title: Interaction of Charged Colloidal Particles at the Air-Water Interface.
abstract: We study, using Monte Carlo simulations, the interaction between charged colloidal particles confined to the air-water interface. The dependence of force on ionic strength and counterion valence is explored. For 1:1 electrolyte, we find that the electrostatic interaction at the interface is very close to the one observed in the bulk. On the other hand, for salts with multivalent counterions, an interface produces an enhanced attraction between like charged colloids. Finally, we explore the effect of induced surface charge at the air-water interface on the interaction between colloidal particles.
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul , Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil.
authors.forename: Matheus
authors.initials: M
authors.lastname: Girotto
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul , Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil.
authors.forename: Alexandre P
authors.initials: AP
authors.lastname: Dos Santos
authors.affiliation: Instituto de Física, Universidade Federal do Rio Grande do Sul , Caixa Postal 15051, CEP 91501-970, Porto Alegre, RS, Brazil.
authors.forename: Yan
authors.initials: Y
authors.lastname: Levin