Active particles under confinement: aggregation at the wall and gradient formation inside a channel

I study the confinement-induced aggregation phenomenon in a minimal model of self-propelled particles inside a channel. Starting from first principles, I derive a set of equations that govern the density profile of such a system at the steady-state, and calculate analytically how the aggregation at...

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Bibliographic Details
Published inNew journal of physics Vol. 15; no. 5; pp. 55007 - 11
Main Author Lee, Chiu Fan
Format Journal Article
LanguageEnglish
Published IOP Publishing 15.05.2013
Subjects
Agglomeration
Channels
Density
Mathematical analysis
Mathematical models
Particles (of physics)
Physical properties
Walls
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Summary:I study the confinement-induced aggregation phenomenon in a minimal model of self-propelled particles inside a channel. Starting from first principles, I derive a set of equations that govern the density profile of such a system at the steady-state, and calculate analytically how the aggregation at the walls varies with the physical parameters of the system. I also investigate how the gradient of the particle density varies if the inside of the channel is partitioned into two regions within which the active particles exhibit distinct levels of fluctuations in their directions of travel.
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ISSN:1367-2630
1367-2630
DOI:10.1088/1367-2630/15/5/055007