Spectrum Analysis, Raman; D013499:Surface Properties
chemical_list: D006046:Gold; D019904:Polymethyl Methacrylate; D000537:Aluminum Oxide
keywords: gold semishell arrays; imprints; plasmon modes; porous anodic alumina; surface-enhanced Raman scattering