Kurtoğlu, Evrim and Bilgin, Alp and Şeşen, Muhsincan and Mısırlıoğlu, Burç and Yıldız, Mehmet and Acar, Funda Yağcı and Koşar, Ali (2012) Ferrofluid actuation with varying magnetic fields for micropumping applications. Microfluidics and Nanofluidics (Sl), 13 (4). pp. 683-694. ISSN 1613-4982 (Print) 1613-4990 (Online)
This is the latest version of this item.
Official URL: http://dx.doi.org/10.1007/s10404-012-1008-5
Abstract
Magnetic nanoparticle suspensions and their manipulation are becoming an alternative research line. They have vital applications in the field of microfluidics such as microscale flow control in microfluidic circuits,
actuation of fluids in microscale, and drug delivery mechanisms. In microscale, it is possible and beneficial to use magnetic fields as actuators of such ferrofluids, where these fluids could move along a dynamic gradient of magnetic field so that a micropump could be generated with this technique. Thus, magnetically actuated ferrofluids could have the potential to be
used as an alternative micro pumping system. Magnetic actuation of nanofluids is
becoming an emergent field that will open up new possibilities in various fields of engineering. Different families of devices actuating ferrofluids were designed and developed in this study to reveal this potential. A family of these devices actuates discrete plugs, whereas a second family of devices generates continuous flows in tubes of inner diameters ranging from 254<m to 1.56mm. The devices were first tested with minitubes to prove the effectiveness of the proposed actuation method. The setups were then adjusted to conduct experiments on microtubes. Promising results were obtained from the experiments. Flow rates up to 120μl/s and 0.135μl/s were achieved in minitubes and microtubes with modest maximum magnetic field magnitudes of 300mT for
discontinuous and continuous actuation, respectively. The proposed magnetic
actuation method was proven to work as intended and is expected to be a strong
alternative to the existing micropumping methods such as electromechanical,
electrokinetic, and piezoelectric actuation. The results suggest that ferrofluids with magnetic nanoparticles merit more research efforts in micro pumping.
Item Type: | Article |
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Uncontrolled Keywords: | Microfluidics, Microchannel, Magnetic actuation, Ferrofluids, Nanofluids, Pumps, Magnetohydrodynamics |
Subjects: | T Technology > T Technology (General) T Technology > TJ Mechanical engineering and machinery Q Science > QC Physics > QC501-766 Electricity and magnetism Q Science > QD Chemistry |
Divisions: | Faculty of Engineering and Natural Sciences > Academic programs > Mechatronics Faculty of Engineering and Natural Sciences > Academic programs > Materials Science & Eng. Faculty of Engineering and Natural Sciences > Basic Sciences > Chemistry Faculty of Engineering and Natural Sciences > Basic Sciences > Physics Faculty of Engineering and Natural Sciences |
Depositing User: | Ali Koşar |
Date Deposited: | 06 Nov 2012 23:09 |
Last Modified: | 10 Mar 2020 15:16 |
URI: | https://research.sabanciuniv.edu/id/eprint/19969 |
Available Versions of this Item
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Development of magnetic pumps based on ferrofluid actuation with
varying magnetic fields for micropumping applications. (deposited 20 Oct 2011 14:24)
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Development of magnetic pumps based on ferrofluid actuation with varying magnetic fields for micropumping applications. (deposited 28 May 2012 14:31)
- Ferrofluid actuation with varying magnetic fields for micropumping applications. (deposited 06 Nov 2012 23:09) [Currently Displayed]
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Development of magnetic pumps based on ferrofluid actuation with varying magnetic fields for micropumping applications. (deposited 28 May 2012 14:31)