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Title: | Unravelling the role of phoretic and hydrodynamic interactions in active colloidal suspensions |
Author: | Scagliarini, Andrea Pagonabarraga Mora, Ignacio |
Keywords: | Hidrodinàmica Fenòmens mesoscòpics (Física) Hydrodynamics Mesoscopic phenomena (Physics) |
Issue Date: | 7-Aug-2020 |
Publisher: | Royal Society of Chemistry |
Abstract: | Active fluids comprise a variety of systems composed of elements immersed in a fluid environment which can convert some form of energy into directed motion; as such they are intrinsically out-of-equilibrium in the absence of any external force. A fundamental problem in the physics of active matter concerns the understanding of how the characteristics of autonomous propulsion and agent-agent interactions determine the collective dynamics of the system. We study numerically the suspensions of self-propelled diffusiophoretic colloids, in (quasi)-2d configurations, accounting for both dynamically resolved solute-mediated phoretic interactions and solvent-mediated hydrodynamic interactions. Our results show that the system displays different scenarios at changing the colloid-solute affinity and it develops a cluster phase in the chemoattractive case. We study the statistics of cluster sizes and cluster morphologies for different magnitudes of colloidal activity. Finally, we provide evidences that hydrodynamics plays a relevant role in the aggregation kinetics and cluster morphology, significantly hindering cluster growth. |
Note: | Reproducció del document publicat a: https://doi.org/10.1039/C8SM01831F |
It is part of: | Soft Matter, 2020, num. 16, p. 8893-8903 |
URI: | https://hdl.handle.net/2445/173711 |
Related resource: | https://doi.org/10.1039/C8SM01831F |
ISSN: | 1744-683X |
Appears in Collections: | Articles publicats en revistes (Física de la Matèria Condensada) |
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