In:
Journal of Applied Physics, AIP Publishing, Vol. 99, No. 8 ( 2006-04-15)
Abstract:
Hall-effect biosensors with a magnetic-field sensitivity of 23nT∕(Hz)1∕2 (30×30μm2, at a drive current of 400μA) 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.
Type of Medium:
Online Resource
ISSN:
0021-8979
,
1089-7550
Language:
English
Publisher:
AIP Publishing
Publication Date:
2006
detail.hit.zdb_id:
220641-9
detail.hit.zdb_id:
3112-4
detail.hit.zdb_id:
1476463-5
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