Magnetic bead counter using a micro-Hall sensor for biological applications
- Magnetic bead counter using a micro-Hall sensor for biological applications
- 이운현; 주성중; 김선웅; 이긍원; 홍진기; 신경호; 김기현
- Magnetic bead; micro-Hall sensor
- Issue Date
- Applied physics letters
- VOL 94, 153903-1-153903-3
- Micro-Hall sensors have been fabricated, and various numbers of micron-size magnetic beads have
been placed within the sensor area. The Hall resistances measured at room temperature are found to
be proportional to the number of the beads, and are in good agreement with the numerically
simulated results presented in this study. Our sensors are designed to measure the number of beads
between zero and full-scale signals for a given number range of interest. The effects of miniaturizing
the beads and sensors to nanoscale are also discussed.
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