title: Transition from diffusive to subdiffusive motion in colloidal liquids.
abstract: In this work we report experimental and theoretical results for the motion of single colloidal particles embedded in complex fluids with different interparticle interactions. The motion of particles is found to follow a similar behavior for the different systems. In particular, the transition from the short-time diffusive motion to the subdiffusive intermediate-time motion is found to occur when the square root of its mean squared displacement is in the order of 1 tenth of the neighbors' interparticle distance, thus following a quantitative criterion similar to Lindemann's criterion for melting.
authors.affiliation: Instituto de Física "Manuel Sandoval Vallarta", Universidad Autónoma de San Luis Potosí, Alvaro Obregón 64, 78000 San Luis Potosí, S.L.P., Mexico. arauz@ifisica.uaslp.mx.
authors.forename: M J
authors.initials: MJ
authors.lastname: Sánchez-Miranda
authors.forename: B
authors.initials: B
authors.lastname: Bonilla-Capilla
authors.forename: E
authors.initials: E
authors.lastname: Sarmiento-Gómez
authors.forename: E
authors.initials: E
authors.lastname: Lázaro-Lázaro
authors.forename: A
authors.initials: A
authors.lastname: Ramírez-Saito
authors.forename: M
authors.initials: M
authors.lastname: Medina-Noyola
authors.forename: J L
authors.initials: JL
authors.lastname: Arauz-Lara