TY - JOUR ID - SisLab144 UR - https://eprints.uet.vnu.edu.vn/eprints/id/eprint/144/ IS - 7 A1 - Bui, Dinh Tu A1 - Hung, T.Q. A1 - Thanh, N.T. A1 - Danh, T.M. A1 - Nguyen, Huu Duc A1 - Kim, CheolGi Y1 - 2008/// N2 - 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 ?m2 has been fabricated and characterized. Single PHE sensors exhibit a sensitivity of about 2.5 m?/Oe. It was well applied for single Dynabeads® M-280 detection, where one bead can induce a signal change, ?V?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. JF - Journal of Applied Physics VL - 104 KW - Hall effect;Hall effect devices;biological techniques;ferromagnetic materials;interface magnetism;iridium alloys;iron alloys;magnetic anisotropy;magnetic sensors;magnetoresistance;manganese alloys;nickel alloys;0707Df;8575Nn TI - Planar Hall Bead Array Counter Microchip with NiFe/IrMn Bilayers SP - 074701 AV - none EP - 074701 ER -