Micro-machined filter for magnetic particles
AssigneeInternational Business Machines Corporation
InventorsBabar Khan, Emily R. Kinser
Life of this patent
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Abstract
A method for filtering magnetic particles includes spinning a filter including a plurality of pores within a substrate. The method further includes applying, subsequent to spinning the filter, an external magnetic field to the filter. The method includes disposing a solution including a first particle and a second particle onto the filter. The first particle includes a magnetic particle of interest. The method further includes separating the first particle from the second particle by capturing the first particle within a pore of the plurality of pores within the substrate.
Claims13
A filter system for filtering magnetic particles, the filter system comprising:
- a micro-machined filter comprising:
- a plurality of pores within a substrate;
- and
- a magnetic liner arranged on sidewalls and a bottommost surface of pores of the plurality of pores;
- a coating directly on the magnetic liner, the coating comprising a ligand for the magnetic particle of interest, the ligand positioned such that the magnetic liner is between the ligand and the sidewalls or bottommost surface of the pores;
- and
- wherein a pore of the plurality of pores has a width that is greater than a magnetic particle of interest, such that the magnetic particle of interest binds to the magnetic liner within the pore.
Dependencies are inferred from the claim text.