Microfluidic device and method of operation
US7581429B2 · kind B2 · utility
Assignee
Inventors
Key dates
| Filing date | Jan 8, 2007 |
| Grant date | Sep 1, 2009 |
| Priority date | — |
| Expiry date | Sep 11, 2027 |
Classification
- Technology area (CPC Y)Emerging Cross-Sectional Technologies
- CPC primaryY10T137/0324
- WIPO fieldMeasurement
- WIPO sectorInstruments
Abstract
A microfluidic device and method for assessing properties of a fluid. The device includes a base supported by a substrate and a tube extending from the base and spaced apart from the substrate surface. The tube has an internal passage, first and second portions adjacent the base and defining, respectively, an inlet and outlet of the passage, and a distal portion. A drive electrode is located on the substrate surface adjacent the distal portion of the tube. Sensing electrodes are located on the substrate surface adjacent the first and second portions of the tube, and are adapted for sensing deflections of the first and second portions when vibrated with the drive electrode and from which the fluid property is determined. A pair of electrodes is located on the substrate surface between the drive and sensing electrodes, and are operated to enhance the performance of the microfluidic device, such as by supplementing the drive or sensing electrodes.
Source: USPTO / EPO open patent data. Objective bibliographic and citation counts.