title: Curvature inducing macroion condensation driven shape changes of fluid vesicles.
abstract: We study the effect of curvature inducing macroion condensation on the shapes of charged deformable fluid interfaces using dynamically triangulated Monte Carlo simulations. In the weak electrostatic coupling regime, surface charges are weakly screened and the conformations of a vesicle, with fixed spherical topology, depend on the charge-charge interaction on the surface. While in the strong coupling regime, condensation driven curvature induction plays a dominant role in determining the conformations of these surfaces. Condensation itself is observed to be dependent on the induced curvature, with larger induced curvatures favoring increased condensation. We show that both curvature generation and curvature sensing, induced by the interplay of electrostatics and curvature energy, contribute to determination of the vesicle configurations.
authors.affiliation: Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.
authors.forename: K K
authors.initials: KK
authors.lastname: Sreeja
authors.affiliation: Department of Physics and Chemistry, MEMPHYS-Center for Biomembrane Physics, University of Southern Denmark, Campusvej 55, DK-5230 Odense M, Denmark.
authors.forename: John H
authors.initials: JH
authors.lastname: Ipsen
authors.affiliation: Department of Physics, Indian Institute of Technology Madras, Chennai 600036, India.
authors.forename: P B
authors.initials: PB
authors.lastname: Sunil Kumar