Abstract: The invention relates to a method of producing a 3-D microscope flow-through cell, consisting of an upper and a lower substrate between which is located a flow channel, an electrode structure penetrating the flow channel and connected with external contacts and with through-connections at the ends of the flow channel for the connection of fluid inlets and outlets. The invention provides a method of producing 3-D microscope micro flow-through cells that are suitable for the reversible assembly of microscope flow-through cells for the ?m-volume range. According to the invention, this is obtained in that a base substrate is first provided with access holes and a flow channel, the flow channel being made of a sandwich of a material non-elastic inside and elastic outside, in that the flow channel for the purpose of a fluid-tight channel closure, is pressed against a second cover glass in order to provide a reversibly sealable flow channel.
Type:
Grant
Filed:
June 15, 2004
Date of Patent:
October 9, 2007
Assignee:
GeSIM Gesellschaft Fur Silizium-Mikrosysteme mbH Rossendorfer Technologiezentrum
Abstract: The invention relates to a method of producing a 3-D microscope flow-through cell, consisting of an upper and a lower substrate between which is located a flow channel, an electrode structure penetrating the flow channel and connected with external contacts and with through-connections at the ends of the flow channel for the connection of fluid inlets and outlets. The invention provides a method of producing 3-D microscope micro flow-through cells that are suitable for the reversible assembly of microscope flow-through cells for the &mgr;m-volume range. According to the invention, this is obtained in that a base substrate is first provided with access holes and a flow channel, the flow channel being made of a sandwich of a material non-elastic inside and elastic outside, in that the flow channel for the purpose of a fluid-tight channel closure, is pressed against a second cover glass in order to provide a reversibly sealable flow channel.
Type:
Application
Filed:
June 15, 2004
Publication date:
December 16, 2004
Applicant:
GeSIM GESELLSCHAFT FUR SILIZIUM-MIKROSYSTEME mbH
Abstract: A microejector pump for generating microdrops includes at least one pump chamber configured in a silicon chip and a piezoelectrically actuable silicon membrane arranged over the pump chamber. The pump chamber is connected to at least one supply line as well as a discharge line provided with an ejection orifice. A glass chip closes off at least the pump chamber from the silicon membrane. The microejector pump can also include an integral heater and controller.
Type:
Grant
Filed:
June 10, 1999
Date of Patent:
January 30, 2001
Assignee:
Gesim Gesellschaft fur Silizium-Mikrosysteme mbH
Inventors:
Steffen Howitz, Thomas Wegener, Mario Burger, Thomas Gehring