Journal article
Planar Hall ring sensor for ultra-low magnetic moment sensing
In
Journal of Applied Physics
—
2015, Volume 117, Issue 15, pp. 154505
Abstract
The field sensitivity of a planar Hall effect (PHE) micro-ring type biosensor has been investigated as a function of magnetizing angle of the sensor material, for the sensing of low magnetic moment superparamagnetic labels. The field sensitivity is maximal at a magnetizing angle of α = 20°. At this optimized magnetizing angle, the field sensitivity of a PHE sensor is about 3.6 times higher than that measured at the conventional configuration, α = 90°.
This optimization enables the PHE-ring sensor to detect superparamagnetic biolabels with ultra-low magnetic moments down to 4 × 10-13 emu.
| Language: | English |
|---|---|
| Publisher: | AIP Publishing LLC |
| Year: | 2015 |
| Pages: | 154505 |
| ISSN: | 10897550 and 00218979 |
| Types: | Journal article |
| DOI: | 10.1063/1.4918534 |
| ORCIDs: | 0000-0003-0820-4668 |
Keywords
