Detection of a countable number of magnetic particles for biological applications using a Hall device

被引：6

作者：

Kim, Y. ^{[1
]}

Lee, W. ^{[1
]}

Hong, J. ^{[1
]}

Hong, S. K. ^{[1
]}

Kim, K. H. ^{[1
]}

Kim, S. U. ^{[1
]}

Rhie, K. ^{[1
]}

Lee, S. ^{[2
]}

Chung, Y. ^{[3
]}

Shin, K. ^{[4
]}

机构：

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

[2] Hanyang Univ, Dept Elect & Comp Engn, Seoul 133791, South Korea

[3] Pusan Natl Univ, Dept Phys, Pusan 609735, South Korea

[4] Korea Adv Inst Sci & Technol, Nano Devices Res Ctr, Seoul 130650, South Korea

来源：

JOURNAL OF THE KOREAN PHYSICAL SOCIETY | 2008年 / 52卷 / 02期

关键词：

magnetic particle; biosensor; gradiometry;

D O I：

10.3938/jkps.52.513

中图分类号：

O4 [物理学];

学科分类号：

0702 ;

摘要：

We fabricated a magnetic field sensor made of an InAs quantum-well. Various numbers of magnetic particles were located on the sensor and the stray field generated by the magnetic particles was detected using micro-Hall magnetometry at room temperature. A numerical calculation carried out for this device successfully explained the experimental results and a useful equation relating the signal of the device and the number of particles was deduced.

引用

页码：513 / 516

页数：4

共 11 条

[1] Characterisation of Dynabeads® by magnetization measurements and Mossbauer spectroscopy [J].