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Elastohydrodynamics of three-dimensional chemically active filaments.

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Title: Elastohydrodynamics of three-dimensional chemically active filaments.
Authors: Butler, Matthew D.1,2 matthew.butler@strath.ac.uk, Walker, Benjamin J.1, Montenegro-Johnson, Thomas D.3, Katsamba, Panayiota4,5 panayiota.katsamba@cut.ac.cy
Source: Journal of Fluid Mechanics. 2/25/2026, Vol. 1029, p1-30. 30p.
Subjects: Elastohydrodynamics, Mechanical buckling, Fibers, Three-dimensional flow, Viscous flow
Abstract: Active deformable filaments exhibit a large range of qualitatively different threedimensional dynamics, depending on their flexibility, the strength and nature of the active forcing, and the surrounding environment. We investigate the dynamic behaviour of elastic, chemically propelled phoretic filaments, combining two existing models; a local version of slender phoretic theory, which determines the resulting slip flows for chemically propelled filaments with a given shape and chemical patterning, is paired with a computationally efficient method for capturing the elastohydrodynamics of a deformable filament in viscous flow to study the chemoelastohydrodynamics of filaments. As the activity increases, or equivalently the filament stiffness decreases, these filaments undergo buckling instabilities that alter their behaviour from rigid rods. We follow their behaviour well beyond the buckling threshold to find a rich array of dynamics. Through two illustrative examples, we conduct initial-value simulations that show that as the stiffness of the filament is decreased, the dynamic behaviour moves from rigid motion to planar buckling, through an out-of-plane transition, eventually reaching diffusive-like behaviours for very deformable filaments. [ABSTRACT FROM AUTHOR]
Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract. (Copyright applies to all Abstracts.)
Database: Engineering Source
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DbLabel: Engineering Source
An: 192858516
AccessLevel: 6
PubType: Academic Journal
PubTypeId: academicJournal
PreciseRelevancyScore: 0
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  Data: Elastohydrodynamics of three-dimensional chemically active filaments.
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  Data: <searchLink fieldCode="AR" term="%22Butler%2C+Matthew+D%2E%22">Butler, Matthew D.</searchLink><relatesTo>1,2</relatesTo><i> matthew.butler@strath.ac.uk</i><br /><searchLink fieldCode="AR" term="%22Walker%2C+Benjamin+J%2E%22">Walker, Benjamin J.</searchLink><relatesTo>1</relatesTo><br /><searchLink fieldCode="AR" term="%22Montenegro-Johnson%2C+Thomas+D%2E%22">Montenegro-Johnson, Thomas D.</searchLink><relatesTo>3</relatesTo><br /><searchLink fieldCode="AR" term="%22Katsamba%2C+Panayiota%22">Katsamba, Panayiota</searchLink><relatesTo>4,5</relatesTo><i> panayiota.katsamba@cut.ac.cy</i>
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  Data: <searchLink fieldCode="JN" term="%22Journal+of+Fluid+Mechanics%22">Journal of Fluid Mechanics</searchLink>. 2/25/2026, Vol. 1029, p1-30. 30p.
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  Data: <searchLink fieldCode="DE" term="%22Elastohydrodynamics%22">Elastohydrodynamics</searchLink><br /><searchLink fieldCode="DE" term="%22Mechanical+buckling%22">Mechanical buckling</searchLink><br /><searchLink fieldCode="DE" term="%22Fibers%22">Fibers</searchLink><br /><searchLink fieldCode="DE" term="%22Three-dimensional+flow%22">Three-dimensional flow</searchLink><br /><searchLink fieldCode="DE" term="%22Viscous+flow%22">Viscous flow</searchLink>
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  Data: Active deformable filaments exhibit a large range of qualitatively different threedimensional dynamics, depending on their flexibility, the strength and nature of the active forcing, and the surrounding environment. We investigate the dynamic behaviour of elastic, chemically propelled phoretic filaments, combining two existing models; a local version of slender phoretic theory, which determines the resulting slip flows for chemically propelled filaments with a given shape and chemical patterning, is paired with a computationally efficient method for capturing the elastohydrodynamics of a deformable filament in viscous flow to study the chemoelastohydrodynamics of filaments. As the activity increases, or equivalently the filament stiffness decreases, these filaments undergo buckling instabilities that alter their behaviour from rigid rods. We follow their behaviour well beyond the buckling threshold to find a rich array of dynamics. Through two illustrative examples, we conduct initial-value simulations that show that as the stiffness of the filament is decreased, the dynamic behaviour moves from rigid motion to planar buckling, through an out-of-plane transition, eventually reaching diffusive-like behaviours for very deformable filaments. [ABSTRACT FROM AUTHOR]
– Name: AbstractSuppliedCopyright
  Label:
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  Data: <i>Copyright of Journal of Fluid Mechanics is the property of Cambridge University Press and its content may not be copied or emailed to multiple sites without the copyright holder's express written permission. Additionally, content may not be used with any artificial intelligence tools or machine learning technologies. However, users may print, download, or email articles for individual use. This abstract may be abridged. No warranty is given about the accuracy of the copy. Users should refer to the original published version of the material for the full abstract.</i> (Copyright applies to all Abstracts.)
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RecordInfo BibRecord:
  BibEntity:
    Identifiers:
      – Type: doi
        Value: 10.1017/jfm.2026.11208
    Languages:
      – Code: eng
        Text: English
    PhysicalDescription:
      Pagination:
        PageCount: 30
        StartPage: 1
    Subjects:
      – SubjectFull: Elastohydrodynamics
        Type: general
      – SubjectFull: Mechanical buckling
        Type: general
      – SubjectFull: Fibers
        Type: general
      – SubjectFull: Three-dimensional flow
        Type: general
      – SubjectFull: Viscous flow
        Type: general
    Titles:
      – TitleFull: Elastohydrodynamics of three-dimensional chemically active filaments.
        Type: main
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      – PersonEntity:
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            NameFull: Butler, Matthew D.
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            NameFull: Walker, Benjamin J.
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            NameFull: Montenegro-Johnson, Thomas D.
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            NameFull: Katsamba, Panayiota
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          Dates:
            – D: 25
              M: 02
              Text: 2/25/2026
              Type: published
              Y: 2026
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              Value: 00221120
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              Value: 1029
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            – TitleFull: Journal of Fluid Mechanics
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