DE10260310B3 - Micro-structure, to process fluid for reactions and analysis by capillary electrophoresis, has electrodes to give continuous flow with part taken off through branch channel - Google Patents
Micro-structure, to process fluid for reactions and analysis by capillary electrophoresis, has electrodes to give continuous flow with part taken off through branch channel Download PDFInfo
- Publication number
- DE10260310B3 DE10260310B3 DE2002160310 DE10260310A DE10260310B3 DE 10260310 B3 DE10260310 B3 DE 10260310B3 DE 2002160310 DE2002160310 DE 2002160310 DE 10260310 A DE10260310 A DE 10260310A DE 10260310 B3 DE10260310 B3 DE 10260310B3
- Authority
- DE
- Germany
- Prior art keywords
- reservoir
- fluid
- channel
- electrode
- arrangement according
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Expired - Fee Related
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Classifications
-
- G—PHYSICS
- G01—MEASURING; TESTING
- G01N—INVESTIGATING OR ANALYSING MATERIALS BY DETERMINING THEIR CHEMICAL OR PHYSICAL PROPERTIES
- G01N27/00—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means
- G01N27/26—Investigating or analysing materials by the use of electric, electrochemical, or magnetic means by investigating electrochemical variables; by using electrolysis or electrophoresis
- G01N27/416—Systems
- G01N27/447—Systems using electrophoresis
- G01N27/44756—Apparatus specially adapted therefor
- G01N27/44791—Microapparatus
Abstract
Description
Die Erfindung betrifft eine mikrostrukturierte Anordnung zur Behandlung eines Fluids nach dem Oberbegriff des Anspruchs 1. Unter Behandlung sind hier die Durchführung von Reaktionen, insbesondere aber die Analyse, beispielsweise durch Kapillarelektrophorese, zu verstehen.The invention relates to a microstructured arrangement for the treatment of a fluid according to the preamble of claim 1. Treatment includes the implementation of reactions, in particular, however to understand the analysis, for example by capillary electrophoresis.
Eine Anordnung der oben genannten
Art ist beispielsweise aus der
Bisher wurden die Reservoirs diskontinuierlich mit den zu behandelnden Fluiden gefüllt, so wie dies im Laborbetrieb üblich ist.So far, the reservoirs have been discontinuous filled with the fluids to be treated, as is usual in laboratory operation.
Der Erfindung liegt die Aufgabe zugrunde, die mikrostrukturierte Anordnung der eingangs angegebenen Art für eine kontinuierliche Fluidzufuhr zu ertüchtigen.The invention is based, which Microstructured arrangement of the type specified at the beginning for a continuous To increase fluid supply.
Gemäß der Erfindung wird die Aufgabe durch die in Anspruch 1 angegebenen Anordnung gelöst, von der vorteilhafte Weiterbildungen in den Unteransprüchen angegeben sind.According to the invention, the object is achieved by solved the arrangement specified in claim 1, of the advantageous developments in the subclaims are specified.
Bei der erfindungsgemäßen Anordnung wird das Reservoir kontinuierlich von dem Fluid durchströmt, welches dazu beispielsweise kontinuierlich aus einem industriellen oder sonstigen Prozess entnommen und druckgetrieben durch das Reservoir gefördert wird. Die Verweildauer des Fluids von dem Zeitpunkt seiner Entnahme aus dem Prozess bis zu dem Zeitpunkt, an dem ein Teil von ihm zur weiteren Bearbeitung elektrokinetisch aus dem Reservoir abgezweigt und in den Kanal gefördert wird, ist daher bei entsprechend hohem Volumenstrom des durch das Reservoir strömenden Fluids sehr kurz und von dem Zeitpunkt oder den Zeitpunkten der Abzweigung unabhängig. Da die Abzweigung eines Teils des Fluids aus dem Reservoir in den Kanal in Strömungsrichtung gesehen vor der in dem Reservoir angeordneten Elektrode erfolgt, können durch Elektrolyse an der Elektrode entstehende Glasblasen nicht in den Kanal gelangen und diesen oder ein nachfolgendes Reaktions- oder Analysesystem blockieren.In the arrangement according to the invention the reservoir is continuously flowed through by the fluid which for example continuously from an industrial or other process and pressure-driven is conveyed through the reservoir. The dwell time of the fluid from the time of its removal the process up to the point when a part of it for further processing electrokinetically branched from the reservoir and conveyed into the channel, is therefore at a correspondingly high volume flow through the reservoir flowing Fluids very short and from the time or times of the Branch independent. Because the branch of some of the fluid from the reservoir into the Channel in the direction of flow seen in front of the electrode arranged in the reservoir, can Glass bubbles generated by electrolysis on the electrode are not get into the channel and this or a subsequent reaction or block the analysis system.
Vorzugsweise zweigt der Kanal von der Elektrode aus gesehen unter einem Winkel ≥ 90° von dem Reservoir ab, so dass das Fluid, welches das Reservoir durchströmt, nicht in den Kanal gedrückt wird.The channel preferably branches off from seen from the electrode at an angle ≥ 90 ° from the reservoir, so that the fluid flowing through the reservoir is not forced into the channel.
Da für die Behandlung des Fluids jedes Mal nur ein Teil davon aus dem Reservoir in den Kanal abgezweigt wird, ist der Strömungsquerschnitt des Reservoirs größer als der des Kanals. Dabei ist das Reservoir vorzugsweise ebenfalls als Kanal ausgebildet, durch den das Fluid druckgetrieben strömt.As for the treatment of the fluid only a portion of it branched out of the reservoir into the canal each time is the flow cross section of the reservoir larger than that of the channel. The reservoir is preferably also as Channel formed through which the fluid flows pressure-driven.
Bevorzugt ist die Elektrode derart angeordnet, dass sie in den Strömungsweg des Fluids durch das Reservoir hineinragt und von dem Fluid umströmt wird. Das ermöglicht es, die Elektrode als robuste Drahtelektrode auszubilden, die durch Elektrolyse weniger schnell abgebaut wird, als beispielsweise eine Dünnfilmelektrode. Damit die Strömung des Fluids durch die Elektrode nicht gestört wird, kann das Innere des Reservoirs im Bereich der hineinragenden Elektrode aufgeweitet sein, so dass der Strömungsquerschnitt des Reservoirs zumindest annähernd konstant bleibt.The electrode is preferably such arranged that they are in the flow path of the fluid projects through the reservoir and the fluid flows around it. This allows it to form the electrode as a robust wire electrode, which by Electrolysis is degraded less quickly than, for example, one Thin-film electrode. So the flow the fluid is not disturbed by the electrode, the inside of the Reservoirs in the area of the protruding electrode, so the flow cross section of the reservoir at least approximately remains constant.
Der Kanal und das Reservoir können in unterschiedlicher Weise als mikrofluidische Strukturen ausgebildet sein, wobei sie vorzugsweise in Form von grabenförmigen Vertiefungen auf einer Seite einer Platte ausgebildet und durch eine darauf aufliegende Deckelplatte abgedeckt sind.The canal and the reservoir can be in designed in different ways as microfluidic structures be, preferably in the form of trench-shaped depressions on a Formed side of a plate and by a resting on it Cover plate are covered.
Zur weiteren Erläuterung der Erfindung wird im Folgenden auf die Figuren der Zeichnung Bezug genommen; im Einzelnen zeigen:To further explain the invention is in Following referred to the figures of the drawing; in detail demonstrate:
Bei dem gezeigten Ausführungsbeispiel
werden beispielsweise zunächst
ein Puffer-Fluid aus dem Reservoir
Alternativ zu dem gezeigten Ausführungsbeispiel
kann aus dem Reservoir
Bei dem gezeigten Ausführungsbeispiel
sind die Reservoirs
Die
Claims (7)
Priority Applications (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002160310 DE10260310B3 (en) | 2002-12-20 | 2002-12-20 | Micro-structure, to process fluid for reactions and analysis by capillary electrophoresis, has electrodes to give continuous flow with part taken off through branch channel |
PCT/DE2003/004206 WO2004056484A1 (en) | 2002-12-20 | 2003-12-19 | Microstructured arrangement for the treatment of a fluid |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE2002160310 DE10260310B3 (en) | 2002-12-20 | 2002-12-20 | Micro-structure, to process fluid for reactions and analysis by capillary electrophoresis, has electrodes to give continuous flow with part taken off through branch channel |
Publications (1)
Publication Number | Publication Date |
---|---|
DE10260310B3 true DE10260310B3 (en) | 2004-05-06 |
Family
ID=32087373
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
DE2002160310 Expired - Fee Related DE10260310B3 (en) | 2002-12-20 | 2002-12-20 | Micro-structure, to process fluid for reactions and analysis by capillary electrophoresis, has electrodes to give continuous flow with part taken off through branch channel |
Country Status (2)
Country | Link |
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DE (1) | DE10260310B3 (en) |
WO (1) | WO2004056484A1 (en) |
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1038266C2 (en) * | 2010-09-27 | 2012-03-28 | Capilix B V | MEASURING SYSTEM AND METHOD FOR AUTOMATICALLY MEASURING AN ION CONCENTRATION WITH MICROCHIP CAPILLARY ELECTROFORESE. |
CN102764676A (en) * | 2012-07-23 | 2012-11-07 | 西安交通大学 | Microfluidic chip with non-contact light drive-bipolar electrode (BPE) |
Families Citing this family (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004062923A1 (en) * | 2004-12-28 | 2006-07-06 | Hirschmann Laborgeräte GmbH & Co. KG | Device for conveying fluids, method for producing the same and pipette with such a device |
EP3712902B1 (en) * | 2019-03-18 | 2021-05-26 | Siemens Healthcare GmbH | Filter system for local attenuation of x-rays, x-ray apparatus and method for locally modifying the intensity of x-ray radiation |
Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162455A1 (en) * | 1994-08-01 | 2001-12-12 | Lockheed Martin Energy Systems, Inc. | Apparatus and method for performing microfluidic manipultions for chemical analysis and synthesis |
US6337740B1 (en) * | 1996-07-16 | 2002-01-08 | Caliper Technologies Corp. | Microfluidic devices for electrophoretic analysis of materials |
Family Cites Families (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO1996015576A1 (en) * | 1994-11-10 | 1996-05-23 | David Sarnoff Research Center, Inc. | Liquid distribution system |
US5800690A (en) * | 1996-07-03 | 1998-09-01 | Caliper Technologies Corporation | Variable control of electroosmotic and/or electrophoretic forces within a fluid-containing structure via electrical forces |
US20020168780A1 (en) * | 2001-02-09 | 2002-11-14 | Shaorong Liu | Method and apparatus for sample injection in microfabricated devices |
-
2002
- 2002-12-20 DE DE2002160310 patent/DE10260310B3/en not_active Expired - Fee Related
-
2003
- 2003-12-19 WO PCT/DE2003/004206 patent/WO2004056484A1/en active Application Filing
Patent Citations (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1162455A1 (en) * | 1994-08-01 | 2001-12-12 | Lockheed Martin Energy Systems, Inc. | Apparatus and method for performing microfluidic manipultions for chemical analysis and synthesis |
US6337740B1 (en) * | 1996-07-16 | 2002-01-08 | Caliper Technologies Corp. | Microfluidic devices for electrophoretic analysis of materials |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
NL1038266C2 (en) * | 2010-09-27 | 2012-03-28 | Capilix B V | MEASURING SYSTEM AND METHOD FOR AUTOMATICALLY MEASURING AN ION CONCENTRATION WITH MICROCHIP CAPILLARY ELECTROFORESE. |
WO2012044163A1 (en) * | 2010-09-27 | 2012-04-05 | Capilix B.V. | Measuring system and method for autonomous measurement of an ion concentration with microchip capillary electrophoresis |
CN102764676A (en) * | 2012-07-23 | 2012-11-07 | 西安交通大学 | Microfluidic chip with non-contact light drive-bipolar electrode (BPE) |
CN102764676B (en) * | 2012-07-23 | 2014-08-06 | 西安交通大学 | Microfluidic chip with non-contact light drive-bipolar electrode (BPE) |
Also Published As
Publication number | Publication date |
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WO2004056484A1 (en) | 2004-07-08 |
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Legal Events
Date | Code | Title | Description |
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8100 | Publication of the examined application without publication of unexamined application | ||
8364 | No opposition during term of opposition | ||
8339 | Ceased/non-payment of the annual fee |