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Title | Detecting and Estimating Magnetic Fluid Properties by a Needle- Type GMR Sensor |
Authors |
Shirzadfar, H.
Kourtiche, D. Haraszczuk, R. Nadi, M. Yamada, S. |
ORCID | |
Keywords |
GMR Sensor Magnetic Fluid Helmholtz Coil Weight Density Permeability |
Type | Conference Papers |
Date of Issue | 2012 |
URI | http://essuir.sumdu.edu.ua/handle/123456789/34967 |
Publisher | Sumy State University |
License | |
Citation | Detecting and Estimating Magnetic Fluid Properties by a Needle- Type GMR Sensor / H. Shirzadfar, D. Kourtiche, R. Haraszczuk et al. // Nanomaterials: Applications & Properties (NAP-2012) : 2-nd International conference, Alushta, the Crimea, September 17-22, 2012 / Edited by: A. Pogrebnjak. - Sumy : Sumy State University, 2012. - V. 1, No2. - 02NNBM29 |
Abstract |
Magnetic fluid or magnetic liquid are colloidal solutions of ultra-fine magnetic materials. Ferromagnet-ic materials consist of magnetic or other compound containing iron, nickel or cobalt, by a particle size of 5 to 50 nanometers, generally in a superparamagnetic, ferromagnetic or diamagnetic state. Magnetic fluids have a unique combination of strength and ability to interact with the magnetic field. This paper proposes to estimate and detect magnetic fluid weight density (concentration as low as 1%) by giant magnetore-sistance (GMR) sensor. The high sensitivity of the sensor is around 11 μV/μT. We propose to use it for bio-applications to characterize magnetic microfluides. For this application a Helmholtz coil was simulated and fabricated to make more uniform magnetic flux density.
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