dorsal/arxiv
View SchemaAnalysis of Particle Transport in a Magnetophoretic Microsystem
| Authors | E. P. Furlani |
|---|---|
| Categories | |
| ArXiv ID | physics/0612211 |
| URL | https://arxiv.org/abs/physics/0612211 |
| DOI | 10.1063/1.2164531 |
| Journal | J. Appl. Phys. 99, 024912 (2006) |
Abstract
An analytical analysis is presented of the transport and capture of magnetic micro/nano-particles in a magnetophoretic microsystem that consists of an array of integrated soft-magnetic elements embedded beneath a microfluidic channel. The elements, which are polarized by a bias field, produce a nonuniform field distribution that gives rise to a force on magnetic particles within the microchannel. The equations governing particle motion are derived using analytical expressions for the dominant magnetic and fluidic forces. The magnetic force is obtained using an analytical expression for the field distribution in the microchannel combined with a linear magnetization model for the magnetic response of particles. The theory takes into account particle size and material properties, the bias field, the dimensions of the microchannel, the fluid properties, and the flow velocity. The equations of motion are solved to study particle transport and capture. The analysis indicates that the particles exhibit an oscillatory motion as they traverse the microsystem, and that a high capture efficiency can be obtained in practice.
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"abstract": "An analytical analysis is presented of the transport and capture of magnetic\nmicro/nano-particles in a magnetophoretic microsystem that consists of an array\nof integrated soft-magnetic elements embedded beneath a microfluidic channel.\nThe elements, which are polarized by a bias field, produce a nonuniform field\ndistribution that gives rise to a force on magnetic particles within the\nmicrochannel. The equations governing particle motion are derived using\nanalytical expressions for the dominant magnetic and fluidic forces. The\nmagnetic force is obtained using an analytical expression for the field\ndistribution in the microchannel combined with a linear magnetization model for\nthe magnetic response of particles. The theory takes into account particle size\nand material properties, the bias field, the dimensions of the microchannel,\nthe fluid properties, and the flow velocity. The equations of motion are solved\nto study particle transport and capture. The analysis indicates that the\nparticles exhibit an oscillatory motion as they traverse the microsystem, and\nthat a high capture efficiency can be obtained in practice.",
"arxiv_id": "physics/0612211",
"authors": [
"E. P. Furlani"
],
"categories": [
"physics.bio-ph",
"physics.comp-ph"
],
"doi": "10.1063/1.2164531",
"journal_ref": "J. Appl. Phys. 99, 024912 (2006)",
"title": "Analysis of Particle Transport in a Magnetophoretic Microsystem",
"url": "https://arxiv.org/abs/physics/0612211"
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