Magnetic microkayaks: propulsion of microrods precessing near a surface by kilohertz frequency, rotating magnetic fields
| Autor: | Ryan Hilaman, Pavel Stepanov, Aleksandar Nelson Nacev, Lamar O. Mair, Sahar Jafari, Benjamin A. Evans, Wei Wang, Irving N. Weinberg, Benjamin Shapiro, Sagar Chowdhury |
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| Rok vydání: | 2017 |
| Předmět: |
Physics
business.industry Mixing (process engineering) 02 engineering and technology Mechanics Propulsion 010402 general chemistry 021001 nanoscience & nanotechnology Translation (geometry) 01 natural sciences Rod 0104 chemical sciences Magnetic field Optics Flow (mathematics) Nano Paddle General Materials Science 0210 nano-technology business |
| Zdroj: | Nanoscale. 9(10) |
| ISSN: | 2040-3372 |
| Popis: | Surface-swimming nano- and micromotors hold significant potential for on-chip mixing, flow generation, sample manipulation, and microrobotics. Here we describe rotating microrods magnetized nearly orthogonally to their long axes. When actuated near a solid surface, these microrods demonstrate precessing motion, with rods describing a double cone similar to the motion of a kayaker's paddle. The precessing motion induces translation. At 1 kHz, these "microkayaks" move at translational velocities of ≈14 μm s-1 and generate advective flows up to 10 μm s-1. |
| Databáze: | OpenAIRE |
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