DE19500660A1 - Micromanipulator for e.g. molecules, cells or viruses - Google Patents
Micromanipulator for e.g. molecules, cells or virusesInfo
- Publication number
- DE19500660A1 DE19500660A1 DE19500660A DE19500660A DE19500660A1 DE 19500660 A1 DE19500660 A1 DE 19500660A1 DE 19500660 A DE19500660 A DE 19500660A DE 19500660 A DE19500660 A DE 19500660A DE 19500660 A1 DE19500660 A1 DE 19500660A1
- Authority
- DE
- Germany
- Prior art keywords
- arrangement according
- frequency alternating
- particles
- alternating fields
- microelectrode
- 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.)
- Granted
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12N—MICROORGANISMS OR ENZYMES; COMPOSITIONS THEREOF; PROPAGATING, PRESERVING, OR MAINTAINING MICROORGANISMS; MUTATION OR GENETIC ENGINEERING; CULTURE MEDIA
- C12N13/00—Treatment of microorganisms or enzymes with electrical or wave energy, e.g. magnetism, sonic waves
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B03—SEPARATION OF SOLID MATERIALS USING LIQUIDS OR USING PNEUMATIC TABLES OR JIGS; MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C—MAGNETIC OR ELECTROSTATIC SEPARATION OF SOLID MATERIALS FROM SOLID MATERIALS OR FLUIDS; SEPARATION BY HIGH-VOLTAGE ELECTRIC FIELDS
- B03C5/00—Separating dispersed particles from liquids by electrostatic effect
- B03C5/02—Separators
- B03C5/022—Non-uniform field separators
- B03C5/028—Non-uniform field separators using travelling electric fields, i.e. travelling wave dielectrophoresis [TWD]
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M33/00—Means for introduction, transport, positioning, extraction, harvesting, peeling or sampling of biological material in or from the apparatus
-
- C—CHEMISTRY; METALLURGY
- C12—BIOCHEMISTRY; BEER; SPIRITS; WINE; VINEGAR; MICROBIOLOGY; ENZYMOLOGY; MUTATION OR GENETIC ENGINEERING
- C12M—APPARATUS FOR ENZYMOLOGY OR MICROBIOLOGY; APPARATUS FOR CULTURING MICROORGANISMS FOR PRODUCING BIOMASS, FOR GROWING CELLS OR FOR OBTAINING FERMENTATION OR METABOLIC PRODUCTS, i.e. BIOREACTORS OR FERMENTERS
- C12M47/00—Means for after-treatment of the produced biomass or of the fermentation or metabolic products, e.g. storage of biomass
- C12M47/02—Separating microorganisms from the culture medium; Concentration of biomass
Landscapes
- Life Sciences & Earth Sciences (AREA)
- Health & Medical Sciences (AREA)
- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Wood Science & Technology (AREA)
- Organic Chemistry (AREA)
- Bioinformatics & Cheminformatics (AREA)
- Zoology (AREA)
- Genetics & Genomics (AREA)
- Biotechnology (AREA)
- General Health & Medical Sciences (AREA)
- Microbiology (AREA)
- Biochemistry (AREA)
- General Engineering & Computer Science (AREA)
- Biomedical Technology (AREA)
- Sustainable Development (AREA)
- Molecular Biology (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Electrochemistry (AREA)
- Apparatus Associated With Microorganisms And Enzymes (AREA)
Abstract
Description
Die vorliegende Erfindung betrifft eine Vorrichtung und ein Verfahren zur Manipulation, Bewegung, Sammlung, Separation, Abstoßung, Formung und Aggregatbildung mikroskopisch kleiner Partikeln in einer Ultramikroelektrodenanordnung durch HF- Wechselfelder.The present invention relates to a device and a method for manipulation, Movement, collection, separation, repulsion, shaping and aggregation microscopic particles in an ultramicroelectrode arrangement by HF Alternating fields.
Dem Stand der Technik entsprechen Anordnungen, die hochfrequente elektrische Signale an mindestens 2 Elektroden benutzen, um Mikropartikeln und Zellen in flüssigen Medien zu sammeln, zu separieren oder zu Aggregaten zusammenzufügen (POHL, Dielectrophoresis, Cambridge University Press, 1978). Die Kräfte, die diese Teilchenbewegungen bewirken, entstehen aus der Wechselwirkung der Oberflächenpolarisationsladungen mit dem zwischen den Elektroden erzeugten Feld. Entsprechend der Polarität unterscheidet man anziehende (positive Dielektrophorese) und abstoßende (negative Dielektrophorese) Kräfte (POHL, ebenda). In der Regel werden 2 oder mehr Elektroden mit einem Generatorausgang verbunden, so daß zumindest auch 2 Zuleitungen und bei Multielektrodenanordnungen elektrische Zwischenverknüpfungen erforderlich sind. Die elektrisch induzierten Kräfte sind um so wirksamer, je stärkere Inhomogenitäten der elektrischen Felder in den Mikropartikelsuspensionen erzeugt werden können. Das kann besonders gut erreicht werden, wenn ultraminiaturisierte Elektroden, insbesondere solche, die mit den Methoden der Halbleiterstrukturierungstechnologien hergestellt werden, benutzt werden (SCHNELLE, TH. et al., Biochim. Biophys. Acta 1157 (1993) 127-140, FUHR, G. et al., Sensors & Actuators A, 41-42 (1994) 230-239). Für viele Aufgaben, z. B. Implantation oder in schwierigen Umgebungslösungen (Sensoren der Umwelttechnik) werden die Vorteile der Miniaturisierung durch die kaum zu miniaturisierenden elektrischen Zuleitungskabel wieder aufgehoben.The prior art corresponds to arrangements that use high-frequency electrical Use signals on at least 2 electrodes to collect microparticles and cells collect, separate or combine liquid media into aggregates (POHL, Dielectrophoresis, Cambridge University Press, 1978). The powers this Particle movements result from the interaction of the Surface polarization charges with the field generated between the electrodes. A distinction is made according to the polarity of attractive (positive dielectrophoresis) and repulsive (negative dielectrophoresis) forces (POHL, ibid.). Usually 2 or more electrodes are connected to a generator output, so that at least also 2 supply lines and electrical in the case of multi-electrode arrangements Interlinkages are required. The electrically induced forces are all the more more effective, the stronger inhomogeneities of the electric fields in the Microparticle suspensions can be generated. This can be achieved particularly well when ultraminiaturized electrodes, especially those with the Methods of semiconductor structuring technologies are used (SCHNELLE, TH. et al., Biochim. Biophys. Acta 1157 (1993) 127-140, FUHR, G. et al., Sensors & Actuators A, 41-42 (1994) 230-239). For many tasks, e.g. B. Implantation or in difficult environmental solutions (sensors of environmental technology) are the advantages of miniaturization due to the hardly miniaturized electrical supply cable removed again.
Einen Ausweg bieten Sender- und Empfängersysteme, wie sie von KÜPPERS & ZIMMERMANN, FEBS 1009, 323-329 (1983) bzw. KÜPPERS, DIETRICH und ZIMMERMANN, Z. Naturforsch. 39c, 973-980 (1984) beschrieben wurden. Hier wird der Generator an eine Antenne ausgekoppelt und die eigentliche Elektrodenanordnung wird an eine Empfangsantenne angeschlossen. Die Autoren haben mit dieser Anordnung versucht zu beweisen, daß Zellen im Urozean durch in Erzblöcken aufgenommene elektrische Wellen nach Blitzeinschlag fusionieren können. Der Nachteil der Elektrodenverknüpfung und des mehrpoligen Anschlusses der Mikroelektrodenanordnung an die Empfangsantenne bleibt auch bei dieser Anordnung erhalten. Hinzu kommt, daß eine Anpassung der Antennen an die Frequenzen der elektromagnetischen Wellen zusätzlichen Aufwand und feste Elektrodengeometrien erfordern. Frequenzen im kHz- und niederen MHz-Bereich lassen sich aufgrund ihrer Wellenlänge (einige 100 m bis zu einigen 10 m) nur sehr uneffektiv übertragen.A way out is offered by transmitter and receiver systems such as those from KÜPPERS & ZIMMERMANN, FEBS 1009, 323-329 (1983) or KÜPPERS, DIETRICH and ZIMMERMANN, Z. Naturforsch. 39c, 973-980 (1984). Here will the generator is coupled to an antenna and the actual electrode arrangement is connected to a receiving antenna. The authors have with this The arrangement tries to prove that cells in the Urozean pass through in ore blocks recorded electrical waves can fuse after lightning. Of the Disadvantage of the electrode linkage and the multi-pole connection of the Microelectrode arrangement on the receiving antenna also remains in this arrangement receive. In addition, an adaptation of the antennas to the frequencies of the electromagnetic waves additional effort and fixed electrode geometries require. Frequencies in the kHz and lower MHz range can be Wavelength (a few 100 m to a few 10 m) transmitted very ineffectively.
Durch die immer kleiner werdenden Chips, die zunehmend für Zellmanipulationszwecke, aber auch zum Freihalten von kleinen Oberflächen von Sensoren eingesetzt werden, besteht ein wachsender Bedarf, die Frage der elektrischen Zuführungskabel zu vereinfachen.Due to the ever smaller chips that are increasingly for Cell manipulation purposes, but also to keep small surfaces free of Sensors are used, there is a growing need, the question of simplify electrical supply cables.
Aufgabe der vorliegenden Erfindung ist es, ein Verfahren und eine Vorrichtung zu entwickeln, die starke Kräfte in Ultramikroelektrodenanordnungen erzeugen, dies allerdings mit nur einer elektrischen Zuführung und ohne Sender-Empfänger- Anpassung. Die Anordnung soll geeignet sein, die üblicherweise verwendeten Multielektrodenanordnungen zu betreiben und auf diesem Weg über dielektrophoretische Kräfte Mikropartikeln zu separieren, zu bewegen oder zu Aggregaten zu formieren. Diese Aufgabe wird durch ein Verfahren und eine Vorrichtung gemäß der unabhängigen Ansprüche gelöst. Dabei wird die Ultramikroelektrodenanordnung als Spitze einer Sendeantenne benutzt, so daß das System ohne kabelförmigen Erdanschluß mit Frequenzen im kHz- und MHz-Bereich betrieben werden kann.The object of the present invention is to provide a method and an apparatus develop that generate strong forces in ultramicroelectrode arrays, this however with only one electrical supply and without a transceiver Adaptation. The arrangement is said to be suitable for those commonly used To operate multi-electrode arrangements and in this way over dielectrophoretic forces to separate, move or close microparticles Form aggregates. This task is accomplished through a process and a Device solved according to the independent claims. The Ultramicroelectrode arrangement used as the tip of a transmission antenna, so that System without cable-shaped earth connection with frequencies in the kHz and MHz range can be operated.
Die Vorrichtung und das Verfahren umfassen die Bewegung mikroskopischer Teilchen, ihre Separation, Formung zu Aggregaten, Freihaltung von elektrodennahen Bereichen und das Trapping von Mikropartikeln. Unter Mikropartikeln werden auch Moleküle, Zellen und Viren verstanden.The device and method include the movement of microscopic particles, their separation, forming into aggregates, keeping areas close to the electrodes free and trapping microparticles. Microparticles also include molecules Cells and viruses understood.
Vorteilhafte Ausführungsformen ergeben sich aus dem Anschluß nur einer Elektrode aus einem Multielektrodenarray oder dem Zusammenschluß mehrerer Elektroden an nur eine Zuleitung. Die extreme Miniaturisierung der Elektroden (Mikrometer- oder sogar Submikrometerabmessungen in mindestens 2 Dimensionen) führt zu einer starken Bündelung der Feldlinien an den Elektrodenenden, die die Antennenspitze bilden. Neu ist, daß kein Erdanschluß oder eine Rückführung zur Antenne oder dem Generator notwendig ist. Da die anderen, nicht angeschlossenen Elektroden je nach Anordnung eine virtuelle Masse bilden, die auf einem vom Generator unterschiedlichen Potential liegen kann, lassen sich stark inhomogene Felder in analoger Weise nutzen, wie in den konventionellen Systemen. Es ist offensichtlich, daß auch kein Sender-Empfänger-Prinzip angewendet wird, da in diesem Sinne gar kein Empfänger existiert. Demzufolge ist auch eine Anpassung der Antenne in weiten Bereichen unkritisch. Die Zuführung zur Ultramikroelektrodenanordnung muß deshalb auch nicht einer konventionellen Elektrode entsprechen, sondern kann eine normale, auch isolierte Kabelzuführung sein.Advantageous embodiments result from the connection of only one electrode from a multi-electrode array or the combination of several electrodes only one supply line. The extreme miniaturization of the electrodes (micrometer or even submicrometer dimensions in at least 2 dimensions) leads to one strong bundling of the field lines at the electrode ends, which the antenna tip form. What is new is that there is no earth connection or a return to the antenna or the Generator is necessary. Since the other, not connected electrodes depending on Arrangement form a virtual mass based on one from the generator different potential, there are strongly inhomogeneous fields in use the same way as in conventional systems. It is obvious that also no sender-receiver principle is used, since in this sense none at all Receiver exists. As a result, an adaptation of the antenna is also wide Areas uncritical. The supply to the ultramicroelectrode arrangement must therefore also do not correspond to a conventional electrode, but can be a normal, also be insulated cable feed.
Beschreibung der Figuren:
In Fig. 1 ist die Vorrichtung als Blockschaltbild skizziert. Ein Generator (11) wird über
ein Kabel (12) an eine Ultramikroelektrodenstruktur (13) angeschlossen. Diese kann
aus vielen Elektroden (14, 15) auf einem Halbleiter- oder Glasträger (13) bestehen,
wobei nur eine (oder einige) Elektrode(n) (15) angeschlossen ist (sind). Das
Ultramikroelektrodensystem bildet somit die Spitze der Antenne, so daß
elektromagnetische Wellen über sie stark inhomogen in mikroskopischen Dimensionen
ausgekoppelt werden können. Verwendet man nun physiologische Medien (z. B.
Zellkulturmedien), so lassen sich die Zellen über abstoßende Kräfte von den
Elektroden fernhalten. Die Elektroden bleiben mikropartikelfrei, was für medizinisch
technische, biotechnologische und pharmakologische Testsysteme und Sensoren von
Interesse ist.Description of the figures:
In Fig. 1 the device is outlined as a block diagram. A generator ( 11 ) is connected to an ultramicroelectrode structure ( 13 ) via a cable ( 12 ). This can consist of many electrodes ( 14 , 15 ) on a semiconductor or glass carrier ( 13 ), only one (or some) electrode (s) ( 15 ) being connected. The ultramicroelectrode system thus forms the tip of the antenna, so that electromagnetic waves can be coupled out inhomogeneously in microscopic dimensions. If physiological media (e.g. cell culture media) are used, the cells can be kept away from the electrodes by repulsive forces. The electrodes remain microparticle-free, which is of interest for medical technical, biotechnological and pharmacological test systems and sensors.
Fig. 2 zeigt das Bild einer 4-Elektrodenanordnung bei Auftreten negativer Dielektrophorese (Abstoßung) von Zellen (23) von den Elektroden (21, 22). Auch hier ist nur die Elektrode (21) mit dem Generator verbunden und bildet die Antennenspitze. FIG. 2 shows the image of a 4-electrode arrangement when negative dielectrophoresis (rejection) of cells ( 23 ) from the electrodes ( 21 , 22 ) occurs. Here too, only the electrode ( 21 ) is connected to the generator and forms the antenna tip.
Fig. 3 zeigt die mikroskopische Spitze (31) einer Antenne, eingetaucht in eine Partikelsuspension (32). Auch hier treten Felddivergenzen auf, die zur Abstoßung (unter anderen Randbedingungen auch zum Anziehen von Partikeln) genutzt werden kann. Die typischen Abmessungen des abgebildeten Systems liegen bei einigen Zehn Mikrometern oder darunter (bis in den nm-Bereich). Fig. 3 shows the microscopic tip ( 31 ) of an antenna immersed in a particle suspension ( 32 ). Field divergences also occur here, which can be used for repulsion (under other boundary conditions also for attracting particles). The typical dimensions of the system shown are a few tens of micrometers or less (down to the nm range).
Claims (17)
- - Einbringen der Partikel in ein Umhüllungsmedium,
- - Einführung mindestens einer Antenne mindestens teilweise in das Umhüllungs medium mit den Partikeln und
- - Zuführung eines HF-Signals an die mindestens eine Antenne.
- Introduction of the particles into a coating medium,
- - Introduction of at least one antenna at least partially in the coating medium with the particles and
- - Feeding an RF signal to the at least one antenna.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19500660A DE19500660B4 (en) | 1994-12-10 | 1995-01-12 | Device and method for manipulating microscopic particles and their use |
Applications Claiming Priority (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE9420739 | 1994-12-10 | ||
| DEG9420739.9 | 1994-12-10 | ||
| DE19500660A DE19500660B4 (en) | 1994-12-10 | 1995-01-12 | Device and method for manipulating microscopic particles and their use |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE19500660A1 true DE19500660A1 (en) | 1996-06-13 |
| DE19500660B4 DE19500660B4 (en) | 2007-12-27 |
Family
ID=6917934
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE19500660A Expired - Fee Related DE19500660B4 (en) | 1994-12-10 | 1995-01-12 | Device and method for manipulating microscopic particles and their use |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE19500660B4 (en) |
Cited By (18)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE19653659C1 (en) * | 1996-12-20 | 1998-05-20 | Guenter Prof Dr Fuhr | Electrode arrangement for field cages |
| WO1998041644A1 (en) * | 1997-03-18 | 1998-09-24 | Introgene B.V. | Methods and compositions for genetically modifying primate bone marrow cells |
| WO2000000293A1 (en) * | 1998-06-26 | 2000-01-06 | Evotec Biosystems Ag | Electrode arrangement for generating functional field barriers in microsystems |
| WO1998028604A3 (en) * | 1996-12-20 | 2000-07-27 | Evotec Biosystems Ag | Method and device for micro particle positioning in field cages |
| DE10059152A1 (en) * | 2000-11-29 | 2002-06-20 | Evotec Ag | Microsystem for the dielectric and optical manipulation of particles |
| EP1245669A1 (en) * | 2001-03-27 | 2002-10-02 | Eppendorf Ag | Chamber for the treatment of cells contained in a suspension with an electric field |
| WO2007058804A1 (en) * | 2005-11-18 | 2007-05-24 | President And Fellows Of Harvard College | Dielectrophoretic tweezers apparatus and methods |
| WO2007049120A3 (en) * | 2005-10-24 | 2007-10-04 | Silicon Biosystems Spa | Method and apparatus for manipulation of particles in conductive solutions |
| US8021532B2 (en) | 2008-02-26 | 2011-09-20 | President And Fellows Of Harvard College | Dielectrophoretic tweezers apparatus and methods |
| US8388823B2 (en) | 2004-07-07 | 2013-03-05 | Silicon Biosystems S.P.A. | Method and apparatus for the separation and quantification of particles |
| US8641880B2 (en) | 2005-07-19 | 2014-02-04 | Silicon Biosystems S.P.A. | Method and apparatus for the manipulation and/or the detection of particles |
| US8679856B2 (en) | 2006-03-27 | 2014-03-25 | Silicon Biosystems S.P.A. | Method and apparatus for the processing and/or analysis and/or selection of particles, in particular biological particles |
| US8679315B2 (en) | 2005-10-26 | 2014-03-25 | Silicon Biosystems S.P.A. | Method and apparatus for characterizing and counting particles, in particular, biological particles |
| US9192943B2 (en) | 2009-03-17 | 2015-11-24 | Silicon Biosystems S.P.A. | Microfluidic device for isolation of cells |
| US9310287B2 (en) | 2007-10-29 | 2016-04-12 | Silicon Biosystems S.P.A. | Method and apparatus for the identification and handling of particles |
| US9950322B2 (en) | 2010-12-22 | 2018-04-24 | Menarini Silicon Biosystems S.P.A. | Microfluidic device for the manipulation of particles |
| DE112019004459T5 (en) | 2018-09-05 | 2021-07-15 | Adana Bilim Ve Teknoloji Universitesi | ENRICHMENT OF SAMPLES BY MEANS OF MAGNETIC PARTICLES IN MICROCHANNELS |
| US11921028B2 (en) | 2011-10-28 | 2024-03-05 | Menarini Silicon Biosystems S.P.A. | Method and device for optical analysis of particles at low temperatures |
Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US10895575B2 (en) | 2008-11-04 | 2021-01-19 | Menarini Silicon Biosystems S.P.A. | Method for identification, selection and analysis of tumour cells |
| IT1391619B1 (en) | 2008-11-04 | 2012-01-11 | Silicon Biosystems Spa | METHOD FOR THE IDENTIFICATION, SELECTION AND ANALYSIS OF TUMOR CELLS |
| ITBO20110766A1 (en) | 2011-12-28 | 2013-06-29 | Silicon Biosystems Spa | DEVICES, EQUIPMENT, KITS AND METHOD FOR THE TREATMENT OF A BIOLOGICAL SAMPLE |
Family Cites Families (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE4434883A1 (en) * | 1994-02-24 | 1995-08-31 | Stefan Fiedler | Forming microparticles in electrical field cages |
-
1995
- 1995-01-12 DE DE19500660A patent/DE19500660B4/en not_active Expired - Fee Related
Cited By (30)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US6610188B1 (en) | 1996-12-20 | 2003-08-26 | Evotec Biosystems Ag | Electrode array for field cages |
| WO1998028405A1 (en) * | 1996-12-20 | 1998-07-02 | Evotec Biosystems Ag | Electrode array for field cages |
| WO1998028604A3 (en) * | 1996-12-20 | 2000-07-27 | Evotec Biosystems Ag | Method and device for micro particle positioning in field cages |
| DE19653659C1 (en) * | 1996-12-20 | 1998-05-20 | Guenter Prof Dr Fuhr | Electrode arrangement for field cages |
| US6440285B1 (en) | 1996-12-20 | 2002-08-27 | Evotec Oai Ag | Method and device for micro particles positioning in field cages |
| WO1998041644A1 (en) * | 1997-03-18 | 1998-09-24 | Introgene B.V. | Methods and compositions for genetically modifying primate bone marrow cells |
| WO2000000293A1 (en) * | 1998-06-26 | 2000-01-06 | Evotec Biosystems Ag | Electrode arrangement for generating functional field barriers in microsystems |
| US7070684B1 (en) | 1998-06-26 | 2006-07-04 | Evotec Technologies Gmbh | Electrode arrangement for generating functional field barriers in microsystems |
| DE10059152C2 (en) * | 2000-11-29 | 2003-03-27 | Evotec Ag | Microsystem for the dielectric and optical manipulation of particles |
| US7276207B2 (en) | 2000-11-29 | 2007-10-02 | Evotec Technologies Gmbh | Microsystem for the dielectric and optical manipulation of particles |
| DE10059152A1 (en) * | 2000-11-29 | 2002-06-20 | Evotec Ag | Microsystem for the dielectric and optical manipulation of particles |
| US7008787B2 (en) * | 2001-03-27 | 2006-03-07 | Eppendorf Ag | Chamber for the treating cells contained in a suspension in an electric field |
| EP1245669A1 (en) * | 2001-03-27 | 2002-10-02 | Eppendorf Ag | Chamber for the treatment of cells contained in a suspension with an electric field |
| US8388823B2 (en) | 2004-07-07 | 2013-03-05 | Silicon Biosystems S.P.A. | Method and apparatus for the separation and quantification of particles |
| US8685217B2 (en) | 2004-07-07 | 2014-04-01 | Silicon Biosystems S.P.A. | Method and apparatus for the separation and quantification of particles |
| US8641880B2 (en) | 2005-07-19 | 2014-02-04 | Silicon Biosystems S.P.A. | Method and apparatus for the manipulation and/or the detection of particles |
| WO2007049120A3 (en) * | 2005-10-24 | 2007-10-04 | Silicon Biosystems Spa | Method and apparatus for manipulation of particles in conductive solutions |
| US8349160B2 (en) | 2005-10-24 | 2013-01-08 | Silicon Biosystems S.P.A. | Method and apparatus for the manipulation of particles in conductive solutions |
| US8679315B2 (en) | 2005-10-26 | 2014-03-25 | Silicon Biosystems S.P.A. | Method and apparatus for characterizing and counting particles, in particular, biological particles |
| US8262885B2 (en) | 2005-11-18 | 2012-09-11 | President And Fellows Of Harvard College | Dielectrophoretic tweezers apparatus and methods |
| WO2007058804A1 (en) * | 2005-11-18 | 2007-05-24 | President And Fellows Of Harvard College | Dielectrophoretic tweezers apparatus and methods |
| US10092904B2 (en) | 2006-03-27 | 2018-10-09 | Menarini Silicon Biosystems S.P.A. | Method and apparatus for the processing and/or analysis and/or selection of particles, in particular biological particles |
| US8679856B2 (en) | 2006-03-27 | 2014-03-25 | Silicon Biosystems S.P.A. | Method and apparatus for the processing and/or analysis and/or selection of particles, in particular biological particles |
| US9581528B2 (en) | 2006-03-27 | 2017-02-28 | Menarini Silicon Biosystems S.P.A. | Method and apparatus for the processing and/or analysis and/or selection of particles, in particular, biological particles |
| US9310287B2 (en) | 2007-10-29 | 2016-04-12 | Silicon Biosystems S.P.A. | Method and apparatus for the identification and handling of particles |
| US8021532B2 (en) | 2008-02-26 | 2011-09-20 | President And Fellows Of Harvard College | Dielectrophoretic tweezers apparatus and methods |
| US9192943B2 (en) | 2009-03-17 | 2015-11-24 | Silicon Biosystems S.P.A. | Microfluidic device for isolation of cells |
| US9950322B2 (en) | 2010-12-22 | 2018-04-24 | Menarini Silicon Biosystems S.P.A. | Microfluidic device for the manipulation of particles |
| US11921028B2 (en) | 2011-10-28 | 2024-03-05 | Menarini Silicon Biosystems S.P.A. | Method and device for optical analysis of particles at low temperatures |
| DE112019004459T5 (en) | 2018-09-05 | 2021-07-15 | Adana Bilim Ve Teknoloji Universitesi | ENRICHMENT OF SAMPLES BY MEANS OF MAGNETIC PARTICLES IN MICROCHANNELS |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19500660B4 (en) | 2007-12-27 |
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