Open AccessCharacterization of a Needle-Type Giant Magnetoresistance Sensor for Detection of Escherichia Coli’S Magnetic Marker
Author(s) -
Hamidreza Shirzadfar,
Mustapha Nadi,
Djilali Kourtiche,
Sotoshi Yamada,
Payman Shahabi
Publication year - 2015
Publication title -
international journal on smart sensing and intelligent systems
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.171
H-Index - 27
ISSN - 1178-5608
DOI - 10.21307/ijssis-2017-756
Subject(s) - giant magnetoresistance , superparamagnetism , materials science , escherichia coli , nanotechnology , focus (optics) , characterization (materials science) , enhanced data rates for gsm evolution , magnetoresistance , magnetic field , computer science , chemistry , physics , magnetization , optics , artificial intelligence , biochemistry , quantum mechanics , gene
- In the recent years, the introduction and development of simple and portable sensors has been the focus of researchers in nearly all scientific domains, particularly in the biomedical settings. Giant magnetoresistance (GMR) provides a cutting-edge sensor technology. The GMR-based sensors are capable to affordably and sensitively detect and quantify micro- and nano-magnetic particles, even in very weak magnetic fields. In this paper, we introduce a highly sensitive needle-type GMR-based sensor, designed for the identification and quantification of Escherichia coli O157:H7 bacteria covered by superparamagnetic beads, Dynabeads® MAX E.coli O157. The sensor characteristics, measurement system setup and the properties of the magnetic marker solution are discussed in detail. Index terms : Giant magnetoresistance (GMR) sensor, Escherichia coli O157:H7, magnetic marker, sensor sensitivity, magnetic fluid weight density, magnetic field.
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