Journal
MICROMACHINES
Volume 8, Issue 7, Pages -Publisher
MDPI
DOI: 10.3390/mi8070198
Keywords
micromotors; viscosity; mechanical model
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Funding
- National Program on Key Basic Research Project (973 Program) [2013CB632505]
- National High-Tech R and D Program of China (863 Program) [2012AA051104]
- Independent Innovation Foundation of WuHan University of Technology [WUT: 2016IVA067]
- National Natural Science Foundation of China [11602181]
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Micromotors have shown significant potential for diverse future applications. However, a poor understanding of the propelling mechanism hampers its further applications. In this study, an accurate mechanical model of the micromotor has been proposed by considering the geometric asymmetry and fluid viscosity based on hydrodynamic principles. The results obtained from the proposed model are in a good agreement with the experimental results. The effects of the semi-cone angle on the micromotor are re-analyzed. Furthermore, other geometric parameters, like the length-radius aspect ratio, exert great impact on the velocity. It is also observed that micromotors travel much slower in highly viscous solutions and, hence, viscosity plays an important role.
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