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Browse Journals & Magazines > Journal of Applied Physics ...> Volume:99 Issue:8 Help

Detection of magnetically labeled DNA using pseudomorphic AlGaAs/InGaAs/GaAs heterostructure micro-Hall biosensors

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7 Author(s)
Togawa, Kiyoshi ; Department of Electrical and Electronic Engineering, Tokyo Institute of Technology, O-okayama, Meguro-ku, Tokyo 152-8552, Japan ; Sanbonsugi, Hideaki ; Sandhu, Adarsh ; Abe, Masanori
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 nT/(Hz)1/2 (..."/>

Your organization might have access to this article on the publisher's site. To check, click on this link:http://dx.doi.org/+10.1063/1.2162041 

Hall-effect biosensors with a magnetic-field sensitivity of 23 nT/(Hz)1/2 (30×30 μm2, at a drive current of 400 μA) were fabricated using pseudomorphic AlGaAs/InGaAs/GaAs heterostructures for detection of DNA labeled with magnetic beads. Magnetic beads with diameters of 120 nm were selectively immobilized onto the surfaces of the Hall biosensors using highly specific hybridization of complementary oligonucleotides and were subsequently detected by measurement of the ac magnetic susceptibility of the beads.

Published in:
Journal of Applied Physics  (Volume:99 ,  Issue: 8 )

Date of Publication: Apr 2006

Page(s):
08P103 - 08P103-3
ISSN :
0021-8979
Digital Object Identifier :
10.1063/1.2162041
Product Type:
Journals & Magazines
Date of Current Version :
18 June 2009
Issue Date :
Apr 2006

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