Antiswarming: Structure and dynamics of repulsive chemically active particles
- Creators
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Yan, Wen
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Brady, John F.
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.
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.Attached Files
Published - PhysRevE.96.060601.pdf
Submitted - 1711.01446.pdf
Supplemental Material - SinkFreezeP864B30Da2SDnew90Gamma220_small.mp4
Supplemental Material - SinkMeltP686B35Da5SDnew84Gamma110_small.mp4
Files
Additional details
- Alternative title
- Anti-Swarming: Structure and Dynamics of Repulsive Chemically Active Particles
- Eprint ID
- 83621
- Resolver ID
- CaltechAUTHORS:20171201-095649069
- NSF
- CBET-1437570
- Created
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2017-12-01Created from EPrint's datestamp field
- Updated
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2021-11-15Created from EPrint's last_modified field