Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles

C. W. Chen; H. Y. Chung; H. P. Chiang; J. Y. Lu; R. Chang; D. P. Tsai; P. T. Leung

doi:10.1007/s00339-010-5778-x

Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles

C. W. Chen
, H. Y. Chung
, H. P. Chiang
, J. Y. Lu
, R. Chang
, D. P. Tsai
, P. T. Leung

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

5 Citations (Scopus)

Abstract

The optical properties of composites with metallic nanoparticles are studied, taking into account the effects due to the nonlocal dielectric response of the metal and the coalescing of the particles to form clusters. An approach based on various effective medium theories is followed, and the modeling results are compared with those from the cases with local response and particles randomly distributed through the host medium. Possible observations of our modeling results are illustrated via a calculation of the transmission of light through a thin film made of these materials. It is found that the nonlocal effects are particularly significant when the particles coalesce, leading to blue-shifted resonances and slightly lower values in the dielectric functions. The dependence of these effects on the volume fraction and fractal dimension of the metal clusters is studied in detail. © 2010 Springer-Verlag.

Original language	English
Pages (from-to)	191-198
Journal	Applied Physics A: Materials Science and Processing
Volume	101
Issue number	1
DOIs	https://doi.org/10.1007/s00339-010-5778-x
Publication status	Published - Oct 2010
Externally published	Yes

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Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

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title = "Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles",

abstract = "The optical properties of composites with metallic nanoparticles are studied, taking into account the effects due to the nonlocal dielectric response of the metal and the coalescing of the particles to form clusters. An approach based on various effective medium theories is followed, and the modeling results are compared with those from the cases with local response and particles randomly distributed through the host medium. Possible observations of our modeling results are illustrated via a calculation of the transmission of light through a thin film made of these materials. It is found that the nonlocal effects are particularly significant when the particles coalesce, leading to blue-shifted resonances and slightly lower values in the dielectric functions. The dependence of these effects on the volume fraction and fractal dimension of the metal clusters is studied in detail. {\textcopyright} 2010 Springer-Verlag.",

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Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles. / Chen, C. W.; Chung, H. Y.; Chiang, H. P. et al.
In: Applied Physics A: Materials Science and Processing, Vol. 101, No. 1, 10.2010, p. 191-198.

Research output: Journal Publications and Reviews › RGC 21 - Publication in refereed journal › peer-review

TY - JOUR

T1 - Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles

AU - Chen, C. W.

AU - Chung, H. Y.

AU - Chiang, H. P.

AU - Lu, J. Y.

AU - Chang, R.

AU - Tsai, D. P.

AU - Leung, P. T.

N1 - Publication details (e.g. title, author(s), publication statuses and dates) are captured on an “AS IS” and “AS AVAILABLE” basis at the time of record harvesting from the data source. Suggestions for further amendments or supplementary information can be sent to [email protected].

PY - 2010/10

Y1 - 2010/10

N2 - The optical properties of composites with metallic nanoparticles are studied, taking into account the effects due to the nonlocal dielectric response of the metal and the coalescing of the particles to form clusters. An approach based on various effective medium theories is followed, and the modeling results are compared with those from the cases with local response and particles randomly distributed through the host medium. Possible observations of our modeling results are illustrated via a calculation of the transmission of light through a thin film made of these materials. It is found that the nonlocal effects are particularly significant when the particles coalesce, leading to blue-shifted resonances and slightly lower values in the dielectric functions. The dependence of these effects on the volume fraction and fractal dimension of the metal clusters is studied in detail. © 2010 Springer-Verlag.

AB - The optical properties of composites with metallic nanoparticles are studied, taking into account the effects due to the nonlocal dielectric response of the metal and the coalescing of the particles to form clusters. An approach based on various effective medium theories is followed, and the modeling results are compared with those from the cases with local response and particles randomly distributed through the host medium. Possible observations of our modeling results are illustrated via a calculation of the transmission of light through a thin film made of these materials. It is found that the nonlocal effects are particularly significant when the particles coalesce, leading to blue-shifted resonances and slightly lower values in the dielectric functions. The dependence of these effects on the volume fraction and fractal dimension of the metal clusters is studied in detail. © 2010 Springer-Verlag.

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DO - 10.1007/s00339-010-5778-x

M3 - RGC 21 - Publication in refereed journal

SN - 0947-8396

VL - 101

SP - 191

EP - 198

JO - Applied Physics A: Materials Science and Processing

JF - Applied Physics A: Materials Science and Processing

IS - 1

ER -

Nonlocality and particle-clustering effects on the optical response of composite materials with metallic nanoparticles

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