Effect of Hydrodynamic Dispersion of the Metal on Surface Plasmons and Surface Enhanced Phenomena in Spherical Geometries

  • G. S. Agarwal
  • S. V. O’Neil
Conference paper
Part of the Springer Series in Chemical Physics book series (CHEMICAL, volume 33)


In recent times there has been revival of interest in studying the role of surface plasmons in metallic spheres in various linear and nonlinear processes [1] that can take place in molecules adsorbed on metallic spheres. In particular, the enhancement of various cross sections due to the excitation of surface plasmons has been discussed at length, when the metal is characterized by a local dielectric function. Recent studies [2] on metallic gratings have shown that the hydrodynamic dispersion can change the local field enhancement factors considerably as well as shifting the position of various resonances. It is thus important to examine the problem of a metallic sphere in full generality. In particular it is necessary to know the electromagnetic Green’s function \( \mathop G\limits^ \Rightarrow \left( {\mathop r\limits^ \to ,{{\mathop r\limits^ \to }_{_o}},\omega } \right)\) when the metal is characterized by a nonlocal dielectric function. Such a Green’s function is known to determine the scattering cross sections and polarizability renormalizations [3].


Dielectric Function Scatter Cross Section Spherical Geometry Hydrodynamic Dispersion Additional Boundary Condition 
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Copyright information

© Springer-Verlag Berlin Heidelberg 1983

Authors and Affiliations

  • G. S. Agarwal
    • 1
  • S. V. O’Neil
    • 2
  1. 1.School of PhysicsUniversity of HyderabadHyderabadIndia
  2. 2.Joint Institute for Laboratory AstrophysicsUniversity of ColoradoBoulderUSA

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