Cargando…
Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface
Efficient exploration of space is a paramount motive for active colloids in practical applications. Yet, introducing activity may lead to surface-bound states, hindering efficient space exploration. Here, we show that the interplay between self-motility and fuel-dependent affinity for surfaces affec...
Autores principales: | , , , |
---|---|
Formato: | Online Artículo Texto |
Lenguaje: | English |
Publicado: |
The Royal Society of Chemistry
2023
|
Materias: | |
Acceso en línea: | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10663988/ https://www.ncbi.nlm.nih.gov/pubmed/37946586 http://dx.doi.org/10.1039/d3sm01079a |
_version_ | 1785138521774751744 |
---|---|
author | van Baalen, Carolina Uspal, William E. Popescu, Mihail N. Isa, Lucio |
author_facet | van Baalen, Carolina Uspal, William E. Popescu, Mihail N. Isa, Lucio |
author_sort | van Baalen, Carolina |
collection | PubMed |
description | Efficient exploration of space is a paramount motive for active colloids in practical applications. Yet, introducing activity may lead to surface-bound states, hindering efficient space exploration. Here, we show that the interplay between self-motility and fuel-dependent affinity for surfaces affects how efficiently catalytically-active Janus microswimmers explore both liquid–solid and liquid–fluid interfaces decorated with arrays of similarly-sized obstacles. In a regime of constant velocity vs. fuel concentration, we find that microswimmer–obstacle interactions strongly depend on fuel concentration, leading to a counter-intuitive decrease in space exploration efficiency with increased available fuel for all interfaces. Using experiments and theoretical predictions, we attribute this phenomenon to a largely overlooked change in the surface properties of the microswimmers' catalytic cap upon H(2)O(2) exposure. Our findings have implications in the interpretation of experimental studies of catalytically active colloids, as well as in providing new handles to control their dynamics in complex environments. |
format | Online Article Text |
id | pubmed-10663988 |
institution | National Center for Biotechnology Information |
language | English |
publishDate | 2023 |
publisher | The Royal Society of Chemistry |
record_format | MEDLINE/PubMed |
spelling | pubmed-106639882023-10-27 Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface van Baalen, Carolina Uspal, William E. Popescu, Mihail N. Isa, Lucio Soft Matter Chemistry Efficient exploration of space is a paramount motive for active colloids in practical applications. Yet, introducing activity may lead to surface-bound states, hindering efficient space exploration. Here, we show that the interplay between self-motility and fuel-dependent affinity for surfaces affects how efficiently catalytically-active Janus microswimmers explore both liquid–solid and liquid–fluid interfaces decorated with arrays of similarly-sized obstacles. In a regime of constant velocity vs. fuel concentration, we find that microswimmer–obstacle interactions strongly depend on fuel concentration, leading to a counter-intuitive decrease in space exploration efficiency with increased available fuel for all interfaces. Using experiments and theoretical predictions, we attribute this phenomenon to a largely overlooked change in the surface properties of the microswimmers' catalytic cap upon H(2)O(2) exposure. Our findings have implications in the interpretation of experimental studies of catalytically active colloids, as well as in providing new handles to control their dynamics in complex environments. The Royal Society of Chemistry 2023-10-27 /pmc/articles/PMC10663988/ /pubmed/37946586 http://dx.doi.org/10.1039/d3sm01079a Text en This journal is © The Royal Society of Chemistry https://creativecommons.org/licenses/by-nc/3.0/ |
spellingShingle | Chemistry van Baalen, Carolina Uspal, William E. Popescu, Mihail N. Isa, Lucio Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title | Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title_full | Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title_fullStr | Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title_full_unstemmed | Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title_short | Transition from scattering to orbiting upon increasing the fuel concentration for an active Janus colloid moving at an obstacle–decorated interface |
title_sort | transition from scattering to orbiting upon increasing the fuel concentration for an active janus colloid moving at an obstacle–decorated interface |
topic | Chemistry |
url | https://www.ncbi.nlm.nih.gov/pmc/articles/PMC10663988/ https://www.ncbi.nlm.nih.gov/pubmed/37946586 http://dx.doi.org/10.1039/d3sm01079a |
work_keys_str_mv | AT vanbaalencarolina transitionfromscatteringtoorbitinguponincreasingthefuelconcentrationforanactivejanuscolloidmovingatanobstacledecoratedinterface AT uspalwilliame transitionfromscatteringtoorbitinguponincreasingthefuelconcentrationforanactivejanuscolloidmovingatanobstacledecoratedinterface AT popescumihailn transitionfromscatteringtoorbitinguponincreasingthefuelconcentrationforanactivejanuscolloidmovingatanobstacledecoratedinterface AT isalucio transitionfromscatteringtoorbitinguponincreasingthefuelconcentrationforanactivejanuscolloidmovingatanobstacledecoratedinterface |