FIELD: physics.
SUBSTANCE: invention relates to the first micro-magnetometric system for detecting the presence of ultra-small quantities of magnetic particles up to a single magnetic particle or a single magnetic nano- or microscale object. Micro-magnetometric system for detecting the presence of ultra-small quantities of magnetic particles comprises the first magnetic hybrid AMR/PHR multi-ring sensor using an electrical configuration of the Wheatstone bridge, the first current source, the first voltage measuring device, a set of, at least, one magnetic particle deposited on the first magnetic sensor, and a processing unit for detecting the measured differential voltages of the magnetic flow deflection from the set, characterizing the presence of, at least, one deposited magnetic particle.
EFFECT: increasing the sensitivity of detecting the magnetic particles.
23 cl, 14 dwg
