Methods for the filtration of small-volume heterogeneous suspensions in a digital microfluidic device
US11883823B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Apr 3, 2018 |
| Grant date | Jan 30, 2024 |
| Priority date | — |
| Expiry date | Jun 18, 2040 |
Classification
- Technology area (CPC B)Performing Operations; Transporting
- CPC primaryB01L2300/161
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
Disclosed herein are two related techniques for digital microfluidic (DMF) processing of liquids that rely on electrostatic actuation of fluid through a strip of solid, porous media. In the first technique, droplets in a DMF device containing particles of different sizes are driven through a solid porous medium, allowing for filtering, concentration, and recovery of the particles into droplets on the basis of size. In the second technique, an aliquot of liquid media is loaded directly onto a solid porous medium, where it is wicked into a DMF device, such that the filtrate can be collected into droplets. Both techniques may be useful for generating plasma from whole blood on a DMF device, an operation that will have far-reaching implications for diagnostic applications of digital microfluidics.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.