title: Equal intensity double plasmon resonance of bimetallic quasi-nanocomposites based on sandwich geometry.
abstract: We report a strategy to achieve a material showing equal intensity double plasmon resonance (EIDPR) based on sandwich geometry. We studied the interaction between localized plasmon resonances associated with different metal clusters (Au/Ag) on Teflon AF (TAF) in sandwich geometry. Engineering the EIDPR was done by tailoring the amount of Au/Ag and changing the TAF thickness. The samples were investigated by transmission electron microscopy (TEM) and UV-visible spectroscopy. Interestingly, and in agreement with the dipole-surface interaction, the critical barrier thickness for an optimum EIDPR was observed at 3.3 nm. The results clearly show a plasmon sequence effect and visualize the role of plasmon decay.
authors.affiliation: Chair for Multicomponent Materials, Technical Faculty of the CAU Kiel, Kaiserstrasse 2, D-24143 Kiel, Germany.
authors.forename: V S K
authors.initials: VS
authors.lastname: Chakravadhanula
authors.forename: M
authors.initials: M
authors.lastname: Elbahri
authors.forename: U
authors.initials: U
authors.lastname: Schürmann
authors.forename: H
authors.initials: H
authors.lastname: Takele
authors.forename: H
authors.initials: H
authors.lastname: Greve
authors.forename: V
authors.initials: V
authors.lastname: Zaporojtchenko
authors.forename: F
authors.initials: F
authors.lastname: Faupel