Surface Plasmon’s Dispersion Properties of Porous Gold Films
| Autor: | E. B. Kaganovich, B. K. Serdega, L. S. Maksimenko, S. P. Rudenko, I. M. Krishchenko, A. A. Korchovyi, M. O. Stetsenko, Serhii Kryvyi |
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| Rok vydání: | 2016 |
| Předmět: |
Nanostructure
Materials science MPS Physics::Optics Nanochemistry Dispersion properties Nanotechnology Surface plasmons 02 engineering and technology 01 natural sciences Molecular physics Pulsed laser deposition 010309 optics Materials Science(all) Dispersion relation 0103 physical sciences Dispersion (optics) Gold nanoparticles General Materials Science Spectroscopy Localized and propagating modes Nano Express Surface plasmon Computer Science::Computation and Language (Computational Linguistics and Natural Language and Speech Processing) 021001 nanoscience & nanotechnology Condensed Matter Physics Spatial dispersion Porous films Group velocity PLD 0210 nano-technology |
| Zdroj: | Nanoscale Research Letters |
| ISSN: | 1556-276X 1931-7573 |
| Popis: | Nanostructure porous films with arrays of gold nanoparticles (Au NPs) have been produced by pulsed laser deposition. Dispersion properties of surface plasmons have been studied by the modulation-polarization spectroscopy technique. The dispersion relations for radiative modes and two types of non-radiative modes of localized and propagating surface plasmons were obtained. The branches of propagating modes were characterized by negative group velocity caused by spatial dispersion of dielectric function. The propagating modes are caused by dipole-dipole interactions between adjacent Au NPs. The frequencies and relaxation parameters of surface plasmon resonances and the plasma frequencies for Αu NPs were obtained. The relation between the surface plasmon's properties and formation conditions of films with arrays of Αu NPs is discussed. |
| Databáze: | OpenAIRE |
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