RT Journal Article
T1 Nanocapillarity and the liquid bridge mediated force between colloidal nanoparticles
A1 MacDowell, Luis G.
A1 Llombart, Pablo
A1 Benet, Jorge
A1 Palanco, Jose
A1 Guerrero Martínez, Andrés
AB In this work we probe the concept of interface tension for ultra thin adsorbed liquid films in the nanoscale by studying the surface fluctuations of films down to the monolayer.  Our results show that the spectrum of film height fluctuations of a liquid-vapor surface may be extended to ultra thin films provided we take into account the interactions of the substrate with the surface. Global fluctuations of film height are described in terms of the disjoining pressure, while surface deformations that are proportional to the interface area are accounted for by a film thick dependent surface tension.  As a prove of concept, we model the capillary forces between colloidal nanoparticles held together by liquid bridges. Our results indicate that the classical equations for capillarity follow very precisely down to the nanoscale, provided we account for the film height dependence of the surface tension.
PB ACS
SN 2470-1343
YR 2018
FD 2018-01-05
LK https://hdl.handle.net/20.500.14352/13517
UL https://hdl.handle.net/20.500.14352/13517
LA eng
NO Ministerio de Economia y Competitividad (MINECO)
NO Ministerio de Educación, Cultura y Deporte, Programa Salvador de Madariaga
DS Docta Complutense
RD 2 sept 2024