Digital microfluidic manipulation device and manipulation method thereof
US8784749B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Dec 21, 2012 |
| Grant date | Jul 22, 2014 |
| Priority date | — |
| Expiry date | Mar 20, 2033 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T436/25
- WIPO fieldEngines, pumps, turbines
- WIPO sectorMechanical engineering
Abstract
This invention provides a digital microfluidic manipulation device and a manipulation method thereof. This device comprises a PDMS membrane having a surface comprising a plurality of hydrophobic microstructures; a plurality of air chambers arranged in an array and placed under the PDMS membrane; and a plurality of air channels, each of which connects to a corresponding one of the plurality of air chambers. When a suction force is transmitted via one of the plurality of air channels to the corresponding air chamber, a portion of the PDMS membrane above the air chamber deforms toward the air chamber, so that the surface morphology and the contact angle of the liquid/solid interface of the surface comprising the plurality of hydrophobic microstructures are altered and thereby to drive droplets.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.