title: Gradual plasmon evolution and huge infrared near-field enhancement of metallic bridged nanoparticle dimers.
abstract: By three-dimensional (3D) finite element method (FEM) plasmon mapping, gradual plasmon evolutions of both bonding dipole plasmon (BDP) and charge transfer plasmon (CTP) modes are visualized. In particular, the evolved BDP mode provides a physical insight into the rapid degeneration of electromagnetic hot spots in practical applications, while the rising CTP mode enables a huge near-field enhancement for potential plasmonic devices at infrared wavelengths.
authors.affiliation: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Yu
authors.initials: Y
authors.lastname: Huang
authors.affiliation: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Lingwei
authors.initials: L
authors.lastname: Ma
authors.affiliation: State Key Laboratory of New Ceramics and Fine Processing, School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China.
authors.forename: Mengjing
authors.initials: M
authors.lastname: Hou
authors.affiliation: High-Tech Institute of Xi'an, Shaanxi 710025, P. R. China.
authors.forename: Zheng
authors.initials: Z
authors.lastname: Xie
authors.affiliation: Key Laboratory of Advanced Materials (MOE), School of Materials Science and Engineering, Tsinghua University, Beijing 100084, P. R. China. zjzhang@mail.tsinghua.edu.cn.
authors.forename: Zhengjun
authors.initials: Z
authors.lastname: Zhang