Nonlocal effects in the optical response of composite materials with metallic nanoparticles

R. Chang; H.-P. Chiang; P.T. Leung; Din-ping Tsai; W.S. Tse

doi:10.1016/j.ssc.2004.11.014

Nonlocal effects in the optical response of composite materials with metallic nanoparticles

R. Chang, H.-P. Chiang, P.T. Leung, Din-ping Tsai, W.S. Tse

Research output: Journal article publication › Journal article › Academic research › peer-review

36 Citations (Scopus)

Abstract

A phenomenological model for the optical response of composite materials with metallic nanoparticles is presented. This model applies the conventional effective medium theories (EMT) but takes into account the spatial dispersion effects in the dielectric response of the metallic nanoparticles. This leads to an EMT that depends on the size of the particles. Numerical results from a model computation shows that this effect due to the nonlocal optical response of the nanoparticles can increase the resonant absorption frequency of the composite significantly for particles of very small sizes; and can lead to resonant absorption even in the Bruggeman symmetric EMT - a feature which is believed to be absent in the conventional treatment where local response for the metal particles has been assumed. © 2004 Elsevier Ltd. All rights reserved.

Original language	English
Pages (from-to)	315-320
Number of pages	6
Journal	Solid State Communications
Volume	133
Issue number	5
DOIs	https://doi.org/10.1016/j.ssc.2004.11.014
Publication status	Published - 1 Jan 2005
Externally published	Yes

Keywords

A. Disordered systems
D. Optical properties

ASJC Scopus subject areas

General Chemistry
Condensed Matter Physics
Materials Chemistry

More information

10.1016/j.ssc.2004.11.014

Cite this

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abstract = "A phenomenological model for the optical response of composite materials with metallic nanoparticles is presented. This model applies the conventional effective medium theories (EMT) but takes into account the spatial dispersion effects in the dielectric response of the metallic nanoparticles. This leads to an EMT that depends on the size of the particles. Numerical results from a model computation shows that this effect due to the nonlocal optical response of the nanoparticles can increase the resonant absorption frequency of the composite significantly for particles of very small sizes; and can lead to resonant absorption even in the Bruggeman symmetric EMT - a feature which is believed to be absent in the conventional treatment where local response for the metal particles has been assumed. {\textcopyright} 2004 Elsevier Ltd. All rights reserved.",

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AU - Chang, R.

AU - Chiang, H.-P.

AU - Leung, P.T.

AU - Tsai, Din-ping

AU - Tse, W.S.

PY - 2005/1/1

Y1 - 2005/1/1

N2 - A phenomenological model for the optical response of composite materials with metallic nanoparticles is presented. This model applies the conventional effective medium theories (EMT) but takes into account the spatial dispersion effects in the dielectric response of the metallic nanoparticles. This leads to an EMT that depends on the size of the particles. Numerical results from a model computation shows that this effect due to the nonlocal optical response of the nanoparticles can increase the resonant absorption frequency of the composite significantly for particles of very small sizes; and can lead to resonant absorption even in the Bruggeman symmetric EMT - a feature which is believed to be absent in the conventional treatment where local response for the metal particles has been assumed. © 2004 Elsevier Ltd. All rights reserved.

AB - A phenomenological model for the optical response of composite materials with metallic nanoparticles is presented. This model applies the conventional effective medium theories (EMT) but takes into account the spatial dispersion effects in the dielectric response of the metallic nanoparticles. This leads to an EMT that depends on the size of the particles. Numerical results from a model computation shows that this effect due to the nonlocal optical response of the nanoparticles can increase the resonant absorption frequency of the composite significantly for particles of very small sizes; and can lead to resonant absorption even in the Bruggeman symmetric EMT - a feature which is believed to be absent in the conventional treatment where local response for the metal particles has been assumed. © 2004 Elsevier Ltd. All rights reserved.

KW - A. Disordered systems

KW - D. Optical properties

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DO - 10.1016/j.ssc.2004.11.014

M3 - Journal article

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SP - 315

EP - 320

JO - Solid State Communications

JF - Solid State Communications

IS - 5

ER -

Nonlocal effects in the optical response of composite materials with metallic nanoparticles

Abstract

Keywords

ASJC Scopus subject areas

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