Polyelectrolyte adsorption on charged substrate

Chi Ho Cheng, Pik Yin Lai

Research output: Chapter in Book/Report/Conference proceedingConference contribution

Abstract

The behavior of a polyelectrolyte adsorbed on a charged substrate of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low enough ionic strength medium, the adsorption transition is first-order where the substrate surface charge still keeps repulsive. The monomer density at the adsorbed surface is identified as the order parameter. It follows a linear relation with substrate surface charge density because of the electrostatic boundary condition at the charged surface. During the transition, the adsorption layer thickness remains finite. A new scaling law for the layer thickness is derived and verified by simulation.

Original languageEnglish
Title of host publicationSlow Dynamics in Complex Systems
Subtitle of host publication3rd International Symposium on Slow Dynamics in Complex Systems
EditorsMichio Tokuyama, Irwin Oppenheim
PublisherAmerican Institute of Physics Inc.
Pages229-232
Number of pages4
ISBN (Electronic)0735401837
DOIs
Publication statusPublished - 2004 Apr 30
Event3rd International Symposium on Slow Dynamics in Complex Systems - Sendai, Japan
Duration: 2003 Nov 32003 Nov 8

Publication series

NameAIP Conference Proceedings
Volume708
ISSN (Print)0094-243X
ISSN (Electronic)1551-7616

Other

Other3rd International Symposium on Slow Dynamics in Complex Systems
CountryJapan
CitySendai
Period03-11-0303-11-08

Fingerprint

adsorption
scaling laws
simulation
monomers
permittivity
electrostatics
boundary conditions

All Science Journal Classification (ASJC) codes

  • Physics and Astronomy(all)

Cite this

Cheng, C. H., & Lai, P. Y. (2004). Polyelectrolyte adsorption on charged substrate. In M. Tokuyama, & I. Oppenheim (Eds.), Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems (pp. 229-232). (AIP Conference Proceedings; Vol. 708). American Institute of Physics Inc.. https://doi.org/10.1063/1.1764122
Cheng, Chi Ho ; Lai, Pik Yin. / Polyelectrolyte adsorption on charged substrate. Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. editor / Michio Tokuyama ; Irwin Oppenheim. American Institute of Physics Inc., 2004. pp. 229-232 (AIP Conference Proceedings).
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Cheng, CH & Lai, PY 2004, Polyelectrolyte adsorption on charged substrate. in M Tokuyama & I Oppenheim (eds), Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. AIP Conference Proceedings, vol. 708, American Institute of Physics Inc., pp. 229-232, 3rd International Symposium on Slow Dynamics in Complex Systems, Sendai, Japan, 03-11-03. https://doi.org/10.1063/1.1764122

Polyelectrolyte adsorption on charged substrate. / Cheng, Chi Ho; Lai, Pik Yin.

Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. ed. / Michio Tokuyama; Irwin Oppenheim. American Institute of Physics Inc., 2004. p. 229-232 (AIP Conference Proceedings; Vol. 708).

Research output: Chapter in Book/Report/Conference proceedingConference contribution

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N2 - The behavior of a polyelectrolyte adsorbed on a charged substrate of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low enough ionic strength medium, the adsorption transition is first-order where the substrate surface charge still keeps repulsive. The monomer density at the adsorbed surface is identified as the order parameter. It follows a linear relation with substrate surface charge density because of the electrostatic boundary condition at the charged surface. During the transition, the adsorption layer thickness remains finite. A new scaling law for the layer thickness is derived and verified by simulation.

AB - The behavior of a polyelectrolyte adsorbed on a charged substrate of high-dielectric constant is studied by both Monte-Carlo simulation and analytical methods. It is found that in a low enough ionic strength medium, the adsorption transition is first-order where the substrate surface charge still keeps repulsive. The monomer density at the adsorbed surface is identified as the order parameter. It follows a linear relation with substrate surface charge density because of the electrostatic boundary condition at the charged surface. During the transition, the adsorption layer thickness remains finite. A new scaling law for the layer thickness is derived and verified by simulation.

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Cheng CH, Lai PY. Polyelectrolyte adsorption on charged substrate. In Tokuyama M, Oppenheim I, editors, Slow Dynamics in Complex Systems: 3rd International Symposium on Slow Dynamics in Complex Systems. American Institute of Physics Inc. 2004. p. 229-232. (AIP Conference Proceedings). https://doi.org/10.1063/1.1764122