Multilayer hydrodynamic sheath flow structure
US7997831B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Nov 2, 2009 |
| Grant date | Aug 16, 2011 |
| Priority date | — |
| Expiry date | Nov 2, 2029 |
Classification
- Technology area (CPC G)Physics
- CPC primaryG01N15/1409
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microfabricated sheath flow structure for producing a sheath flow includes a primary sheath flow channel for conveying a sheath fluid, a sample inlet for injecting a sample into the sheath fluid in the primary sheath flow channel, a primary focusing region for focusing the sample within the sheath fluid and a secondary focusing region for providing additional focusing of the sample within the sheath fluid. The secondary focusing region may be formed by a flow channel intersecting the primary sheath flow channel to inject additional sheath fluid into the primary sheath flow channel from a selected direction. A sheath flow system may comprise a plurality of sheath flow structures operating in parallel on a microfluidic chip.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.