Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors
Colloidal micromotors are important candidates for a wide spectrum of applications, ranging from medicine to environmental remediation. Thus far, the propulsion force determination has been obtained from the colloidal motor motion speed and surrounding viscosity via the Stokes drag. Herein, a precis...
| Main Authors: | , , , , , , , , , , |
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| Format: | Article |
| Language: | English |
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Wiley-VCH
2022-01-01
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| Series: | Advanced Photonics Research |
| Subjects: | |
| Online Access: | https://doi.org/10.1002/adpr.202100189 |
| _version_ | 1828147265425899520 |
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| author | Johannes Frueh Sven Rutkowski Tieyan Si Meiyu Gai Changyong Gao Sergei I. Tverdokhlebov Guangyu Qiu Jean Schmitt Qiang He Yu-Xuan Ren Jing Wang |
| author_facet | Johannes Frueh Sven Rutkowski Tieyan Si Meiyu Gai Changyong Gao Sergei I. Tverdokhlebov Guangyu Qiu Jean Schmitt Qiang He Yu-Xuan Ren Jing Wang |
| author_sort | Johannes Frueh |
| collection | DOAJ |
| description | Colloidal micromotors are important candidates for a wide spectrum of applications, ranging from medicine to environmental remediation. Thus far, the propulsion force determination has been obtained from the colloidal motor motion speed and surrounding viscosity via the Stokes drag. Herein, a precise force measurement method and detailed analysis of the fundamental propulsion mechanisms of colloidal Janus micromotors propelled by thermophoretic and steam bubble force vectors, revealing findings uninvestigated to date, are presented. Optical tweezers provide fast and high‐precision force measurements in all three orthogonal dimensions simultaneously. Colloidal Janus micromotors are compared with isotropic hot Brownian reference microparticles, which have no defined force vector that propels them perpendicular to the direction of the laser beam. Janus micromotors display a defined laser power intensity‐dependent thermophoretic propulsion, as well as bubble force‐based propulsion, after surpassing the threshold value for the water boiling. The steam bubble propulsion force vector and the thermophorethic force vectors sum up for the Janus micromotor propulsion direction. On the contrary, the bubble force counteracts photophoretic force in propagation direction of light. Moreover, the thermal‐based reduction of viscosity around the Janus colloidal motor contributes significantly to its speed and guidance abilities. |
| first_indexed | 2024-04-11T20:58:34Z |
| format | Article |
| id | doaj.art-a9f52ea4e13f452b8fb81f1364d09aeb |
| institution | Directory Open Access Journal |
| issn | 2699-9293 |
| language | English |
| last_indexed | 2024-04-11T20:58:34Z |
| publishDate | 2022-01-01 |
| publisher | Wiley-VCH |
| record_format | Article |
| series | Advanced Photonics Research |
| spelling | doaj.art-a9f52ea4e13f452b8fb81f1364d09aeb2022-12-22T04:03:36ZengWiley-VCHAdvanced Photonics Research2699-92932022-01-0131n/an/a10.1002/adpr.202100189Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal MicromotorsJohannes Frueh0Sven Rutkowski1Tieyan Si2Meiyu Gai3Changyong Gao4Sergei I. Tverdokhlebov5Guangyu Qiu6Jean Schmitt7Qiang He8Yu-Xuan Ren9Jing Wang10Key Laboratory of Microsystems and Microstructures Manufacturing Harbin Institute of Technology Harbin 150080 P. R. ChinaThe Weinberg Research Center Tomsk Polytechnic University 30 Lenin Avenue 634050 Tomsk Russian FederationSchool of Physics Harbin Institute of Technology Harbin 150080 P. R. ChinaThe Weinberg Research Center Tomsk Polytechnic University 30 Lenin Avenue 634050 Tomsk Russian FederationKey Laboratory of Microsystems and Microstructures Manufacturing Harbin Institute of Technology Harbin 150080 P. R. ChinaThe Weinberg Research Center Tomsk Polytechnic University 30 Lenin Avenue 634050 Tomsk Russian FederationInstitute of Environmental Engineering ETH Zürich Stefano-Franscini-Platz 3 8093 Zürich SwitzerlandInstitute of Environmental Engineering ETH Zürich Stefano-Franscini-Platz 3 8093 Zürich SwitzerlandKey Laboratory of Microsystems and Microstructures Manufacturing Harbin Institute of Technology Harbin 150080 P. R. ChinaInstitute for Translational Brain Research Fudan University Dongan Road 131 Shanghai 200032 P. R. ChinaInstitute of Environmental Engineering ETH Zürich Stefano-Franscini-Platz 3 8093 Zürich SwitzerlandColloidal micromotors are important candidates for a wide spectrum of applications, ranging from medicine to environmental remediation. Thus far, the propulsion force determination has been obtained from the colloidal motor motion speed and surrounding viscosity via the Stokes drag. Herein, a precise force measurement method and detailed analysis of the fundamental propulsion mechanisms of colloidal Janus micromotors propelled by thermophoretic and steam bubble force vectors, revealing findings uninvestigated to date, are presented. Optical tweezers provide fast and high‐precision force measurements in all three orthogonal dimensions simultaneously. Colloidal Janus micromotors are compared with isotropic hot Brownian reference microparticles, which have no defined force vector that propels them perpendicular to the direction of the laser beam. Janus micromotors display a defined laser power intensity‐dependent thermophoretic propulsion, as well as bubble force‐based propulsion, after surpassing the threshold value for the water boiling. The steam bubble propulsion force vector and the thermophorethic force vectors sum up for the Janus micromotor propulsion direction. On the contrary, the bubble force counteracts photophoretic force in propagation direction of light. Moreover, the thermal‐based reduction of viscosity around the Janus colloidal motor contributes significantly to its speed and guidance abilities.https://doi.org/10.1002/adpr.202100189hot Brownian motionJanus colloid motorsmicroscopic steam bubblesoptical tweezersplasmonic micromotorspropulsion force measurements |
| spellingShingle | Johannes Frueh Sven Rutkowski Tieyan Si Meiyu Gai Changyong Gao Sergei I. Tverdokhlebov Guangyu Qiu Jean Schmitt Qiang He Yu-Xuan Ren Jing Wang Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors Advanced Photonics Research hot Brownian motion Janus colloid motors microscopic steam bubbles optical tweezers plasmonic micromotors propulsion force measurements |
| title | Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors |
| title_full | Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors |
| title_fullStr | Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors |
| title_full_unstemmed | Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors |
| title_short | Propulsion Mechanisms of Light‐Driven Plasmonic Colloidal Micromotors |
| title_sort | propulsion mechanisms of light driven plasmonic colloidal micromotors |
| topic | hot Brownian motion Janus colloid motors microscopic steam bubbles optical tweezers plasmonic micromotors propulsion force measurements |
| url | https://doi.org/10.1002/adpr.202100189 |
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