EP 2078958 A1 20090715 - A reconfigurable microfluidic filter based on eletric fields
Title (en)
A reconfigurable microfluidic filter based on eletric fields
Title (de)
Auf elektrischen Feldern basierendes rekonfigurierbares mikrofluidisches Filter
Title (fr)
Filtre microfluidique reconfigurable basé sur des champs électriques
Publication
Application
Priority
EP 07119287 A 20071025
Abstract (en)
A filter for filtering particles in a fluid, suitable for lab- on-chip microsystems, involves replacing traditional microfluidic filters and traps by reconfigurable devices based on e.g. dielectrophoresis. The filter has a channel (40) for the fluid, and electrodes (50, 60) and drive circuitry (70) arranged to create an electric field pattern in the fluid in the channel, to attract or repel the particles so as to selectively block particles of a given size, and allow particles of another size to pass. By forming the filter using electric fields, rather than using physical structures, it can be much easier to control or move or change the pattern of the filter. The filter can be used for sample preparation, isolation of cells for example from blood, analyte concentration and sorting of cells or functionalized microspheres on the basis of their size.
IPC 8 full level
G01N 27/26 (2006.01); B03C 5/02 (2006.01)
CPC (source: EP)
B03C 5/005 (2013.01); B03C 5/026 (2013.01); B03C 5/028 (2013.01)
Citation (search report)
- [AD] US 5814200 A 19980929 - PETHIG RONALD [GB], et al
- [A] WO 9508640 A1 19950330 - DU PONT [US]
- [A] US 2004226819 A1 20041118 - TALARY MARK STUART [GB], et al
- [A] WO 03001193 A1 20030103 - SANDIA NAT LAB [US], et al
- [A] US 2007125941 A1 20070607 - LEE ABRAHAM P [US], et al
- [A] US 2004065599 A1 20040408 - LAL AMIT [US], et al
Designated contracting state (EPC)
AT BE BG CH CY CZ DE DK EE ES FI FR GB GR HU IE IS IT LI LT LU LV MC MT NL PL PT RO SE SI SK TR
Designated extension state (EPC)
AL BA HR MK RS
DOCDB simple family (publication)
DOCDB simple family (application)
IB 2008054340 W 20081022; EP 07119287 A 20071025