Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers.
The propulsion velocity of active colloids that asymmetrically catalyze a chemical reaction is probed experimentally as a function of their sizes. It is found that over the experimentally accessible range, the velocity decays as a function of size, with a rate that is compatible with an inverse size...
| Үндсэн зохиолчид: | , , , |
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| Формат: | Journal article |
| Хэл сонгох: | English |
| Хэвлэсэн: |
2012
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| _version_ | 1826284317088677888 |
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| author | Ebbens, S Tu, M Howse, JR Golestanian, R |
| author_facet | Ebbens, S Tu, M Howse, JR Golestanian, R |
| author_sort | Ebbens, S |
| collection | OXFORD |
| description | The propulsion velocity of active colloids that asymmetrically catalyze a chemical reaction is probed experimentally as a function of their sizes. It is found that over the experimentally accessible range, the velocity decays as a function of size, with a rate that is compatible with an inverse size dependence. A diffusion-reaction model for the concentrations of the fuel and waste molecules that takes into account a two-step process for the asymmetric catalytic activity on the surface of the colloid is shown to predict a similar behavior for colloids at the large size limit, with a saturation for smaller sizes. |
| first_indexed | 2024-03-07T01:12:01Z |
| format | Journal article |
| id | oxford-uuid:8d5927eb-73f9-42c3-be3b-2adf90f084cd |
| institution | University of Oxford |
| language | English |
| last_indexed | 2024-03-07T01:12:01Z |
| publishDate | 2012 |
| record_format | dspace |
| spelling | oxford-uuid:8d5927eb-73f9-42c3-be3b-2adf90f084cd2022-03-26T22:50:38ZSize dependence of the propulsion velocity for catalytic Janus-sphere swimmers.Journal articlehttp://purl.org/coar/resource_type/c_dcae04bcuuid:8d5927eb-73f9-42c3-be3b-2adf90f084cdEnglishSymplectic Elements at Oxford2012Ebbens, STu, MHowse, JRGolestanian, RThe propulsion velocity of active colloids that asymmetrically catalyze a chemical reaction is probed experimentally as a function of their sizes. It is found that over the experimentally accessible range, the velocity decays as a function of size, with a rate that is compatible with an inverse size dependence. A diffusion-reaction model for the concentrations of the fuel and waste molecules that takes into account a two-step process for the asymmetric catalytic activity on the surface of the colloid is shown to predict a similar behavior for colloids at the large size limit, with a saturation for smaller sizes. |
| spellingShingle | Ebbens, S Tu, M Howse, JR Golestanian, R Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title | Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title_full | Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title_fullStr | Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title_full_unstemmed | Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title_short | Size dependence of the propulsion velocity for catalytic Janus-sphere swimmers. |
| title_sort | size dependence of the propulsion velocity for catalytic janus sphere swimmers |
| work_keys_str_mv | AT ebbenss sizedependenceofthepropulsionvelocityforcatalyticjanussphereswimmers AT tum sizedependenceofthepropulsionvelocityforcatalyticjanussphereswimmers AT howsejr sizedependenceofthepropulsionvelocityforcatalyticjanussphereswimmers AT golestanianr sizedependenceofthepropulsionvelocityforcatalyticjanussphereswimmers |