relation: https://eprints.uet.vnu.edu.vn/eprints/id/eprint/144/ title: Planar Hall Bead Array Counter Microchip with NiFe/IrMn Bilayers creator: Bui, Dinh Tu creator: Hung, T.Q. creator: Thanh, N.T. creator: Danh, T.M. creator: Nguyen, Huu Duc creator: Kim, CheolGi description: The planar Hall effect (PHE) magnetic bead array countermicrochip integrating 24 of single sensors based on a simple NiFe/IrMn bilayer structure with a patterned size of 3×3 μm2 has been fabricated and characterized. Single PHE sensors exhibit a sensitivity of about 2.5 mΩ/Oe. It was well applied for single Dynabeads® M-280 detection, where one bead can induce a signal change, ΔV∼2.2 mV, under the applied magnetic field of 20 Oe and a sensing current of 2 mA. This type of microchip is promising for quickly detecting and identifying multiple biological agents in the environment. date: 2008 type: Article type: PeerReviewed identifier: Bui, Dinh Tu and Hung, T.Q. and Thanh, N.T. and Danh, T.M. and Nguyen, Huu Duc and Kim, CheolGi (2008) Planar Hall Bead Array Counter Microchip with NiFe/IrMn Bilayers. Journal of Applied Physics, 104 (7). 074701-074701.