Tunable Plasmon Resonance in Ag-Au Split-Ring Resonator with Inner Metallic Cross Heterogeneous Dimer Array

The plasmon resonance behavior in Ag-Au split-ring resonator (SRR) heterogeneous dimer array has been investigated numerically by using the finite difference time domain (FDTD) method. The resonance dips were tuned with the metallic SRR dimer arrays constituted by different metals. For the Ag-Au het...

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Bibliographic Details
Published in:Journal of nanomaterials 2015-01, Vol.2015 (2015), p.1-8
Main Authors: Yang, Diwu, Tang, Bin, Wen, Shuangchun, Zhou, Xin, He, Jun
Format: Article
Language:English
Subjects:
Arrays
Behavior
Design
Dimers
Dipping
Magnetic fields
Magnetic resonance
Mathematical models
Nanomaterials
Plasmons
Resonators
Science
Silver
Spectrum analysis
Studies
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Summary:The plasmon resonance behavior in Ag-Au split-ring resonator (SRR) heterogeneous dimer array has been investigated numerically by using the finite difference time domain (FDTD) method. The resonance dips were tuned with the metallic SRR dimer arrays constituted by different metals. For the Ag-Au heterogeneous SRRs dimer array, with the arms of metallic cross lengths increasing, the resonance dips in the visible region red shifted but the locations of resonance modes in the near-infrared region kept immovability. On the contrary, the locations of resonance dips in the visible region kept immovability but the resonance modes in the near-infrared region red shifted obviously with the air cuts widths decreasing. The whole resonance dips exhibited a red-shift as the environmental dielectric constants increase. The electric and magnetic field distributions of certain resonance wavelengths were also investigated.
ISSN:1687-4110
1687-4129
DOI:10.1155/2015/568513