Manipulating micron scale items

Number of patents in Portfolio can not be more than 2000

United States of America Patent

PATENT NO 6686207
APP PUB NO 20030077837A1
SERIAL NO

09976835

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ATTORNEY / AGENT: (SPONSORED)

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Abstract

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Micron scale dielectric items are manipulated by methods and apparatus taking advantage of spatially non-uniform field. Such fields give rise to a force on dielectric items, directing them generally toward regions of more concentrated field. The electrode may be elongated, either unitary, with a generally planar counter electrode, or dual, such as parallel pins, loops or plates. If dual, particles are generally attracted to regions of high field concentration, including tips, edges and spaces between electrode conductors. Items can be granular, threadlike, or sheets, and microelectronic parts and other shapes. Items can also be collected directly into a recess of a pharmaceutical material delivery microchip, with a conductive membrane of the microchip acting as a manipulating electrode. Items are attracted without regard to their surface charge, or the polarity of the field, which can be AC or DC. Charging, or knowing the charge of items to be manipulated is not necessary. The amount of material collected can be precisely controlled by varying parameters of collection, such as distance between the electrode and the items, distance between dual conductors, size (diameter, length) of the conductors, any dielectric sheathing thereof, and voltage. Elongated electrodes can be used to manipulate items into and from recesses, such as wells of microtitre trays, microchips, and semiconductor chips. Several recesses can be used to calibrate an array of collecting and depositing electrodes and deposits. Items can be removed from fluids, such as aerosol dispersions, and an air cleaner is also disclosed. Dielectrophoretic forces are exploited. Techniques and apparatus for depositing such items include charged targets and targets with electrodes designed to create a non-uniform field.

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Patent Owner(s)

Patent OwnerAddressTotal Patents
MASSACHUSETTS INSTITUTE OF TECHNOLOGYCAMBRIDGE, MA3306

International Classification(s)

Inventor(s)

Inventor Name Address # of filed Patents Total Citations
Chopinaud, Marjorie E Feytiat, FR 2 9
Cima, Michael J Winchester, MA 125 5568
Tupper, Malinda M Cambridge, MA 6 26

Cited Art Landscape

Patent Info (Count) # Cites Year
 
Other [Check patent profile for assignment information] (2)
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SHARPER IMAGE CORPORATION (1)
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Proudo Co., Ltd. (1)
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SARNOFF CORPORATION (11)
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FLORIDA STATE UNIVERSITY RESEARCH FOUNDATION, INC. (1)
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* Cited By Examiner

Patent Citation Ranking

Forward Cite Landscape

Patent Info (Count) # Cites Year
 
HEWLETT-PACKARD DEVELOPMENT COMPANY, L.P. (2)
* 7780830 Electro-wetting on dielectric for pin-style fluid delivery 4 2005
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TRANSFORM PHARMACEUTICALS, INC. (4)
7449342 Methods of manipulating small amounts of solids 5 2003
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UNITED STATES OF AMERICA AS REPRESENTED BY THE ADMINISTRATOR OF THE NATIONAL AERONAUTICS AND SPACE ADMINISTRATION (1)
* 8492160 Biomarker sensors and method for multi-color imaging and processing of single-molecule life signatures 0 2010
 
SANDIA CORPORATION (1)
* 7713395 Dielectrophoretic columnar focusing device 2 2006
 
USUI KOKUSAI SANGYO KAISHA LIMITED (2)
* 7524392 Bonding method using capillary condensation effect 1 2003
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ALCATEL LUCENT (1)
* 2014/0216,938 MICRO-CHEMICAL MIXING 0 2014
 
GLOBALFOUNDRIES INC. (2)
* 8491768 Method of purifying nanoparticles in a colloid 0 2010
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APPLERA CORPORATION (2)
7384606 Bead dispensing system 5 2003
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APPLIED BIOSYSTEMS, LLC (2)
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BioDot, Inc. (2)
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CORNING INCORPORATED (1)
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* Cited By Examiner