Microscopic theory of optical properties of composite media with chaotically distributed nanoparticles

Journal Article · Wed Dec 29 04:00:00 EST 2010 · Quantum Electronics (Woodbury, N.Y.)

DOI:https://doi.org/10.1070/QE2010V040N11ABEH014330· OSTI ID:21541831

Shalin, A S ^[1]

---

1. V.A. Kotel'nikov Institute of Radio Engineering and Electronics, Russian Academy of Sciences, Ul'yanovsk Branch, Ul'yanovsk (Russian Federation)

The boundary problem of light reflection and transmission by a film with chaotically distributed nanoinclusions is considered. Based on the proposed microscopic approach, analytic expressions are derived for distributions inside and outside the nanocomposite medium. Good agreement of the results with exact calculations and (at low concentrations of nanoparticles) with the integral Maxwell-Garnett effective-medium theory is demonstrated. It is shown that at high nanoparticle concentrations, averaging the dielectric constant in volume as is done within the framework of the effective-medium theory yields overestimated values of the optical film density compared to the values yielded by the proposed microscopic approach. We also studied the dependence of the reflectivity of a system of gold nanoparticles on their size, the size dependence of the plasmon resonance position along the wavelength scale, and demonstrated a good agreement with experimental data. (photonics and nanotechnology)

• OSTI ID: 21541831
• Journal Information: Quantum Electronics (Woodbury, N.Y.), Journal Name: Quantum Electronics (Woodbury, N.Y.) Journal Issue: 11 Vol. 40; ISSN 1063-7818
• Country of Publication: United States
• Language: English

Related Subjects

72 PHYSICS OF ELEMENTARY PARTICLES AND FIELDS
75 CONDENSED MATTER PHYSICS
SUPERCONDUCTIVITY AND SUPERFLUIDITY
DENSITY
DIELECTRIC PROPERTIES
DISTRIBUTION
ELECTRICAL PROPERTIES
ELECTROMAGNETIC RADIATION
ELEMENTS
FILMS
GOLD
METALS
NANOSTRUCTURES
OPTICAL PROPERTIES
PARTICLES
PERMITTIVITY
PHYSICAL PROPERTIES
RADIATIONS
REFLECTIVITY
SURFACE PROPERTIES
TRANSITION ELEMENTS
VISIBLE RADIATION