https://doi.org/10.1140/epjb/e2002-00222-x
Localization of a Gaussian polymer in a weak periodic surface potential disturbed by a single defect
Martin-Luther-Universität Halle-Wittenberg, Fachbereich Physik, 06099
Halle, Germany
Corresponding author: a fedorenko@physik.uni-halle.de
Received:
18
March
2002
Published online:
19
July
2002
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 
, 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
© EDP Sciences, Società Italiana di Fisica, Springer-Verlag, 2002
