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

被引：29

作者：

Lee, Wonhyun ^{[1
]}

Joo, Sungjung ^{[1
]}

Kim, Sun Ung ^{[1
]}

Rhie, Kungwon ^{[1
]}

Hong, Jinki ^{[1
]}

Shin, Kyung-Ho ^{[2
]}

Kim, Ki Hyun ^{[3
]}

机构：

[1] Korea Univ, Dept Phys, Chochiwon 339700, South Korea

[2] KIST, Nano Devices Res Ctr, Seoul 130650, South Korea

[3] Brookhaven Natl Lab, Upton, NY 11973 USA

来源：

APPLIED PHYSICS LETTERS | 2009年 / 94卷 / 15期

关键词：

biosensors; Hall effect transducers; microsensors; PARTICLES;

D O I：

10.1063/1.3122142

中图分类号：

O59 [应用物理学];

学科分类号：

摘要：

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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页数：3

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