Signature of the time-dependent hydrodynamic interactions on the collective diffusion in colloidal monolayers

TL;DR

This paper investigates how time-dependent hydrodynamic interactions influence the collective diffusion in colloidal monolayers, predicting new observable effects and discussing potential experimental detection methods.

Contribution

It extends previous models by incorporating time-dependent hydrodynamic interactions, revealing novel features in colloidal monolayer dynamics.

Findings

Predicted unique observational signatures of time-dependent hydrodynamics.

Discussed potential experimental detection strategies.

Extended understanding of diffusion divergence in colloidal systems.

Abstract

It has been shown recently that the coefficient of collective diffusion in a colloidal monolayer is divergent due to the hydrodynamic interactions mediated by the ambient fluid in bulk. The analysis is extended to allow for time--dependent hydrodynamic interactions. Novel observational features specific to this time dependency are predicted. The possible experimental detection in the dynamics of the monolayer is discussed.