Abstract
Rapid Methods for the Detection of Bacteria via Giant Magnetoresistance Sensor and Biomagnetic Marker
Highlights
Since its description in 1988, due to their small size, low power consumption, robustness in harsh conditions and relatively low cost, many sensors are developed or designed on the basis of the GMR effect are increasingly used in industrial electronics, IT, automotive industry, as well as equipment medical diagnosis
The giant magnetoresistance effect is observed in multilayer materials with alternating thin layers of ferromagnetic and nonmagnetic metals
The resistance of a sample reaches its maximum when local magnetic fields in ferromagnetic materials are in antiparallel and a minimum when they are in parallel
Summary
Since its description in 1988, due to their small size, low power consumption, robustness in harsh conditions and relatively low cost, many sensors are developed or designed on the basis of the GMR effect are increasingly used in industrial electronics, IT, automotive industry, as well as equipment medical diagnosis. The conduction electrons of spin whose direction of spin is the same as the direction of the magnetic field inside the GMR encounter less resistance to their motion and have more freedom of movement than the electrons with spin oriented against the internal magnetic fields, which encounter greater resistance to their motion, and often collide with atoms in their environment. The giant magnetoresistance effect is observed in multilayer materials with alternating thin layers of ferromagnetic and nonmagnetic metals.
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