Optical Scattering by Dense Disordered Metal Nanoparticle Arrays

We address the optical properties of dense disordered yet well-separated metal nanoparticle arrays produced by physical vapor deposition through anodized aluminum oxide membrane masks. Using variations in synthesis parameters, the particle diameters vary from 14 to 50 nm and average center separatio...

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Published inPlasmonics (Norwell, Mass.) Vol. 9; no. 2; pp. 427 - 434
Main Authors Prikulis, Juris, Malinovskis, Uldis, Poplausks, Raimonds, Apsite, Indra, Bergs, Gatis, Erts, Donats
Format Journal Article
LanguageEnglish
Published New York Springer US 01.04.2014
Subjects
Aluminum oxide
Anodizing
Arrays
Biochemistry
Biological and Medical Physics
Biophysics
Biotechnology
Chemistry
Chemistry and Materials Science
Electric fields
Mathematical models
Nanostructure
Nanotechnology
Scattering
Silver
Depolarization
Silver
Plasmon resonance
Ultrathin anodized aluminum oxide membrane
Nanoparticle arrays
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Summary:We address the optical properties of dense disordered yet well-separated metal nanoparticle arrays produced by physical vapor deposition through anodized aluminum oxide membrane masks. Using variations in synthesis parameters, the particle diameters vary from 14 to 50 nm and average center separation from 45 to 112 nm. Ag nanoparticle arrays with no long-range periodicity exhibit apparently random formation of high-intensity depolarized regions relative to orientation of incident electric field. We analyze this behavior numerically using coupled dipole model and explain the contrast formation in recorded scattering images.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
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ISSN:1557-1955
1557-1963
DOI:10.1007/s11468-013-9639-2