Tunable affinity system and method for ferrofluid-based capture assays
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United States of America Patent
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May 28, 2019
Grant Date -
Jul 5, 2018
app pub date -
Jul 1, 2016
filing date -
Jul 1, 2015
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Abstract
Devices, methods, and systems are provided for extracting particles from a ferrofluid and for rapid affinity measurements. Such systems may comprise a fluidic channel or chamber configured to include a ferrofluid having a plurality of target particles and background particles. The systems may include a capture region configured to capture at least a portion of the plurality of target particles. In addition, the systems include a first magnetic field generator and a second magnetic field generator. The first magnetic field generator may be arranged proximate to the fluidic channel, the first magnetic field generator being configured to generate a first magnetic field configured to direct the plurality of target particles towards the capture region. The second magnetic field generator can be arranged to be proximate to the capture region, and is further configured to generate an affinity thresholding magnetic field configured to remove background particles from the capture region.
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