DocumentCode :
1194767
Title :
Practical Hall sensors for biomedical instrumentation
Author :
Sandhu, Adarsh ; Handa, Hiroshi
Author_Institution :
Dept. of Electr. Eng., Tokyo Inst. of Technol., Japan
Volume :
41
Issue :
10
fYear :
2005
Firstpage :
4123
Lastpage :
4127
Abstract :
Development of instrumentation for medical diagnosis and bioscreening based on biological magnetic labeling and detection of superparamagnetic particles is an active, multidisciplinary field of research. The scalability, high sensitivity, and compatibility with semiconductor integrated circuits (ICs) makes thin film micro-Hall sensors a practical choice of technology for the detection of magnetic particles. We describe the results of our systematic study on the fabrication of high-sensitivity micro-Hall devices using InSb, InAs, GaN, and bismuth thin films for detection of superparamagnetic particles coated with biological molecules. Sensor fabrication, scalability, magnetic-field sensitivity, and biological functionalization are discussed.
Keywords :
Hall effect devices; III-V semiconductors; biosensors; gallium compounds; indium compounds; magnetic particles; magnetic thin film devices; microsensors; patient diagnosis; radioactive tracers; superparamagnetism; GaN; Hall sensors; Hall-effect devices; InAs; InSb; biological functionalization; biological magnetic labeling; biological molecules; biomedical instrumentation; biomedical measurements; bioscreening; deoxyribonucleic acid; magnetic-field sensitivity; magnetochemical sensors; medical diagnosis; microHall sensors; semiconductor integrated circuits; sensor fabrication; superparamagnetic particles detection; thin film sensor; Biomedical measurements; Biosensors; Fabrication; Instruments; Magnetic sensors; Medical diagnosis; Scalability; Semiconductor thin films; Thin film circuits; Thin film sensors; Biomedical measurements; Hall-effect devices; deoxyribonucleic acid (DNA); magnetochemical sensors;
fLanguage :
English
Journal_Title :
Magnetics, IEEE Transactions on
Publisher :
ieee
ISSN :
0018-9464
Type :
jour
DOI :
10.1109/TMAG.2005.855339
Filename :
1519556
Link To Document :
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