Kim, Y. Joo, S. Lee, W. Hong, J. Hong, S. K. Kim, K. H. Kim, S. U. Rhie, K. Lee, S. Chung, Y. Shin, K. 2024-01-21T00:01:21Z 2024-01-21T00:01:21Z 2021-08-31 2008-02 0374-4884 https://pubs.kist.re.kr/handle/201004/133805 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. English KOREAN PHYSICAL SOC Detection of a countable number of magnetic particles for biological applications using a Hall device Article 10.3938/jkps.52.513 1 JOURNAL OF THE KOREAN PHYSICAL SOCIETY, v.52, no.2, pp.513 - 516 JOURNAL OF THE KOREAN PHYSICAL SOCIETY 52 2 513 516 N scie scopus kci ART001225660 000253259400060 2-s2.0-40049097370 Physics, Multidisciplinary Physics Article MAGNETORESISTANCE BIOSENSORS SENSORS magnetic particle biosensor gradiometry