Abstract:
A micro-fluidic pump (22) has a pulsating micro chamber (46) which includes a walled chamber (50). The walled chamber further includes at least one pulsating portion (52) actuable to pulse and change an interior volume of th e walled chamber. An actuating mechanism (10) peristaltically moves fluids through a micro conduit (56). The actuating mechanism includes a closed pock et (11) adjacent to the conduit. A flexible mechanism (18) defines a portion of a wall of the micro conduit (56). An expanding mechanism (14) which is understood to be a fluid is disposed within the pocket (11) for expanding a volume of the pocket and thereby flexing the flexible mechanism (18) into th e micro conduit thereby changing the volume of the conduit (56).
Abstract:
According to the present invention, there is provided a micro-fluidic sensor system (6) including a micro-conduit (56) for carrying fluid therethrough having a flexible wall portion (18), at least one micro-fluidic actuator having a closed cavity, flexible mechanism defining a wall of the cavity (11 ) and flexible wall portion (18) of the micro-conduit for deflecting upon an application of pressure thereto, and expanding mechanism (14) disposed in th e cavity for selectively expanding the cavity and thereby selectively flexing said expanding mechanism, and sensor mechanism in fluid communication with t he micro-conduit for sensing the presence or absence of molecules. The present invention further provides for a micro-fluidic system for moving micro-fluid amounts including a micro-conduit and at least one micro-fluidic actuator in fluid communication with the micro-conduit.
Abstract:
On-chip closed loop control circuitry comprising an amperometric sensing system, a potentiometric sensing system, at least one differentiator connected to said amperometric and potentiometric sensing systems, at least one integrator connected to said amperometric and potentiometric sensing systems, and noise reduction means. A recording device and chip for measuring neurochemical and neuroelectrical activity in tissue culture having at least one potentiometric electrode, at least one amperometric electrode interconnected to the potentiometric electrode, wherein the electrodes are located on the same device, and circuitry for eliminating frequency noise. Also provided is software for controlling the chip.
Abstract:
A micro-device for testing for agents in a fluid including at least one micro-chamber and a sensor for sensing agents in the fluid, the sensor is located within the micro-chamber. A micro-device for testing for agents in a fluid including a micro-chamber and a micro-fluidic system, the micro-fluidic system is used for pumping the fluid into the micro-chamber. A micro-device for testing for agents in a fluid including a miniature micro-chamber for testing for agents in a small amount of fluid.
Abstract:
Eine Vorrichtung zum Ermitteln einer Wasserstoffkonzentration oder Wasserstoffgemischkonzentration, weist auf: eine elektrische Leiteranordnung (2, 200, 300), die derart ausgestaltet ist, dass sie mit dem Wasserstoff oder Wasserstoffgemisch in Kontakt bringbar ist, und als Spannungsteiler mit zwei Elementen (21, 221, 321, 22, 222, 322) ausgebildet ist, wobei das erste Element ein erster Leiter (21, 221, 321 ) ist, der zumindest in einem stromführenden Zustand einen Widerstandswert aufweist, der zu dem zweiten Elements (22, 222, 322) unterschiedlich ist, eine Messbrücke (4, 240, 340), mit zwei parallel geschalteten Spannungsteilern, wobei einer der Spannungsteiler durch die elektrische Leiteranordnung (2, 200, 300) gebildet wird, eine Ansteuereinheit (6) zum Anlegen einer Wechselspannung (U0) and die Messbrücke (4, 240, 340), eine Spannungserfasseinheit (8) zum Erfassen einer Brückenspannung (üb), und eine Auswerteeinheit (10), die so konfiguriert ist, dass sie die Wärmeleitfähigkeit des Wasserstoffs oder Wasserstoffgemisches durch Auswerten der Brückenspannung (Ub) unter Verwendung der 3-Omega- Methode ermittelt.