Title (en)

Microfluidic system for controlled displacement of a liquid

Title (de)

Mikrofluidisches System zur kontrolierten Verdrängung eines Flüssigkeits

Title (fr)

Dispositif microfluidique de déplacement contrôlé de liquide

Publication

EP 2143949 A3 20150708 (FR)

Application

EP 09164657 A 20090706

Priority

FR 0854597 A 20080707

Abstract (en)

[origin: EP2143949A2] The device has a microchannel (10) i.e. microtube, partially filled with electrically conductive liquid (F1) and dielectric fluid (F2) e.g. silicone oil. The dielectric fluid is situated in downstream of the liquid in a longitudinal direction of the microchannel, and forms interfaces (I1) and another interface with the liquid and the fluid, respectively. A displacement unit displaces the liquid by electrowetting. A control system is provided with a capacitive measurement device to control displacement of the liquid based on a measured capacity value.

IPC 8 full level

B01L 3/00 (2006.01); F04B 19/00 (2006.01)

CPC (source: EP US)

B01L 3/50273 (2013.01 - EP US); B01L 3/502784 (2013.01 - EP US); B01L 3/502792 (2013.01 - EP US); F04B 19/006 (2013.01 - EP US); B01L 2200/10 (2013.01 - EP US); B01L 2300/0645 (2013.01 - EP US); B01L 2300/0819 (2013.01 - EP US); B01L 2400/0421 (2013.01 - EP US); B01L 2400/0427 (2013.01 - EP US)

Citation (search report)

• [YDA] US 2003006140 A1 20030109 - VACCA GIACOMO [US], et al
• [Y] WO 2008055256 A2 20080508 - UNIV CALIFORNIA [US], et al
• [A] WO 2006098700 A1 20060921 - UNIV NANYANG [SG], et al
• [A] US 2002125138 A1 20020912 - MEDORO GIANNI [IT]
• [I] REN H ET AL: "Automated on-chip droplet dispensing with volume control by electro-wetting actuation and capacitance metering", SENSORS AND ACTUATORS B: CHEMICAL: INTERNATIONAL JOURNAL DEVOTED TO RESEARCH AND DEVELOPMENT OF PHYSICAL AND CHEMICAL TRANSDUCERS, ELSEVIER S.A, CH, vol. 98, no. 2-3, 15 March 2004 (2004-03-15), pages 319 - 327, XP004493694, ISSN: 0925-4005, DOI: 10.1016/J.SNB.2003.09.030

Designated contracting state (EPC)

AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HR HU IE IS IT LI LT LU LV MC MK MT NL NO PL PT RO SE SI SK SM TR

Designated extension state (EPC)

AL BA RS

DOCDB simple family (publication)

EP 2143949 A2 20100113; EP 2143949 A3 20150708; FR 2933316 A1 20100108; FR 2933316 B1 20100910; US 2010000866 A1 20100107; US 8252159 B2 20120828

DOCDB simple family (application)

EP 09164657 A 20090706; FR 0854597 A 20080707; US 49785309 A 20090706