Shaping the gradients driving phoretic micro-swimmers: influence of swimming speed, budget of carbonic acid and environment
- Publication type:
- Journal article
- Metadata:
-
- Autoren
- Nadir Moeller
- Benno Liebchen
- Thomas Palberg
- Autoren-URL
- https://www.webofscience.com/api/gateway?GWVersion=2&SrcApp=fis-test-1&SrcAuth=WosAPI&KeyUT=WOS:000632762200002&DestLinkType=FullRecord&DestApp=WOS_CPL
- DOI
- 10.1140/epje/s10189-021-00026-9
- eISSN
- 1292-895X
- Externe Identifier
- Clarivate Analytics Document Solution ID: RC4GV
- PubMed Identifier: 33759011
- ISSN
- 1292-8941
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- EUROPEAN PHYSICAL JOURNAL E
- Artikelnummer
- ARTN 41
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Titel
- Shaping the gradients driving phoretic micro-swimmers: influence of swimming speed, budget of carbonic acid and environment
- Sub types
- Article
- Ausgabe der Zeitschrift
- 44
Data source: Web of Science (Lite)
- Other metadata sources:
-
- Abstract
- <jats:sec> <jats:title>Abstract</jats:title> <jats:p>pH gradient-driven modular micro-swimmers are investigated as a model for a large variety of quasi-two-dimensional chemi-phoretic self-propelled entities. Using three-channel micro-photometry, we obtain a precise large field mapping of pH at a spatial resolution of a few microns and a pH resolution of <jats:inline-formula><jats:alternatives><jats:tex-math>$$\sim 0.02~\hbox {pH}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:mrow> <mml:mo>∼</mml:mo> <mml:mn>0.02</mml:mn> <mml:mspace /> <mml:mtext>pH</mml:mtext> </mml:mrow> </mml:math></jats:alternatives></jats:inline-formula> units for swimmers of different velocities propelling on two differently charged substrates. We model our results in terms of solutions of the three-dimensional advection–diffusion equation for a 1:1 electrolyte, i.e. carbonic acid, which is produced by ion exchange and consumed by equilibration with dissolved <jats:inline-formula><jats:alternatives><jats:tex-math>$$\hbox {CO}_{2}$$</jats:tex-math><mml:math xmlns:mml="http://www.w3.org/1998/Math/MathML"> <mml:msub> <mml:mtext>CO</mml:mtext> <mml:mn>2</mml:mn> </mml:msub> </mml:math></jats:alternatives></jats:inline-formula>. We demonstrate the dependence of gradient shape and steepness on swimmer speed, diffusivity of chemicals, as well as the fuel budget. Moreover, we experimentally observe a subtle, but significant feedback of the swimmer’s immediate environment in terms of a substrate charge-mediated solvent convection. We discuss our findings in view of different recent results from other micro-fluidic or active matter investigations. We anticipate that they are relevant for quantitative modelling and targeted applications of diffusio-phoretic flows in general and artificial micro-swimmers in particular.</jats:p> </jats:sec><jats:sec> <jats:title>Graphic Abstract</jats:title> </jats:sec>
- Autoren
- Nadir Möller
- Benno Liebchen
- Thomas Palberg
- DOI
- 10.1140/epje/s10189-021-00026-9
- eISSN
- 1292-895X
- ISSN
- 1292-8941
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- The European Physical Journal E
- Sprache
- en
- Artikelnummer
- 41
- Online publication date
- 2021
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Herausgeber
- Springer Science and Business Media LLC
- Herausgeber URL
- http://dx.doi.org/10.1140/epje/s10189-021-00026-9
- Datum der Datenerfassung
- 2021
- Titel
- Shaping the gradients driving phoretic micro-swimmers: influence of swimming speed, budget of carbonic acid and environment
- Ausgabe der Zeitschrift
- 44
Data source: Crossref
- Abstract
- pH gradient-driven modular micro-swimmers are investigated as a model for a large variety of quasi-two-dimensional chemi-phoretic self-propelled entities. Using three-channel micro-photometry, we obtain a precise large field mapping of pH at a spatial resolution of a few microns and a pH resolution of [Formula: see text] units for swimmers of different velocities propelling on two differently charged substrates. We model our results in terms of solutions of the three-dimensional advection-diffusion equation for a 1:1 electrolyte, i.e. carbonic acid, which is produced by ion exchange and consumed by equilibration with dissolved [Formula: see text]. We demonstrate the dependence of gradient shape and steepness on swimmer speed, diffusivity of chemicals, as well as the fuel budget. Moreover, we experimentally observe a subtle, but significant feedback of the swimmer's immediate environment in terms of a substrate charge-mediated solvent convection. We discuss our findings in view of different recent results from other micro-fluidic or active matter investigations. We anticipate that they are relevant for quantitative modelling and targeted applications of diffusio-phoretic flows in general and artificial micro-swimmers in particular.
- Addresses
- Institute of Condensed Matter Physics, Johannes Gutenberg Universität, Staudinger Weg 7, 55128, Mainz, Germany. namoelle@uni-mainz.de.
- Autoren
- Nadir Möller
- Benno Liebchen
- Thomas Palberg
- DOI
- 10.1140/epje/s10189-021-00026-9
- eISSN
- 1292-895X
- Externe Identifier
- PubMed Identifier: 33759011
- PubMed Central ID: PMC7987694
- Funding acknowledgements
- Johannes Gutenberg-Universität Mainz:
- Open access
- true
- ISSN
- 1292-8941
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- The European physical journal. E, Soft matter
- Schlüsselwörter
- Carbonic Acid
- Environment
- Movement
- Swimming
- Hydrogen-Ion Concentration
- Sprache
- eng
- Medium
- Electronic
- Online publication date
- 2021
- Open access status
- Open Access
- Paginierung
- 41
- Datum der Veröffentlichung
- 2021
- Status
- Published
- Publisher licence
- CC BY
- Datum der Datenerfassung
- 2021
- Titel
- Shaping the gradients driving phoretic micro-swimmers: influence of swimming speed, budget of carbonic acid and environment.
- Sub types
- research-article
- Journal Article
- Ausgabe der Zeitschrift
- 44
Files
https://link.springer.com/content/pdf/10.1140/epje/s10189-021-00026-9.pdf https://europepmc.org/articles/PMC7987694?pdf=render
Data source: Europe PubMed Central
- Abstract
- pH gradient-driven modular micro-swimmers are investigated as a model for a large variety of quasi-two-dimensional chemi-phoretic self-propelled entities. Using three-channel micro-photometry, we obtain a precise large field mapping of pH at a spatial resolution of a few microns and a pH resolution of [Formula: see text] units for swimmers of different velocities propelling on two differently charged substrates. We model our results in terms of solutions of the three-dimensional advection-diffusion equation for a 1:1 electrolyte, i.e. carbonic acid, which is produced by ion exchange and consumed by equilibration with dissolved [Formula: see text]. We demonstrate the dependence of gradient shape and steepness on swimmer speed, diffusivity of chemicals, as well as the fuel budget. Moreover, we experimentally observe a subtle, but significant feedback of the swimmer's immediate environment in terms of a substrate charge-mediated solvent convection. We discuss our findings in view of different recent results from other micro-fluidic or active matter investigations. We anticipate that they are relevant for quantitative modelling and targeted applications of diffusio-phoretic flows in general and artificial micro-swimmers in particular.
- Date of acceptance
- 2021
- Autoren
- Nadir Möller
- Benno Liebchen
- Thomas Palberg
- Autoren-URL
- https://www.ncbi.nlm.nih.gov/pubmed/33759011
- DOI
- 10.1140/epje/s10189-021-00026-9
- eISSN
- 1292-895X
- Externe Identifier
- PubMed Central ID: PMC7987694
- Ausgabe der Veröffentlichung
- 3
- Zeitschrift
- Eur Phys J E Soft Matter
- Schlüsselwörter
- Carbonic Acid
- Environment
- Hydrogen-Ion Concentration
- Movement
- Swimming
- Sprache
- eng
- Country
- France
- Paginierung
- 41
- PII
- 10.1140/epje/s10189-021-00026-9
- Datum der Veröffentlichung
- 2021
- Status
- Published online
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2021
- Titel
- Shaping the gradients driving phoretic micro-swimmers: influence of swimming speed, budget of carbonic acid and environment.
- Sub types
- Journal Article
- Ausgabe der Zeitschrift
- 44
Data source: PubMed
- Author's licence
- CC-BY
- Autoren
- Nadir Möller
- Benno Liebchen
- Thomas Palberg
- Hosting institution
- Universitätsbibliothek Mainz
- Sammlungen
- JGU-Publikationen
- Resource version
- Published version
- DOI
- 10.1140/epje/s10189-021-00026-9
- File(s) embargoed
- false
- Open access
- true
- ISSN
- 1292-895X
- Zeitschrift
- The European physical journal : E, Soft matter
- Schlüsselwörter
- 530 Physik
- 530 Physics
- Sprache
- eng
- Open access status
- Open Access
- Paginierung
- 41
- Datum der Veröffentlichung
- 2021
- Public URL
- https://openscience.ub.uni-mainz.de/handle/20.500.12030/7299
- Herausgeber
- Springer
- Datum der Datenerfassung
- 2022
- Datum, an dem der Datensatz öffentlich gemacht wurde
- 2022
- Zugang
- Public
- Titel
- Shaping the gradients driving phoretic micro-swimmers : influence of swimming speed, budget of carbonic acid and environment
- Ausgabe der Zeitschrift
- 44
Files
shaping_the_gradients_driving-20220701131905659.pdf
Data source: OPENSCIENCE.UB
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