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The density and molecular size dependence of the equation of state for molecules that consist of freely jointed, tangent hard spheres is investigated. It is shown that the properties of hard-chain mol...

Nonlocal electrodynamic modeling of frequency shifts for molecules at rough surfaces

J. Chem. Phys. 98, 5019 (1993); doi:10.1063/1.464955

Issue Date: 15 March 1993

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P. T. Leung and M. H. Hider
Department of Physics and Environmental Sciences and Resources Program, Portland State University, P. O. Box 751, Portland, Oregon 97207-0751
The problem of frequency shifts for admolecules at distances very close to a metallic substrate surface protrusion is considered. The molecule is modeled as an oscillating point dipole and the morphology of the substrate is represented by a spherical island. Nonlocal electrodynamic effects are taken into account within the hydrodynamic description of the surface electrons. The results show that the nonlocal effects will tend to suppress the frequency shifts from local theory, and to create blue-shifted higher-order dispersion resonances in the frequency shift spectrum. Possible experimental observation for such effects is discussed. The Journal of Chemical Physics is copyrighted by The American Institute of Physics.
History: Received 2 November 1992; accepted 3 December 1992
Permalink: http://link.aip.org/link/?JCPSA6/98/5019/1
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KEYWORDS and PACS

Keywords
PACS
  • 68.35.Ja
    Surfaces and interfaces; thin films and whiskers (structure and nonelectronic properties) Solid surfaces and solidsolid interfaces Surface and interface dynamics and vibrations
  • YEAR: 1993

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ISSN:
0021-9606 (print)   1089-7690 (online)
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REFERENCES (25)
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