, Volume 7, Issue 1, pp 137–141 | Cite as

Optical Plasmon Properties of Co-Ag Nanocomposites Within the Mean-Field Approximation

  • Hernando Garcia
  • Ritesh Sachan
  • Ramki Kalyanaraman


The optical properties of multi-metal nanocomposites made from Cobalt (Co), and Silver (Ag) are analyzed theoretically within the mean field approximation, and experimentally verified using absorption spectroscopy. The experimental system was modeled as a thin layer composed of hemispherical nanoparticles formed by grains of Co and Ag in contact with air and the SiO\(_{\text{2}}\) substrate. The main aspects of the absorption curve, such as the shape and spectral location of the localized surface plasmon resonance, are well captured by a simple self-consistent mixing model using a modified Maxwell-Garnett approach and the Milton lower bound.


Plasmon Nanoparticles Mean-field Composites Ag 



HG acknowledges support by the NSF through grant CMMI-0757547 while RK acknowledges support by NSF grants CMMI-0855949, DMR-0805258, and the NSF supported TN-SCORE program.


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Copyright information

© Springer Science+Business Media, LLC 2011

Authors and Affiliations

  • Hernando Garcia
    • 1
  • Ritesh Sachan
    • 2
    • 3
  • Ramki Kalyanaraman
    • 2
    • 3
    • 4
  1. 1.Department of PhysicsSouthern Illinois UniversityEdwardsvilleUSA
  2. 2.Department of Materials Science and EngineeringUniversity of TennesseeKnoxvilleUSA
  3. 3.Sustainable Energy and Education Research CenterUniversity of TennesseeKnoxvilleUSA
  4. 4.Department of Chemical and Biomolecular EngineeringUniversity of TennesseeKnoxvilleUSA

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