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Ydan Ben Dor on Muck Rack

Ydan Ben Dor

As seen in: Physical Review B
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Articles

Passive objects in confined active fluids: A localization transition

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By Ydan Ben Dor, Yariv Kafri, Mehran Kardar, Julien Tailleur
| Physical Review B
Abstract We study how walls confining active fluids interact with asymmetric passive objects placed in their bulk. We show that the objects experience nonconservative long-ranged forces mediated by the active bath. To leading order, these forces can be computed using a generalized image theorem. The walls repel asymmetric objects, irrespective of their microscopic properties or their orientations.
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Disordered boundaries destroy bulk phase separation in scalar active matter

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By Yariv Kafri, Mehran Kardar, Ydan Ben Dor, Sunghan Ro
| Physical Review B
Abstract We show that disordered boundaries destroy bulk phase separation in scalar active systems in dimension d<dc=3. This is in strong contrast with the equilibrium case where boundaries have no impact on the bulk of phase-separated systems. The underlying mechanism is revealed by considering a localized deformation of an otherwise flat wall, from which the case of a disordered boundary can be inferred.
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