Work

Inhomogeneous diffusion in confined colloidal suspensions

Year: 2025

Type: article

Abstract: , 4699-4714]. Here we investigate many facets of the dynamical properties of the system, such as confined and inhomogeneous diffusion, mean first-passage times and generalized incoherent scattering functions. We observe that the experiment features strong footprints of the confinement in the dynamical properties, such as inhomogeneous diffusion coefficients and non-zero off-diagonal elements in the incoherent scattering function which we can quantitatively model and analyze with computer simulations. This allows us, for example, to systematically investigate the impact of surface roughness. Our comparative study therefore advances the fundamental understanding of the impact of confinement on dynamics in fluids and colloidal suspensions.

Source: Soft Matter

DOI: 10.1039/d5sm00120j

Authors: Gerhard Jung, Alejandro Villada-Balbuena, Thomas Franosch

Institutions: Laboratoire Interdisciplinaire de Physique, Université Grenoble Alpes, Heinrich Heine University Düsseldorf, Universität Innsbruck

Language: English

Topic: Material Dynamics and Properties

Subfield: Materials Chemistry

Field: Materials Science

Domain: Physical Sciences

Open Access status: hybrid

Funders: Austrian Science Fund, Consejo Nacional de Ciencia y Tecnología

Awards: G3176917266, G5423074573