期刊
JOURNAL OF FLUID MECHANICS
卷 828, 期 -, 页码 318-352出版社
CAMBRIDGE UNIV PRESS
DOI: 10.1017/jfm.2017.502
关键词
biological fluid dynamics; micro-/nano-fluid dynamics; propulsion
资金
- EPSRC [EP/G026440/1]
- HFSP [RGP0061/2013]
- University of Bristol
- BrisSynBio
- BBSRC/EPSRC Advanced Synthetic a Biology Research Centre [BB/L01386X/1]
- Biotechnology and Biological Sciences Research Council [BB/L01386X/1] Funding Source: researchfish
- BBSRC [BB/L01386X/1] Funding Source: UKRI
We present a detailed theoretical study which demonstrates that electrokinetic effects can also play a role in the motion of metallic-insulator spherical Janus particles. Essential to our analysis is the identification of the fact that the reaction rates depend on Pt-coating thickness and that the thickness of coating varies from pole to equator of the coated hemisphere. We find that their motion is due to a combination of neutral and ionic-diffusiophoretic as well as electrophoretic effects whose interplay can be changed by varying the ionic properties of the fluid. This has great potential significance for optimizing performance of designed synthetic swimmers.
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