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Proceedings Paper

Microfabrication of nanowires-based GMR biosensor
Author(s): R. Bellamkonda; T. John; B. Mathew; M. DeCoster; H. Hegab; J. Palmer; D. Davis
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Paper Abstract

This study focuses on the development of current-perpendicular-to plane (CPP) Giant Magnetoresistance (GMR) of CoNiCu/Cu multilayered nanowire based microfluidic sensors for the detection of magnetic nanoparticles and fluids. The visible measurable variations in electrical voltage due to changes in external magnetic field are later to be monitored in microfluidic biosensor for the detection of toxicants in cells. An early prototype device was fabricated and tested using both an aqueous nonmagnetic medium (water) and a commercially available ferrofluid solution. A magnetic field of 0.01T caused a resistance change of 1.37% for ferrofluid, while a 1.1% GMR was recorded for the water baseline.

Paper Details

Date Published: 12 May 2009
PDF: 7 pages
Proc. SPIE 7318, Micro- and Nanotechnology Sensors, Systems, and Applications, 73181H (12 May 2009); doi: 10.1117/12.819076
Show Author Affiliations
R. Bellamkonda, Louisiana Tech Univ. (United States)
T. John, Louisiana Tech Univ. (United States)
B. Mathew, Louisiana Tech Univ. (United States)
M. DeCoster, Louisiana Tech Univ. (United States)
H. Hegab, Louisiana Tech Univ. (United States)
J. Palmer, Louisiana Tech Univ. (United States)
D. Davis, Louisiana Tech Univ. (United States)


Published in SPIE Proceedings Vol. 7318:
Micro- and Nanotechnology Sensors, Systems, and Applications
Thomas George; M. Saif Islam; Achyut K. Dutta, Editor(s)

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