Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction

To explore the generic features of synchronisation facilitated by hydrodynamic interactions dominated by viscous forces, we investigate small systems of rowers; rowers are a highly simplified model for motile cilia, with each cilium approximated by a rigid sphere driven by a geometrically updated fo...

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Main Authors: E Hamilton, P Cicuta
Format: Article
Language:English
Published: IOP Publishing 2018-01-01
Series:New Journal of Physics
Subjects:
Online Access:https://doi.org/10.1088/1367-2630/aae103
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author E Hamilton
P Cicuta
author_facet E Hamilton
P Cicuta
author_sort E Hamilton
collection DOAJ
description To explore the generic features of synchronisation facilitated by hydrodynamic interactions dominated by viscous forces, we investigate small systems of rowers; rowers are a highly simplified model for motile cilia, with each cilium approximated by a rigid sphere driven by a geometrically updated force. We introduce a new framework to analyse rowers, in which we average the pair-wise interaction of rowers by converting to the natural phase. In doing so the function describing the interaction becomes continuous, dramatically simplifying the system and allowing standard dynamical system techniques to be applied. Through inspection of phase portraits, we capture the broad features of rowers driven by power law forces and quantify their coupling strength. This approach is not limited to power law potentials, and can be applied to any monotonically increasing function. When implemented in systems with more rowers, the phase portraits show more diverse behaviour. By exploring the phase space, small systems of rowers can be designed to demonstrate specific features.
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spelling doaj.art-46db74a5cb61486799b45daa7185c4e72023-08-08T14:54:44ZengIOP PublishingNew Journal of Physics1367-26302018-01-0120909302810.1088/1367-2630/aae103Interpreting the synchronisation of driven colloidal oscillators via the mean pair interactionE Hamilton0https://orcid.org/0000-0002-8341-0894P Cicuta1https://orcid.org/0000-0002-9193-8496Cavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United KingdomCavendish Laboratory, University of Cambridge , Cambridge, CB3 0HE, United KingdomTo explore the generic features of synchronisation facilitated by hydrodynamic interactions dominated by viscous forces, we investigate small systems of rowers; rowers are a highly simplified model for motile cilia, with each cilium approximated by a rigid sphere driven by a geometrically updated force. We introduce a new framework to analyse rowers, in which we average the pair-wise interaction of rowers by converting to the natural phase. In doing so the function describing the interaction becomes continuous, dramatically simplifying the system and allowing standard dynamical system techniques to be applied. Through inspection of phase portraits, we capture the broad features of rowers driven by power law forces and quantify their coupling strength. This approach is not limited to power law potentials, and can be applied to any monotonically increasing function. When implemented in systems with more rowers, the phase portraits show more diverse behaviour. By exploring the phase space, small systems of rowers can be designed to demonstrate specific features.https://doi.org/10.1088/1367-2630/aae103synchronizationmetachronal wavesmotile cilianonlinear dynamical system
spellingShingle E Hamilton
P Cicuta
Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
New Journal of Physics
synchronization
metachronal waves
motile cilia
nonlinear dynamical system
title Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
title_full Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
title_fullStr Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
title_full_unstemmed Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
title_short Interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
title_sort interpreting the synchronisation of driven colloidal oscillators via the mean pair interaction
topic synchronization
metachronal waves
motile cilia
nonlinear dynamical system
url https://doi.org/10.1088/1367-2630/aae103
work_keys_str_mv AT ehamilton interpretingthesynchronisationofdrivencolloidaloscillatorsviathemeanpairinteraction
AT pcicuta interpretingthesynchronisationofdrivencolloidaloscillatorsviathemeanpairinteraction