| Issue |
Europhys. Lett.
Volume 44, Number 3, November I 1998
|
|
|---|---|---|
| Page(s) | 393 - 399 | |
| Section | Cross-disciplinary physics and related areas of science and technology | |
| DOI | https://doi.org/10.1209/epl/i1998-00484-4 | |
| Published online | 01 September 2002 | |
Fields generated by a rod adsorbed on an oppositely charged surface: The effect of surface ion mobility and dimensionality on screening
1
Materials Research Lab, University of California Santa Barbara - CA 93106, USA
2
Department of Chemical Engineering University of Delaware Newark - DE 19716, USA
Received:
4
May
1998
Accepted:
10
September
1998
Motivated by recent interest in the formation of DNA-surface complexes we study the effects of surface and counter-ion charges on the electrostatic fields of charged rod-like macromolecules adsorbed on oppositely charged surfaces. We find that the screening of the rod's fields, due to counter-ions and mobile surface charges, can be either exponential (leading to a finite-range interaction) in the case of weak charging or just algebraic in the case of strong surface charging. We test our analytical results with Monte Carlo simulations.
PACS: 87.15.By – Structure, bonding, conformation, configuration, and isomerism of biomolecules
© EDP Sciences, 1998
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