Journal
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS
Volume 311, Issue 1, Pages 425-428Publisher
ELSEVIER SCIENCE BV
DOI: 10.1016/j.jmmm.2006.11.207
Keywords
biosensor; magneto-impedance; microwires array; magnetic microparticle; magnetic bead
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A new giant magneto-impedance (GMI) biosensor prototype based on a glass-coated microwires array is reported. The optimal measurement conditions and the influence of a liquid suspension of commercially available polymer-based magnetic microparticles on the magneto-impedance (MI) response of the array were studied. The relative change in MI response enlarges as the number of the active microwires increases. The highest variation of 35% was found for 10 active microwires, for a current intensity of 10 mA. Some possible applications of the biosensor prototype are outlined. (C) 2006 Elsevier B.V. All rights reserved.
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