Article ID | Journal | Published Year | Pages | File Type |
---|---|---|---|---|
1804029 | Journal of Magnetism and Magnetic Materials | 2008 | 4 Pages |
Abstract
A highly sensitive giant magnetoresistance sensor with a micropatterned trench is described for the measurement of the concentration of magnetic nanoparticles in a fluid, within a few micrometers from its surface. The measurement is based on an analysis of the time-dependent development of the signal. A comparison of the experimental data with the results of model-calculations reveals the significant roles played by diffusion and sedimentation in the fluid. These results are relevant for the development of reliable biological tests based on magnetic biosensors.
Related Topics
Physical Sciences and Engineering
Physics and Astronomy
Condensed Matter Physics
Authors
R.E. Thilwind, M. Megens, J.B.A.D. van Zon, R. Coehoorn, M.W.J. Prins,