Magnetic microspheres for use in fluorescence-based...

H - Electricity – 01 – F

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H01F 1/11 (2006.01) G01N 33/543 (2006.01) G01N 33/58 (2006.01) H01F 1/06 (2006.01)

Patent

CA 2595292

Microspheres, populations of microspheres, and methods for forming microspheres are provided. One microsphere configured to exhibit fluorescent and magnetic properties includes a core microsphere and a magnetic material coupled to a surface of the core microsphere. About 50% or less of the surface of the core microsphere is covered by the magnetic material. The microsphere also includes a polymer layer surrounding the magnetic material and the core microsphere. One population of microspheres configured to exhibit fluorescent and magnetic properties includes two or more subsets of microspheres. The two or more subsets of microspheres are configured to exhibit different fluorescent and/or magnetic properties. Individual microspheres in the two or more subsets are configured as described above.

L'invention concerne des microsphères, des populations de microsphères et des procédés de formation de microsphères. Une microsphère conçue de manière à présenter des propriétés fluorescentes et magnétiques comprend une microsphère noyau et une matière magnétique couplée à une surface de la microsphère noyau. Environ 50 % ou moins de la surface de la microsphère noyau est recouverte par la matière magnétique. La microsphère comprend également une couche polymère entourant la matière magnétique et la microsphère noyau. Une population de microsphère conçue de manière à présenter des propriétés fluorescentes et magnétiques comprend deux ou plusieurs sous-ensembles de microsphères. Les deux ou plusieurs sous-ensembles de microsphères sont conçus de manière à présenter des propriétés fluorescentes et/ou magnétiques différentes. Des microsphères individuelles dans deux ou plusieurs sous-ensembles sont configurées telles que décrit ci-dessus.

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