Effect of confinement on the interaction between two like-charged rods.
Monte Carlo simulations were employed to study two charged rods confined between two unlike charged plates, all immersed in a model electrolyte. Recently, it was shown that two rods immersed in a multivalent counterion solution may show attraction [Phys. Rev. Lett. 78, 2477 (1997)10.1103/PhysRevLett.78.2477]. Here we show for a monovalent electrolyte that rod-rod attraction and repulsion can switch sign depending on confinement and ionic size. We also propose a simple self-assembling mechanism which may be helpful to understand the DNA-lipid bilayers complexation.
Odriozola
G
G
Programa de Ingeniería Molecular, Instituto Mexicano del Petróleo, Lázaro Cárdenas 152, 07730 Mexico, D. F., Mexico.
Jiménez-Angeles
F
F
Lozada-Cassou
M
M
D003102:Colloids / Q000737:chemistry*; D003198:Computer Simulation; D004247:DNA / Q000737:chemistry* / Q000648:ultrastructure; D008956:Models, Chemical; D008958:Models, Molecular; D055672:Static Electricity; D013314:Stress, Mechanical
D003102:Colloids; D004247:DNA