Scagliarini, AndreaPagonabarraga Mora, Ignacio2021-02-052021-02-052020-08-071744-683Xhttps://hdl.handle.net/2445/173711Active 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.11 p.application/pdfengcc-by (c) Scagliarini, Andrea et al., 2020http://creativecommons.org/licenses/by/3.0/es/HidrodinàmicaFenòmens mesoscòpics (Física)HydrodynamicsMesoscopic phenomena (Physics)info:eu-repo/semantics/article7067232021-02-05info:eu-repo/semantics/openAccess