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      Modeling Active Colloids: From Active Brownian Particles to Hydrodynamic and Chemical Fields

      1 , 2
      Annual Review of Condensed Matter Physics
      Annual Reviews

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          Abstract

          Active colloids are self-propelled particles moving in viscous fluids by consuming fuel from their surroundings. Here, we review the numerical and theoretical modeling of active colloids propelled by self-generated near-surface flows. We start with the generic model of an active Brownian particle taking into account potential forces and effective pairwise interaction, which include hydrodynamic and phoretic interactions. Also, the squirmer as a model microswimmer is introduced. We then discuss the explicit modeling of self-generated fluid flow and the full hydrodynamic-chemical coupling. Finally, we discuss recent advances in selected topics in which modeling of active colloids is used to study motion in crowded and complex environments, microrheology in active baths, active colloidal engines, adaptive responses of active colloids with the help of machine learning techniques, as well as effects of colloid and fluid inertia.

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          Hydrodynamics of soft active matter

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            Colloid Transport by Interfacial Forces

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              Active Particles in Complex and Crowded Environments

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                Author and article information

                Journal
                Annual Review of Condensed Matter Physics
                Annu. Rev. Condens. Matter Phys.
                Annual Reviews
                1947-5454
                1947-5462
                March 10 2023
                March 10 2023
                : 14
                : 1
                : 109-127
                Affiliations
                [1 ]Faculty of Physics, University of Vienna, Vienna, Austria;
                [2 ]Institute for Theoretical Physics, TU Berlin, Berlin, Germany;
                Article
                10.1146/annurev-conmatphys-040821-115500
                df47018b-8b6b-4387-a24d-24eb80b83382
                © 2023

                http://creativecommons.org/licenses/by/4.0/

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