Title:
MICROFLUIDIC SYSTEM
Document Type and Number:
WIPO Patent Application WO2005100953
Kind Code:
A3
Abstract:
A system for measuring fluid viscosity includes microfluidic channels (16) coupled to a micro-cavity (15) having a flexible capacitive sensing diaphragm (12). The system for measuring viscosity further includes semiconductive electrode zones (22, 24) near the micro-cavity for applying an electric field across the electrode zones. The electric field results in increased fluid pressure and, therefore, a deflection of the diaphragm (12). The deflection changes the capacitance of the capacitive sensing diaphragm (12) which is used to determine the viscosity of the fluid. Pumps such as a thermal pump (62) or a surface acoustic wave pump (112) are used to control fluid flow to and from the micro-cavity. Semiconductive device fabrication techniques are also employed to produce the viscosity measuring system.
Inventors:
SPIVAK ALEXANDER F (US)
Application Number:
PCT/US2005/011987
Publication Date:
April 06, 2006
Filing Date:
April 06, 2005
Export Citation:
Assignee:
KAVLICO CORP (US)
SPIVAK ALEXANDER F (US)
SPIVAK ALEXANDER F (US)
International Classes:
F04B19/24; F04B43/04; F04B43/06; G01N11/00; G01N11/08; (IPC1-7): G01N11/04; G01N11/08; B81B3/00; B81B7/02
Domestic Patent References:
| WO2002018785A1 | 2002-03-07 |
Foreign References:
| US6602714B1 | 2003-08-05 | |||
| US20030182991A1 | 2003-10-02 |
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