Conference Presentation (Plenary/Keynote)

FZJ-2023-02912

http://join2-wiki.gsi.de/foswiki/pub/Main/Artwork/join2_logo100x88.png Motility-Induced Inter-Particle Correlations and Mass Transport

Dhont, J. K. G. (Corresponding author)FZJ* ; Briels, W.FZJ* ; Park, G.FZJ*

2023

Abstract: Amongst the various theoretical approaches towards dynamics and phase behaviour of suspensions of active Brownian particles (ABPs), no attempt has been made to specify motility-induced inter-particle correlations, starting from microscopic considerations. In this presentation, a particle-based derivation of explicit expressions for the pair-correlation function for ABPs for small and large swimming velocities and low concentrations is derived. This allows to obtain a generalization of Fick’s law for the colloid concentration that includes self-propulsion. It will be shown that there is a concentration-gradient induced preferred swimming direction, due to inter-particle correlations, which tends to stabilize the system against spinodal phase separation. J.K.G. Dhont, G.W. Park, W.J. Briels, Soft Matter 17 (2021) 5613

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Contributing Institute(s):

1. Biomakromolekulare Systeme und Prozesse (IBI-4)

Research Program(s):

1. 5243 - Information Processing in Distributed Systems (POF4-524) (POF4-524)

Appears in the scientific report 2023

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