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Antiswarming: Structure and dynamics of repulsive chemically active particles

Yan, Wen and Brady, John F. (2017) Antiswarming: Structure and dynamics of repulsive chemically active particles. Physical Review E, 96 (6). Art. No. 060601. ISSN 2470-0045. https://resolver.caltech.edu/CaltechAUTHORS:20171201-095649069

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Abstract

Chemically active Brownian particles with surface catalytic reactions may repel each other due to diffusiophoretic interactions in the reaction and product concentration fields. The system behavior can be described by a “chemical” coupling parameter Γ_c that compares the strength of diffusiophoretic repulsion to Brownian motion, and by a mapping to the classical electrostatic one component plasma (OCP) system. When confined to a constant-volume domain, body-centered cubic (bcc) crystals spontaneously form from random initial configurations when the repulsion is strong enough to overcome Brownian motion. Face-centered cubic (fcc) crystals may also be stable. The “melting point” of the “liquid-to-crystal transition” occurs at Γ_c ≈ 140 for both bcc and fcc lattices.


Item Type:Article
Related URLs:
URLURL TypeDescription
https://doi.org/10.1103/PhysRevE.96.060601DOIArticle
https://journals.aps.org/pre/abstract/10.1103/PhysRevE.96.060601PublisherArticle
https://arxiv.org/abs/1711.01446arXivDiscussion Paper
Alternate Title:Anti-Swarming: Structure and Dynamics of Repulsive Chemically Active Particles
Additional Information:© 2017 American Physical Society. Received 19 August 2017; published 1 December 2017. We thank Professor Z.-G. Wang for bringing our attention to the repulsive system. This work is supported by NSF CBET-1437570.
Funders:
Funding AgencyGrant Number
NSFCBET-1437570
Issue or Number:6
Record Number:CaltechAUTHORS:20171201-095649069
Persistent URL:https://resolver.caltech.edu/CaltechAUTHORS:20171201-095649069
Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83621
Collection:CaltechAUTHORS
Deposited By: Tony Diaz
Deposited On:01 Dec 2017 18:13
Last Modified:03 Oct 2019 19:08

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