Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers

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We investigate the capabilities of an effective non-retarded formalism (ENR) for the exploration and design of nanoparticle composites with specific optical properties. We consider a composite material comprising periodically distributed metallic spheres in a dielectric host matrix. The effective ma...

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Autores principales: Ortiz, G., Inchaussandague, M., Skigin, D., Depine, R., Mochán, W.L.
Formato: JOUR
Materias:
effective media
nanoparticles
optical resonances
recursive methods
thin films
tunable absorbers
Composite materials
Metallic matrix composites
Nanoparticles
Optical properties
Quantum optics
Resonance
Thin films
Effective media
Electromagnetic response
Inhomogeneous materials
Korringa-kohn-rostoker
Optical resonance
Recursive methods
Specific optical properties
Nanocomposite films
Acceso en línea:http://hdl.handle.net/20.500.12110/paper_20408978_v16_n10_p_Ortiz
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Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA) de Universidad de Buenos Aires
id todo:paper_20408978_v16_n10_p_Ortiz
record_format dspace
spelling todo:paper_20408978_v16_n10_p_Ortiz2023-10-03T16:37:48Z Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers Ortiz, G. Inchaussandague, M. Skigin, D. Depine, R. Mochán, W.L. effective media nanoparticles optical resonances recursive methods thin films tunable absorbers Composite materials Metallic matrix composites Nanoparticles Optical properties Quantum optics Resonance Thin films Effective media Electromagnetic response Inhomogeneous materials Korringa-kohn-rostoker Optical resonance Recursive methods Specific optical properties tunable absorbers Nanocomposite films We investigate the capabilities of an effective non-retarded formalism (ENR) for the exploration and design of nanoparticle composites with specific optical properties. We consider a composite material comprising periodically distributed metallic spheres in a dielectric host matrix. The effective macroscopic dielectric function of the composite medium is obtained by means of the ENR and is used to calculate the electromagnetic response of a slab made of an inhomogeneous material. This response is compared with that obtained by using the layer Korringa-Kohn-Rostoker wave calculation method (LKKR). We analyze the optical properties for different filling fractions, especially in the vicinity of the resonance frequencies of the macroscopic dielectric function. We notice that for dense systems within the long wavelength regime, the results of some analytical theories developed by other authors do not properly describe the multipolar excitations and interactions of orders higher than the dipole, in contrast with the results obtained by using an ENR. Therefore, those methods are not suitable for the design of compound films with novel properties. We show that by appropriately choosing the parameters of the composite, it is possible to achieve a tunable absorber film, and more generally, we show that ENR is a versatile tool for the design of nanoparticle composite materials with specific properties. © 2014 IOP Publishing Ltd. Fil:Ortiz, G. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Inchaussandague, M. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Skigin, D. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. Fil:Depine, R. Universidad de Buenos Aires. Facultad de Ciencias Exactas y Naturales; Argentina. JOUR info:eu-repo/semantics/openAccess http://creativecommons.org/licenses/by/2.5/ar http://hdl.handle.net/20.500.12110/paper_20408978_v16_n10_p_Ortiz
institution Universidad de Buenos Aires
institution_str I-28
repository_str R-134
collection Biblioteca Digital - Facultad de Ciencias Exactas y Naturales (UBA)
topic effective media
nanoparticles
optical resonances
recursive methods
thin films
tunable absorbers
Composite materials
Metallic matrix composites
Nanoparticles
Optical properties
Quantum optics
Resonance
Thin films
Effective media
Electromagnetic response
Inhomogeneous materials
Korringa-kohn-rostoker
Optical resonance
Recursive methods
Specific optical properties
tunable absorbers
Nanocomposite films
spellingShingle effective media
nanoparticles
optical resonances
recursive methods
thin films
tunable absorbers
Composite materials
Metallic matrix composites
Nanoparticles
Optical properties
Quantum optics
Resonance
Thin films
Effective media
Electromagnetic response
Inhomogeneous materials
Korringa-kohn-rostoker
Optical resonance
Recursive methods
Specific optical properties
tunable absorbers
Nanocomposite films
Ortiz, G.
Inchaussandague, M.
Skigin, D.
Depine, R.
Mochán, W.L.
Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
topic_facet effective media
nanoparticles
optical resonances
recursive methods
thin films
tunable absorbers
Composite materials
Metallic matrix composites
Nanoparticles
Optical properties
Quantum optics
Resonance
Thin films
Effective media
Electromagnetic response
Inhomogeneous materials
Korringa-kohn-rostoker
Optical resonance
Recursive methods
Specific optical properties
tunable absorbers
Nanocomposite films
description We investigate the capabilities of an effective non-retarded formalism (ENR) for the exploration and design of nanoparticle composites with specific optical properties. We consider a composite material comprising periodically distributed metallic spheres in a dielectric host matrix. The effective macroscopic dielectric function of the composite medium is obtained by means of the ENR and is used to calculate the electromagnetic response of a slab made of an inhomogeneous material. This response is compared with that obtained by using the layer Korringa-Kohn-Rostoker wave calculation method (LKKR). We analyze the optical properties for different filling fractions, especially in the vicinity of the resonance frequencies of the macroscopic dielectric function. We notice that for dense systems within the long wavelength regime, the results of some analytical theories developed by other authors do not properly describe the multipolar excitations and interactions of orders higher than the dipole, in contrast with the results obtained by using an ENR. Therefore, those methods are not suitable for the design of compound films with novel properties. We show that by appropriately choosing the parameters of the composite, it is possible to achieve a tunable absorber film, and more generally, we show that ENR is a versatile tool for the design of nanoparticle composite materials with specific properties. © 2014 IOP Publishing Ltd.
format JOUR
author Ortiz, G.
Inchaussandague, M.
Skigin, D.
Depine, R.
Mochán, W.L.
author_facet Ortiz, G.
Inchaussandague, M.
Skigin, D.
Depine, R.
Mochán, W.L.
author_sort Ortiz, G.
title Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
title_short Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
title_full Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
title_fullStr Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
title_full_unstemmed Effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
title_sort effective non-retarded method as a tool for the design of tunable nanoparticle composite absorbers
url http://hdl.handle.net/20.500.12110/paper_20408978_v16_n10_p_Ortiz
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AT skigind effectivenonretardedmethodasatoolforthedesignoftunablenanoparticlecompositeabsorbers
AT depiner effectivenonretardedmethodasatoolforthedesignoftunablenanoparticlecompositeabsorbers
AT mochanwl effectivenonretardedmethodasatoolforthedesignoftunablenanoparticlecompositeabsorbers
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