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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. doi:10.1103/PhysRevE.96.060601.

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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
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URLURL TypeDescription Paper
Yan, Wen0000-0002-9189-0840
Brady, John F.0000-0001-5817-9128
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.
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Issue or Number:6
Record Number:CaltechAUTHORS:20171201-095649069
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Usage Policy:No commercial reproduction, distribution, display or performance rights in this work are provided.
ID Code:83621
Deposited By: Tony Diaz
Deposited On:01 Dec 2017 18:13
Last Modified:15 Nov 2021 20:12

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