G - Physics – 01 – R
Patent
G - Physics
01
R
G01R 33/12 (2006.01) G01N 27/72 (2006.01)
Patent
CA 2394857
An apparatus is provided for quantitatively measuring groups of magnetic particles (11). The particles (11) are complexed with substances to be determined and are excited in a magnetic field. The magnetizations of the magnetic particles are thereby caused to oscillate at the excitation frequency in the manner of a dipole to create their own fields. These fields are inductively coupled to at least one sensor such as sensing coils (43) fabricated in a gradiometer configuration. The output signals from the sensing coils (43) are appropriately amplified and processed to provide useful output indications (67).
L'invention concerne un dispositif servant à mesurer quantitativement des groupes de particules (11) magnétiques. Les particules (11) forment des complexes avec des substances à déterminer et sont excitées dans un champ magnétique. La magnétisation des particules magnétiques oscille ainsi à la fréquence d'excitation à la manière d'un dipôle, et produit ses propres champs. Ces champs sont reliés par couplage inductif à au moins un capteur, telles que des bobines (43) de détection élaborées dans une configuration de gradiomètre. Les signaux de sortie provenant des bobines (43) de détection sont amplifiés et traités de manière appropriée pour fournir des indications (67) de sortie utiles.
Black Randall Christopher
Diederichs Jost Herman
Jensen Kurt Gordon
Simmonds Michael Bancroft
Mbm Intellectual Property Law Llp
Quantum Design Inc.
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