Home

About

Advanced Search

Browse by Discipline

Scientific Societies

E-print Alerts

Add E-prints

E-print Network
FAQHELPSITE MAPCONTACT US


  Advanced Search  

 
Dipolar Poisson-Boltzmann Equation: Ions and Dipoles Close to Charge Interfaces Ariel Abrashkin,1
 

Summary: Dipolar Poisson-Boltzmann Equation: Ions and Dipoles Close to Charge Interfaces
Ariel Abrashkin,1
David Andelman,1
and Henri Orland2
1
School of Physics and Astronomy, Raymond and Beverly Sackler Faculty of Exact Sciences, Tel Aviv University,
Ramat Aviv, Tel Aviv 69978, Israel
2
Service de Physique The´orique, CE-Saclay, 91191 Gif-sur-Yvette Cedex, France
(Received 9 May 2007; published 17 August 2007)
We present an extension to the Poisson-Boltzmann model where the dipolar features of solvent
molecules are taken explicitly into account. The formulation is derived at mean-field level and can be
extended to any order in a systematic expansion. It is applied to a two-plate system with oppositely
charged surfaces. The ion distribution and profiles in the dipolar order parameter are calculated and can
result in a large correction to the interplate pressure.
DOI: 10.1103/PhysRevLett.99.077801 PACS numbers: 61.20.Qg, 82.60.Lf, 82.70.Dd
Charged objects (ions, interfaces, and particles) im-
mersed in liquids play a central role in electrochemistry,
colloidal science, and biology ranging from electrolyte
applications, stabilization of colloidal suspensions, protein

  

Source: Andelman, David - School of Physics and Astronomy, Tel Aviv University

 

Collections: Materials Science; Physics