The patent badge is an abbreviated version of the USPTO patent document. The patent badge does contain a link to the full patent document.
The patent badge is an abbreviated version of the USPTO patent document. The patent badge covers the following: Patent number, Date patent was issued, Date patent was filed, Title of the patent, Applicant, Inventor, Assignee, Attorney firm, Primary examiner, Assistant examiner, CPCs, and Abstract. The patent badge does contain a link to the full patent document (in Adobe Acrobat format, aka pdf). To download or print any patent click here.
Patent No.:
Date of Patent:
Jun. 26, 2012
Filed:
Sep. 24, 2010
Ian Papautsky, Mason, OH (US);
Ali Asgar S. Bhagat, Cincinnati, OH (US);
Ian Papautsky, Mason, OH (US);
Ali Asgar S. Bhagat, Cincinnati, OH (US);
University of Cincinnati, Cincinnati, OH (US);
Abstract
A spiral microchannel particle separator includes an inlet for receiving a solution containing particles, at least two outlets, and a microchannel arranged in a plurality of loops. Particles within a solution flowing through the spiral microchannel experience a lift force Fand a Dean drag force F. The spiral radius of curvature R and the hydraulic diameter Dof the spiral microchannel are such that for a flow rate U of the solution, the lift force Fand a Dean drag force Fare approximately equal and act in opposite directions for particles of a first size. The particles of the first size are focused in a single stream located at an equilibrium position near an inner wall of the microchannel. In another embodiment, a straight microchannel particle separator separates particles by modulating shear rates via high aspect ratios that focuses particles of a first size along two first walls.