dorsal/arxiv
View SchemaOptical response of strongly coupled metal nanoparticles in dimer arrays
| Authors | J. J. Xiao, J. P. Huang, K. W. Yu |
|---|---|
| Categories | |
| ArXiv ID | physics/0411070 |
| URL | https://arxiv.org/abs/physics/0411070 |
| DOI | 10.1103/PhysRevB.71.045404 |
| Journal | Phys. Rev. B 71, 045404 (2005) |
Abstract
The optical responses of structured array of noble-metal nanoparticle dimers immersed in a glass matrix are investigated theoretically, motivated by the recent experimental observation of the splitting of the surface plasmon bands in silver arrays. To capture the strong electromagnetic coupling between the two approaching particles in a silver dimer, the spectral representation of the multiple image formula has been used, and a semiclassical description of the silver dielectric function is adopted from the literature. The splitting of plasmon resonance band of the incident longitudinal and transverse polarized light is found to be strongly dependent on the particle diameter and their separation. Our results are shown in accord with the recent experimental observation. Moreover, a large redshift for the longitudinal polarization can be reproduced. The reflectivity spectrum is further calculated for a dilute suspension of dimer arrays.
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"abstract": "The optical responses of structured array of noble-metal nanoparticle dimers\nimmersed in a glass matrix are investigated theoretically, motivated by the\nrecent experimental observation of the splitting of the surface plasmon bands\nin silver arrays. To capture the strong electromagnetic coupling between the\ntwo approaching particles in a silver dimer, the spectral representation of the\nmultiple image formula has been used, and a semiclassical description of the\nsilver dielectric function is adopted from the literature. The splitting of\nplasmon resonance band of the incident longitudinal and transverse polarized\nlight is found to be strongly dependent on the particle diameter and their\nseparation. Our results are shown in accord with the recent experimental\nobservation. Moreover, a large redshift for the longitudinal polarization can\nbe reproduced. The reflectivity spectrum is further calculated for a dilute\nsuspension of dimer arrays.",
"arxiv_id": "physics/0411070",
"authors": [
"J. J. Xiao",
"J. P. Huang",
"K. W. Yu"
],
"categories": [
"physics.optics",
"cond-mat.mtrl-sci"
],
"doi": "10.1103/PhysRevB.71.045404",
"journal_ref": "Phys. Rev. B 71, 045404 (2005)",
"title": "Optical response of strongly coupled metal nanoparticles in dimer arrays",
"url": "https://arxiv.org/abs/physics/0411070"
},
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