Magnetic detection of mercuric ion using giant magnetoresistance-based biosensing system.

Microfluidic Biosensing using Giant Magnetoresistance Sensors

Detection of Meissner Effect in YBCO using Giant Magnetoresistors

Superconductivity was first discovered around 1913 by Heike Kamerlingh-Onnes as a result of his systematic study of conductivity at very low temperatures using liquid Helium. He discovered that the resistance of Mercury suddenly dropped to zero at 4.2 Kelvin. Thus at 4.2K mercury makes a transition from normal conducting state to superconductive state. This temperature at which a material’s res...

Characterization of a Needle-type Giant Magnetoresistance Sensor for Detection of Escherichia Coli’s Magnetic Marker

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 microand nano-magnetic particles, even in very...

Effects of ion-beam irradiation on the L10 phase transformation and their magnetic properties of FePt and PtMn films (Invited)

In this paper, we illustrate how to modify the structure and magnetic properties of L10 FePt and PtMn films using ion-beam irradiation. Highly ordered L10 FePt and PtMn phases were achieved directly by using 2 MeV He-ion irradiation without conventional post-annealing. A high ion-beam current density (~μA/cm ) was used to achieve direct beam heating on samples. This irradiation-induced heating ...

High-Spatial-Resolution Magnetic-Field Measurement by Giant Magnetoresistance Sensor – Applications to Nondestructive Evaluation and Biomedical Engineering

Giant magnetoresistance (GMR) sensor has been developed and widely applied to use as magnetic read head in data storage industry. This paper describes new applications of magnetic-field measurement with high spatial-resolution and high sensitivity to nondestructive evaluation and biomedical engineering. For nondestructive evaluation, the GMR sensor, used as magnetic sensor based on eddy-current...