Please use this identifier to cite or link to this item:
|Title:||Tuning magnetofluidic spreading in microchannels||Authors:||Wang, Zhaomeng
Varma, Vijaykumar B.
Wang, Zhi Ping
Ramanujan, Raju Vijayaraghavan
|Issue Date:||2015||Source:||Wang, Z., Varma, V. B., Wang, Z. P., & Ramanujan, R. V. (2015). Tuning magnetofluidic spreading in microchannels. Journal of Micromechanics and Microengineering, 25(12), 124001-.||Series/Report no.:||Journal of Micromechanics and Microengineering||Abstract:||Magnetofluidic spreading (MFS) is a phenomenon in which a uniform magnetic field is used to induce spreading of a ferrofluid core cladded by diamagnetic fluidic streams in a three-stream channel. Applications of MFS include micromixing, cell sorting and novel microfluidic lab-on-a-chip design. However, the relative importance of the parameters which govern MFS is still unclear, leading to non-optimal control of MFS. Hence, in this work, the effect of various key parameters on MFS was experimentally and numerically studied. Our multi-physics model, which combines magnetic and fluidic analysis, showed excellent agreement between theory and experiment. It was found that spreading was mainly due to cross-sectional convection induced by magnetic forces, and can be enhanced by tuning various parameters. Smaller flow rate ratio, higher magnetic field, higher core stream or lower cladding stream dynamic viscosity, and larger magnetic particle size can increase MFS. These results can be used to tune magnetofluidic spreading in microchannels.||URI:||https://hdl.handle.net/10356/84121
|ISSN:||0960-1317||DOI:||10.1088/0960-1317/25/12/124001||Rights:||© 2015 IOP Publishing Ltd.||Fulltext Permission:||none||Fulltext Availability:||No Fulltext|
|Appears in Collections:||MSE Journal Articles|
Updated on Jun 18, 2020
Updated on Mar 3, 2021
Updated on Jun 23, 2022
Items in DR-NTU are protected by copyright, with all rights reserved, unless otherwise indicated.