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  Exact Phoretic Interaction of Two Chemically Active Particles

Nasouri, B., & Golestanian, R. (2020). Exact Phoretic Interaction of Two Chemically Active Particles. Physical Review Letters, 124(16): 168003. doi:10.1103/PhysRevLett.124.168003.

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Item Permalink: http://hdl.handle.net/21.11116/0000-0006-96E2-1 Version Permalink: http://hdl.handle.net/21.11116/0000-0006-96E3-0
Genre: Journal Article

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 Creators:
Nasouri, Babak1, Author              
Golestanian, Ramin1, Author              
Affiliations:
1Department of Living Matter Physics, Max Planck Institute for Dynamics and Self-Organization, Max Planck Society, ou_2570692              

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 Abstract: We study the nonequilibrium interaction of two isotropic chemically active particles taking into account the exact near-field chemical interactions as well as hydrodynamic interactions. We identify regions in the parameter space wherein the dynamical system describing the two particles can have a fixed point—a phenomenon that cannot be captured under the far-field approximation. We find that, due to near-field effects, the particles may reach a stable equilibrium at a nonzero gap size or make a complex that can dissociate in the presence of sufficiently strong noise. We explicitly show that the near-field effects originate from a self-generated neighbor-reflected chemical gradient, similar to interactions of a self-propelling phoretic particle and a flat substrate.

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Language(s): eng - English
 Dates: 2020-04-222020-04-24
 Publication Status: Published in print
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 Table of Contents: -
 Rev. Method: Peer
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Title: Physical Review Letters
Source Genre: Journal
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Pages: 6 Volume / Issue: 124 (16) Sequence Number: 168003 Start / End Page: - Identifier: ISSN: 0031-9007
ISSN: 1079-7114