Search Patents
  • Direct growth of nanotubes, and their use in nanotweezers
    Publication number: 20020122766
    Abstract: A method of producing carbon single wall nanotubes (SWNT) by CVD is disclosed. The SWNTs are grown on a metal-catalyzed support surface, such as a commercially available silicon tips for atomic force microscopes (AFM). The growth characteristics of the SWNTs can be controlled by adjusting the density of the catalyst and the CVD growth conditions. The length of the SWNTs can be adjusted through pulsed electrical etching. Nanotubes of this type can find applications in nanotubes structures with defined patterns and for nano-tweezers. Nano-tweezers may be useful for manipulating matter, such as biological material, on a molecular level.
    Type: Application
    Filed: September 28, 2001
    Publication date: September 5, 2002
    Inventors: Charles M. Lieber, Jason H. Hafner, Chin Li Cheung, Philip Kim
  • APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING RADIAL ADDRESSING OF NANOWIRES
    Publication number: 20150108423
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Application
    Filed: October 22, 2014
    Publication date: April 23, 2015
    Applicant: Brown University Research Foundation
    Inventors: Andre Dehon, Charles M. Lieber, John E. Savage, Eric Rachlin
  • Method providing radial addressing of nanowires
    Patent number: 8883568
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Grant
    Filed: November 21, 2011
    Date of Patent: November 11, 2014
    Assignee: Brown University Research Foundation
    Inventors: Andre Dehon, Charles M. Lieber, John E. Savage, Eric Rachlin
  • APPARATUS, METHOD AND COMPUTER PROGRAM PRODUCT PROVIDING RADIAL ADDRESSING OF NANOWIRES
    Publication number: 20120061648
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Application
    Filed: November 21, 2011
    Publication date: March 15, 2012
    Inventors: Andre DEHON, Charles M. Lieber, John E. Savage, Eric Rachlin
  • Apparatus, method and computer program product providing radial addressing of nanowires
    Patent number: 9252214
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Grant
    Filed: October 22, 2014
    Date of Patent: February 2, 2016
    Assignee: Brown University
    Inventors: Andre Dehon, Charles M. Lieber, John E. Savage, Eric Rachlin
  • Sublithographic nanoscale memory architecture
    Patent number: 6963077
    Abstract: A memory array comprising nanoscale wires is disclosed. The nanoscale wires are addressed by means of controllable regions axially and/or radially distributed along the nanoscale wires. In a one-dimensional embodiment, memory locations are defined by crossing points between nanoscale wires and microscale wires. In a two-dimensional embodiment, memory locations are defined by crossing points between perpendicular nanoscale wires. In a three-dimensional embodiment, memory locations are defined by crossing points between nanoscale wires located in different vertical layers.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: November 8, 2005
    Assignees: California Institute of Technology, President and Fellows of Harvard College, Brown University, SRI International
    Inventors: André DeHon, Charles M. Lieber, Patrick D. Lincoln, John E. Savage
  • Apparatus, Method and Computer Program Product Providing Radial Addressing of Nanowires
    Publication number: 20080254291
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Application
    Filed: February 2, 2006
    Publication date: October 16, 2008
    Inventors: Andre Dehon, Charles M. Lieber, John E. Savage, Eric Rachlin
  • Apparatus, method and computer program product providing radial addressing of nanowires
    Patent number: 8072005
    Abstract: Disclosed is a method to construct a device that includes a plurality of nanowires (NWs) each having a core and at least one shell. The method includes providing a plurality of radially encoded NWs where each shell contains one of a plurality of different shell materials; and differentiating individual ones of the NWs from one another by selectively removing or not removing shell material within areas to be electrically coupled to individual ones of a plurality of mesowires (MWs). Also disclosed is a nanowire array that contains radially encoded NWs, and a computer program product useful in forming a nanowire array.
    Type: Grant
    Filed: February 2, 2006
    Date of Patent: December 6, 2011
    Assignee: Brown University Research Foundation
    Inventors: Andre Dehon, Charles M. Lieber, John E. Savage, Eric Rachlin
  • Stochastic assembly of sublithographic nanoscale interfaces
    Patent number: 6900479
    Abstract: A method for controlling electric conduction on nanoscale wires is disclosed. The nanoscale wires are provided with controllable regions axially and/or radially distributed. Controlling those regions by means of microscale wires or additional nanoscale wires allows or prevents electric conduction on the controlled nanoscale wires. The controllable regions are of two different types. For example, a first type of controllable region can exhibit a different doping from a second type of controllable region. The method allows one or more of a set of nanoscale wires, packed at sublithographic pitch, to be independently selected.
    Type: Grant
    Filed: July 24, 2003
    Date of Patent: May 31, 2005
    Assignees: California Institute of Technology, Brown University, President and Fellows of Harvard College, SRI International
    Inventors: André DeHon, Charles M. Lieber, Patrick D. Lincoln, John E. Savage
  • Doped elongated semiconductors, growing such semiconductors, devices including such semiconductors, and fabricating such devices
    Patent number: 8153470
    Abstract: A method for selectively aligning and positioning semiconductor nanowires on a substrate by providing a substrate; patterning electrodes on a surface of the substrate; conditioning the surface of the substrate to attach semiconductor nanowires to the surface by functionalizing the surface with a first functional group having an affinity for the semiconductor nanowires; providing an environment in contact with the electrodes, the environment having suspended therein the semiconductor nanowires; and providing an electric field between the electrodes, thereby causing the nanowires in the environment to align between and electrically connect the electrodes to thereby form a semiconducting channel between the electrodes.
    Type: Grant
    Filed: October 4, 2006
    Date of Patent: April 10, 2012
    Assignee: President and Fellows of Harvard College
    Inventors: Charles M. Lieber, Yi Cui, Xiangfeng Duan, Yu Huang
  • Nanostructures Containing Metal Semiconductor Compounds
    Publication number: 20090004852
    Abstract: A network element (10), such as a Packet Data Serving Node, detects (31) a change in operational status of a mobile station during a communication session and, in response to detecting such a change, automatically increases (32) memory capacity as is available to support additional communication sessions while simultaneously persisting at least some session information for potential subsequent use during the communication session. For example, this response can occur upon detecting that a mobile station has changed from an active to a dormant status. Then, upon returning to an active status, the network element can use the persisted information to facilitate rapid reconstruction of infrastructure support for the mobile station's call participation.
    Type: Application
    Filed: December 9, 2005
    Publication date: January 1, 2009
    Applicant: President and Fellows of Havard College
    Inventors: Charles M. Lieber, Yue Wu, Jie Xiang, Chen Yang, Wei Lu
  • THREE-DIMENSIONAL NETWORKS COMPRISING NANOELECTRONICS
    Publication number: 20160027846
    Abstract: The present invention generally relates to nanoscale wires and three-dimensional networks or structures comprising nanoscale wires. For example, certain embodiments are directed to three-dimensional structures comprising nanoscale wires. The structures may be porous and define electrical networks wherein the nanoscale wires can be determined or controlled. Other materials, such as inorganic materials, polymers, fabrics, etc., may be disposed within the three-dimensional structure, and in some embodiments, such that the three-dimensional structure is embedded within the material. The nanoscale wires may thus be used, for example, as sensors within the material. Other embodiments of the invention are generally directed to the use of such articles, methods of forming such articles, kits involving such articles, or the like.
    Type: Application
    Filed: April 3, 2014
    Publication date: January 28, 2016
    Inventors: Charles M. Lieber, Jia Liu, Chong Xie, Xiaochuan Dai
  • Nanopore Sensing By Local Electrical Potential Measurement
    Publication number: 20140190833
    Abstract: There is provided a nanopore disposed in a support structure, with a fluidic connection between a first fluidic reservoir and an inlet to the nanopore and a second fluidic connection between a second fluidic reservoir and an outlet from the nanopore first ionic solution of a first buffer concentration is disposed in the first reservoir and a second ionic solution of a second buffer concentration, different than the first concentration, is disposed in the second reservoir, with the nanopore providing the sole path of fluidic communication between the first and second reservoirs. An electrical connection is disposed at a location in the nanopore sensor that develops an electrical signal indicative of electrical potential local to at least one site in the nanopore sensor as an object translocates through the nanopore between the two reservoirs.
    Type: Application
    Filed: April 29, 2011
    Publication date: July 10, 2014
    Applicant: PRESIDENT AND FELLOWS OF HARVARD COLLEGE
    Inventors: Charles M. Lieber, Ping Xie
  • ANISOTROPIC DEPOSITION IN NANOSCALE WIRES
    Publication number: 20150380244
    Abstract: The present invention generally relates to nanoscale wires, including anisotropic deposition in nanoscale wires. In one set of embodiments, material may be deposited on certain portions of a nanoscale wire, e.g., anisotropically. For example, material may be deposited on a first facet of a crystalline nanoscale wire but not on a isotropic second facet. In some cases, additional materials may be deposited thereon, and/or the portions of the nanoscale wire may be removed, e.g., to produce vacant regions within the nanoscale wire, which may contain gas or other species. Other embodiments of the invention may be directed to articles made thereby, devices containing such nanoscale wires, kits involving such nanoscale wires, or the like.
    Type: Application
    Filed: February 4, 2014
    Publication date: December 31, 2015
    Inventors: Charles M. LIEBER, Sun-Kyung KIM, Robert DAY, Hong-Gyu PARK, Thomas J. KEMPA
  • Direct growth of nanotubes, and their use in nanotweezers
    Patent number: 6743408
    Abstract: A method of producing carbon single wall nanotubes (SWNT) by CVD is disclosed. The SWNTs are grown on a metal-catalyzed support surface, such as a commercially available silicon tips for atomic force microscopes (AFM). The growth characteristics of the SWNTs can be controlled by adjusting the density of the catalyst and the CVD growth conditions. The length of the SWNTs can be adjusted through pulsed electrical etching. Nanotubes of this type can find applications in nanotubes structures with defined patterns and for nano-tweezers. Nano-tweezers may be useful for manipulating matter, such as biological material, on a molecular level.
    Type: Grant
    Filed: September 28, 2001
    Date of Patent: June 1, 2004
    Assignee: President and Fellows of Harvard College
    Inventors: Charles M. Lieber, Jason H. Hafner, Chin Li Cheung, Philip Kim
  • HIGH-SENSITIVITY NANOSCALE WIRE SENSORS
    Publication number: 20100152057
    Abstract: The present invention generally relates to nanoscale wire devices and methods for use in determining analytes suspected to be present in a sample. The invention provides a nanoscale wire that has improved sensitivity, as the carrier concentration in the wire is controlled by an external gate voltage, such that the nanoscale wire has a Debye screening length that is greater than the average cross-sectional dimension of the nanoscale wire when the nanoscale wire is exposed to a solution suspected of containing an analyte. This Debye screening length (lambda) associated with the carrier concentration (p) inside nanoscale wire is adjusted by adjusting the gate voltage applied to an FET structure, such that the carriers in the nanoscale wire are depleted.
    Type: Application
    Filed: November 19, 2007
    Publication date: June 17, 2010
    Applicant: President and Fellows of Havard College
    Inventors: Charles M. Lieber, Xuan Gao, Gengfeng Zheng
  • SYSTEMS AND METHODS FOR INJECTABLE DEVICES
    Publication number: 20170172438
    Abstract: The present invention generally relates to nanoscale wires and/or injectable devices. In some embodiments, the present invention is directed to electronic devices that can be injected or inserted into soft matter, such as biological tissue or polymeric matrixes. For example, the device may be passed through a syringe or a needle. In some cases, the device may comprise one or more nanoscale wires. Other components, such as fluids or cells, may also be injected or inserted. In addition, in some cases, the device, after insertion or injection, may be connected to an external electrical circuit, e.g., to a computer. Other embodiments are generally directed to systems and methods of making, using, or promoting such devices, kits involving such devices, and the like.
    Type: Application
    Filed: April 3, 2015
    Publication date: June 22, 2017
    Inventors: Charles M. LIEBER, Jia LIU, Zengguang CHENG, Guosong HONG, Tian-Ming FU, Tao ZHOU
  • Nanopore sensing by local electrical potential measurement
    Patent number: 9702849
    Abstract: There is provided a nanopore disposed in a support structure, with a fluidic connection between a first fluidic reservoir and an inlet to the nanopore and a second fluidic connection between a second fluidic reservoir and an outlet from the nanopore. A first ionic solution of a first buffer concentration is disposed in the first reservoir and a second ionic solution of a second buffer concentration, different than the first concentration, is disposed in the second reservoir, with the nanopore providing the sole path of fluidic communication between the first and second reservoirs. An electrical connection is disposed at a location in the nanopore sensor that develops an electrical signal indicative of electrical potential local to at least one site in the nanopore sensor as an object translocates through the nanopore between the two reservoirs.
    Type: Grant
    Filed: April 29, 2011
    Date of Patent: July 11, 2017
    Assignee: President and Fellows of Harvard College
    Inventors: Charles M. Lieber, Ping Xie
  • Method of producing metal oxide nanorods
    Patent number: 6036774
    Abstract: Methods of preparing metal oxide nanorods are described. The metal oxide nanorods have diameters between 1 and 200 nm and aspect ratios between 5 and 2000. The methods include the steps of generating a metal vapor in a furnace, exposing the nanorod growth substrate to the metal vapor within a growth zone in the furnace for a sufficient time to grow metal oxide nanorods on a surface of the nanorod growth substrate, removing the nanorod growth substrate from the growth zone after the sufficient time to grow metal oxide nanorods on a surface of the nanorod growth substrate, and removing the metal oxide nanorods from the furnace. The methods can be used to prepared large quantities of metal oxide nanorods.
    Type: Grant
    Filed: January 22, 1997
    Date of Patent: March 14, 2000
    Assignee: President and Fellows of Harvard College
    Inventors: Charles M. Lieber, Peidong Yang
  • Nanostructures Containing Metal Semiconductor Compounds
    Publication number: 20090227107
    Abstract: A network element (10), such as a Packet Data Serving Node, detects (31) a change in operational status of a mobile station during a communication session and, in response to detecting such a change, automatically increases (32) memory capacity as is available to support additional communication sessions while simultaneously persisting at least some session information for potential subsequent use during the communication session. For example, this response can occur upon detecting that a mobile station has changed from an active to a dormant status. Then, upon returning to an active status, the network element can use the persisted information to facilitate rapid reconstruction of infrastructure support for the mobile station's call participation.
    Type: Application
    Filed: February 14, 2005
    Publication date: September 10, 2009
    Applicant: President and Fellows of Havard College
    Inventors: Charles M. Lieber, Yue Wu, Jie Xiang, Chen Yang, Wei Lu
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