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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Editor: Joseph N. Mait
  • Vol. 49, Iss. 16 — Jun. 1, 2010
  • pp: 3014–3024

Simulation of optical properties of layered metallic nanoparticles embedded inside dielectric matrices: interference method or Maxwell Garnett effective-medium theory?

Maria Lucia Protopapa  »View Author Affiliations


Applied Optics, Vol. 49, Issue 16, pp. 3014-3024 (2010)
http://dx.doi.org/10.1364/AO.49.003014


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Abstract

Optical characterization of composite films consisting of a ceramic matrix with embedded layered metal nanoparticles have recently received increasing interest. In particular, two methods have been mainly proposed in order to obtain optical performances of dielectric matrices containing layered nanoclusters (NCs): the first method is based on the simulation of the layered system as composed of alternated films of dielectric material and effective-medium material. Therefore, the optical response of the multilayer stack is calculated, assigning to the effective-medium layers the dielectric constant ε f Yama , obtained by the Yamaguchi theory, and calculating the interference between the beams reflected and refracted at each interface inside the stack. The second method considers the multilayer stack as a single-layer effective-medium film whose dielectric constant is calculated by the Maxwell Garnett (MG) theory. In particular, this second method is recognized to be valid in the case of nanoparticles uniformly distributed inside a dielectric matrix. The present study shows that the interference method, as it has been applied up to now, does not allow reproducing reflectance and transmittance spectra calculated by the MG theory in the case of a uniform distribution of NCs.

© 2010 Optical Society of America

OCIS Codes
(240.6680) Optics at surfaces : Surface plasmons
(310.1620) Thin films : Interference coatings
(310.6860) Thin films : Thin films, optical properties
(160.4236) Materials : Nanomaterials

ToC Category:
Materials

History
Original Manuscript: February 22, 2010
Revised Manuscript: April 15, 2010
Manuscript Accepted: April 18, 2010
Published: May 24, 2010

Citation
Maria Lucia Protopapa, "Simulation of optical properties of layered metallic nanoparticles embedded inside dielectric matrices: interference method or Maxwell Garnett effective-medium theory?," Appl. Opt. 49, 3014-3024 (2010)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-49-16-3014


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