Localization of a Gaussian polymer in a weak periodic surface potential disturbed by a single defect

  • A.A. Fedorenko
  • S. Stepanow

Abstract:

Using the results of the recently studied problem of adsorption of a Gaussian polymer in a weak periodic surface potential we study the influence of a single rod like defect on the polymer being localized in the periodic surface potential. We have found that the polymer will be localized at the defect under condition u > uc, where uc is the localization threshold in the periodic potential, for any infinitesimal strength of the interaction with defect. We predict that the concentration of monomers of the localized polymer decays exponentially as a function of the distance to the defect and is modulated with the period of the surface potential.

PACS. 36.20.-r Macromolecules and polymer molecules – 82.35.Gh Polymers on surfaces; adhesion – 73.20.-r Electron states at surfaces and interfaces 

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Copyright information

© EDP Sciences, Springer-Verlag 2002

Authors and Affiliations

  • A.A. Fedorenko
    • 1
  • S. Stepanow
    • 1
  1. 1.Martin-Luther-Universität Halle-Wittenberg, Fachbereich Physik, 06099 Halle, GermanyDE

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