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Magnetic bead counter using a micro-Hall sensor for biological applications

Authors
Lee, WonhyunJoo, SungjungKim, Sun UngRhie, KungwonHong, JinkiShin, Kyung-HoKim, Ki Hyun
Issue Date
13-4월-2009
Publisher
AMER INST PHYSICS
Keywords
biosensors; Hall effect transducers; microsensors
Citation
APPLIED PHYSICS LETTERS, v.94, no.15
Indexed
SCIE
SCOPUS
Journal Title
APPLIED PHYSICS LETTERS
Volume
94
Number
15
URI
https://scholar.korea.ac.kr/handle/2021.sw.korea/120243
DOI
10.1063/1.3122142
ISSN
0003-6951
Abstract
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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과학기술대학 (디스플레이·반도체물리학부 반도체물리전공)
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