English   español  
Por favor, use este identificador para citar o enlazar a este item: http://hdl.handle.net/10261/8447
Compartir / Impacto:
Estadísticas
Add this article to your Mendeley library MendeleyBASE
Citado 55 veces en Web of Knowledge®  |  Ver citas en Google académico
Visualizar otros formatos: MARC | Dublin Core | RDF | ORE | MODS | METS | DIDL
Título

Origin of the Short-Range, Strong Repulsive Force between Ionic Surfactant Layers

AutorFaraudo, Jordi; Bresme, Fernando
Palabras claveSurfactants
Molecular dynamics method
Water
Electrostatics
Liquid films
Solvation
Interface phenomena
Fecha de publicación23-feb-2005
EditorAmerican Physical Society
CitaciónPhys. Rev. Lett. 94(7): 077802 (2005)
ResumenWe study the electrostatic interaction between two ionic surfactant layers by performing molecular dynamic simulations of salt-free thin water films coated by surfactants (Newton black films). We find a strong exponentially decaying short-range repulsion not explained by classical Poisson-Boltzmann theory. This electrostatic force is shown to be mainly due to the anomalous dielectric response of water near charged surfactant layers. This result clarifies the much debated physical mechanism underlying the controversial "hydration forces" observed in experiments. In the case of ionic thin films, the "hydration forces" can be identified with the electrostatic forces induced by the layers of highly polarized water originated at the interfaces.
Descripción4 pages, 3 figures.-- PACS nrs.: 68.15.+e, 02.70.Ns, 68.05.Cf, 82.45.Mp.
Versión del editorhttp://dx.doi.org/10.1103/PhysRevLett.94.077802
URIhttp://hdl.handle.net/10261/8447
DOI10.1103/PhysRevLett.94.077802
ISSN0031-9007
Aparece en las colecciones: (ICMAB) Artículos
Ficheros en este ítem:
Fichero Descripción Tamaño Formato  
Ionic_Surfactant_Layers.pdf169,85 kBAdobe PDFVista previa
Visualizar/Abrir
Mostrar el registro completo
 



NOTA: Los ítems de Digital.CSIC están protegidos por copyright, con todos los derechos reservados, a menos que se indique lo contrario.