Share Email Print
cover

Proceedings Paper

In-line monitoring of magnetic microparticles using GMR sensors in microfluidic systems
Author(s): Naga S. Korivi; Jin-Woo Choi
Format Member Price Non-Member Price
PDF $14.40 $18.00

Paper Abstract

This paper presents the development of a giant magnetoresistive (GMR) sensor array for the in-line monitoring of magnetic microparticles in microfluidic systems. The GMR sensors employ Ni80Fe20/Cu multilayers with the thickness of each layer controlled between 1 nm to 3 nm, achieving a maximum magnetoresistance (MR) value of 16%. The multilayer films exhibit specific magnetoresistive properties that can be employed for the in-line detection of particular biological molecules bound to magnetic microparticles. The electrical current variations in the developed GMR sensor array in the presence of magnetic microparticles show that the GMR sensor array can be used for real-time monitoring of magnetic microparticles in microfluidic systems.

Paper Details

Date Published: 22 January 2005
PDF: 8 pages
Proc. SPIE 5718, Microfluidics, BioMEMS, and Medical Microsystems III, (22 January 2005); doi: 10.1117/12.591270
Show Author Affiliations
Naga S. Korivi, Louisiana State Univ. (United States)
Jin-Woo Choi, Louisiana State Univ. (United States)


Published in SPIE Proceedings Vol. 5718:
Microfluidics, BioMEMS, and Medical Microsystems III
Ian Papautsky; Isabelle Chartier, Editor(s)

© SPIE. Terms of Use
Back to Top