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Si us plau utilitzeu sempre aquest identificador per citar o enllaçar aquest document: https://hdl.handle.net/2445/173711
Unravelling the role of phoretic and hydrodynamic interactions in active colloidal suspensions
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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.
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SCAGLIARINI, Andrea, PAGONABARRAGA MORA, Ignacio. Unravelling the role of phoretic and hydrodynamic interactions in active colloidal suspensions. _Soft Matter_. 2020. Vol. 16, núm. 8893-8903. [consulta: 14 de gener de 2026]. ISSN: 1744-683X. [Disponible a: https://hdl.handle.net/2445/173711]