Patent application number | Description | Published |
20100327255 | NANOFLUDIC FIELD EFFECT TRANSISTOR BASED ON SURFACE CHARGE MODULATED NANOCHANNEL - A field effect transistor device includes: a reservoir bifurcated by a membrane of three layers: two electrically insulating layers; and an electrically conductive gate between the two insulating layers. The gate has a surface charge polarity different from at least one of the insulating layers. A nanochannel runs through the membrane, connecting both parts of the reservoir. The device further includes: an ionic solution filling the reservoir and the nanochannel; a drain electrode; a source electrode; and voltages applied to the electrodes (a voltage between the source and drain electrodes and a voltage on the gate) for turning on an ionic current through the ionic channel wherein the voltage on the gate gates the transportation of ions through the ionic channel. | 12-30-2010 |
20110094884 | SURFACE CHARGE ENABLED NANOPOROUS SEMI-PERMEABLE MEMBRANE FOR DESALINATION - A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided. | 04-28-2011 |
20110201204 | Precisely Tuning Feature Sizes on Hard Masks Via Plasma Treatment - Methods are provided for fabricating devices. A first layer is formed. A hardmask on the first layer is formed. Features on the hardmask are patterned. The sizes of features on the hardmask are reduced by applying a plasma treatment process to form reduced size features. Also, the size of features on the hardmask can be enlarged to form enlarged size features by applying the plasma treatment process and/or removing the oxidized part of the feature during plasma treatment process. Another method may include a first layer formed on a substrate and a second layer formed on the first layer. First features are patterned on the first layer, and second features are patterned on the second layer. A size of second features on the second layer is closed due to the different oxidation rate of the two layers during the plasma treatment process, to form a self-sealed channel and/or self-buried trench. | 08-18-2011 |
20110223652 | PIEZOELECTRIC-BASED NANOPORE DEVICE FOR THE ACTIVE CONTROL OF THE MOTION OF POLYMERS THROUGH THE SAME - Apparatus, system, and methods are provided for utilizing piezoelectric material for controlling a polymer through a nanopore. A reservoir is formed filled with conductive fluid. A membrane is formed that separates the reservoir. A nanopore is formed through the membrane. The membrane comprises electrical conductive layers, piezoelectric layers, and insulating layers. The piezoelectric layers are operative to control a size of the nanopore for clamping/releasing a polymer as well as to control the thickness of part of the membrane when a voltage is applied to the piezoelectric layers. Combinations of clamping/releasing the polymer and changing the thickness of part of the membrane can move a polymer through the nanopore at any electrically controlled speed and also stretch or break a polymer in the nanopore. | 09-15-2011 |
20110224098 | Nanopore Based Device for Cutting Long DNA Molecules into Fragments - Apparatus, system, and method are provided for cutting a linear charged polymer inside a nanopore. A first voltage is applied to create an electric field in a first direction. A second voltage is applied to create an electric field in a second direction, and the first direction is opposite to the second direction. When the electric field in the first direction and the electric field in the second direction are applied to a linear charged polymer inside a nanopore, the linear charged polymer is cut at a location with predetermined accuracy. | 09-15-2011 |
20110308949 | NANO-FLUIDIC FIELD EFFECTIVE DEVICE TO CONTROL DNA TRANSPORT THROUGH THE SAME - The present invention provides a nano-fluidic field effective device. The device includes a channel having a first side and a second side, a first set of electrodes adjacent to the first side, a second set of electrodes adjacent to the second side, a control unit for applying electric potentials to the electrodes and a fluid within the channel containing a charge molecule. The first set of electrodes is disposed such that application of electric potentials produces a spatially varying electric field that confines a charged molecule within a predetermined area of said channel. The second set of electrodes is disposed such that application of electric potentials relative to the electric potentials applied to the first set of electrodes creates an electric field that confines the charged molecule to an area away from the second side of the channel. | 12-22-2011 |
20120267249 | SURFACE CHARGE ENABLED NANOPOROUS SEMI-PERMEABLE MEMBRANE FOR DESALINATION - A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided. | 10-25-2012 |
20120273362 | SURFACE CHARGE ENABLED NANOPOROUS SEMI-PERMEABLE MEMBRANE FOR DESALINATION - A filter includes a membrane having a plurality of nanochannels formed therein. A first surface charge material is deposited on an end portion of the nanochannels. The first surface charge material includes a surface charge to electrostatically influence ions in an electrolytic solution such that the nanochannels reflect ions back into the electrolytic solution while passing a fluid of the electrolytic solution. Methods for making and using the filter are also provided. | 11-01-2012 |
20120298510 | NANOPORE BASED DEVICE FOR CUTTING LONG DNA MOLECULES INTO FRAGMENTS - Apparatus, system, and method are provided for cutting a linear charged polymer inside a nanopore. A first voltage is applied to create an electric field in a first direction. A second voltage is applied to create an electric field in a second direction, and the first direction is opposite to the second direction. When the electric field in the first direction and the electric field in the second direction are applied to a linear charged polymer inside a nanopore, the linear charged polymer is cut at a location with predetermined accuracy. | 11-29-2012 |
20140131202 | INTEGRATED NANOPORE AND PAUL TRAP MECHANISM FOR DNA CAPTURE AND MOTION CONTROL - A mechanism is provided for capturing a molecule via an integrated system. An alternating voltage is applied to a Paul trap device in an electrically conductive solution to generate electric fields. The Paul trap device is integrated with a nanopore device to form the integrated system. Forces from the electric fields of the Paul trap device position the molecule to a nanopore in the nanopore device. A first voltage is applied to the nanopore device to capture the molecule in the nanopore of the nanopore device. | 05-15-2014 |
20140131203 | INTEGRATED NANOPORE AND PAUL TRAP MECHANISM FOR DNA CAPTURE AND MOTION CONTROL - A mechanism is provided for capturing a molecule via an integrated system. An alternating voltage is applied to a Paul trap device in an electrically conductive solution to generate electric fields. The Paul trap device is integrated with a nanopore device to form the integrated system. Forces from the electric fields of the Paul trap device position the molecule to a nanopore in the nanopore device. A first voltage is applied to the nanopore device to capture the molecule in the nanopore of the nanopore device. | 05-15-2014 |