期刊
PHYSICAL REVIEW B
卷 83, 期 20, 页码 -出版社
AMER PHYSICAL SOC
DOI: 10.1103/PhysRevB.83.205131
关键词
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资金
- Center for Advanced Molecular Photovoltaics (CAMP) [KUSC1-015-21]
- Interconnect Focus Center
- NSF [DMS 09-68809]
- Direct For Mathematical & Physical Scien
- Division Of Mathematical Sciences [0968809] Funding Source: National Science Foundation
We develop a general perturbation theory to treat small parameter changes in dispersive plasmonic nanostructures and metamaterials. We specifically apply it to dielectric refractive index and metallic plasma frequency modulation in metal-dielectric nanostructures. As a numerical demonstration, we verify the theory's accuracy against direct calculations for a system of plasmonic rods in air where the metal is defined by a three-pole fit of silver's dielectric function. We also discuss new optical behavior related to plasma frequency modulation in such systems. Our approach provides new physical insight for the design of plasmonic devices for biochemical sensing and optical modulation and future active metamaterial applications.
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