Enhancement of swimmer diffusion through regular kicks: analytic mapping of a scale-independent parameter space
View/Open
Main Text (1,480Mb) (Restricted access)
Request copy
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Supplementary Information (758,4Kb) (Restricted access)
Request copy
Què és aquest botó?
Aquest botó permet demanar una còpia d'un document restringit a l'autor. Es mostra quan:
- Disposem del correu electrònic de l'autor
- El document té una mida inferior a 20 Mb
- Es tracta d'un document d'accés restringit per decisió de l'autor o d'un document d'accés restringit per política de l'editorial
Cita com:
hdl:2117/413909
Document typeArticle
Defense date2024-06-21
PublisherInstitute of Physics (IOP)
Rights accessRestricted access - publisher's policy
(embargoed until 2025-06-21)
Except where otherwise noted, content on this work
is licensed under a Creative Commons license
:
Attribution-NonCommercial-NoDerivs 4.0 International
Abstract
Depending on their mechanism of self-propulsion, active particles can exhibit time-dependent, often periodic, propulsion velocity. The precise propulsion velocity profile determines their mean square displacement and their effective diffusion coefficient at long times. Here, we demonstrate that any periodic propulsion profile results in a larger diffusion coefficient than the corresponding case with constant propulsion velocity. We investigate, in detail, periodic exponentially decaying velocity pulses, expected in propulsion mechanisms based on sudden absorption of finite amounts of energy. We show, both analytically and with numerical simulations, that in these cases the effective diffusion coefficient can be arbitrarily enhanced with respect to the case with constant velocity equal to the average speed. Our results may help interpret, in a new light observations on the diffusion enhancement of active particles.
CitationJurado Romero, A.; Calero, C.; Rey, R. Enhancement of swimmer diffusion through regular kicks: analytic mapping of a scale-independent parameter space. "Journal of statistical mechanics", 21 Juny 2024, vol. 2024, núm. 6, article 063201.
ISSN1742-5468
Publisher versionhttps://iopscience.iop.org/article/10.1088/1742-5468/ad4024
Collections
Files | Description | Size | Format | View |
---|---|---|---|---|
Rev_1_Analytic_Diffusion_Paper.pdf | Main Text | 1,480Mb | Restricted access | |
Rev_1_SI_Analytic_Diffusion_Paper.pdf | Supplementary Information | 758,4Kb | Restricted access |