Patents by Inventor Guy A. Cohen

Guy A. Cohen has filed for patents to protect the following inventions. This listing includes patent applications that are pending as well as patents that have already been granted by the United States Patent and Trademark Office (USPTO).

  • Publication number: 20140166983
    Abstract: A method of forming a semiconductor device is provided. The method includes providing a structure including, a handle substrate, a buried boron nitride layer located above an uppermost surface of the handle substrate, a buried oxide layer located on an uppermost surface of the buried boron nitride layer, and a top semiconductor layer located on an uppermost surface of the buried oxide layer. Next, a first semiconductor pad, a second semiconductor pad and a plurality of semiconductor nanowires connecting the first semiconductor pad and the second semiconductor pad in a ladder-like configuration are patterned into the top semiconductor layer. The semiconductor nanowires are suspended by removing a portion of the buried oxide layer from beneath each semiconductor nanowire, wherein a portion of the uppermost surface of the buried boron nitride layer is exposed. Next, a gate all-around field effect transistor is formed.
    Type: Application
    Filed: August 26, 2013
    Publication date: June 19, 2014
    Applicant: International Business Machines Corporation
    Inventors: Guy Cohen, Michael A. Guillorn, Alfred Grill, Leathen Shi
  • Patent number: 8730865
    Abstract: A communication method includes operating a communication unit (60, 124), which demodulates radio signals in accordance with a first air interface and applies at least one upper-layer process to the demodulated signals. A signal is received and demodulated in accordance with a second air interface, different from the first air interface. The demodulated signal is input to the communication unit so as to cause the communication unit to apply the upper-layer process to the signal that was demodulated using the second air interface, while superseding the first air interface.
    Type: Grant
    Filed: April 25, 2010
    Date of Patent: May 20, 2014
    Assignee: Novelsat Ltd.
    Inventors: Daniel Wajcer, Guy Cohen
  • Patent number: 8716091
    Abstract: A method for fabricating an upside-down p-FET includes: fully etching source and drain regions in a donor substrate by etching a silicon-on-insulator layer through buried oxide and partially etching the silicon substrate; refilling a bottom and sidewall surfaces of the etched source and drain regions with epitaxial silicide/germanide to form e-SiGe source and drain regions; capping the source and drain regions with self-aligning silicide/germanide; providing a silicide layer formed over the gate conductor line; providing a first stress liner over the gate and the e-SiGe source and drain regions; depositing a planarized dielectric over the self-aligning silicide/germanide; inverting the donor substrate; bonding the donor substrate to a host wafer; and selectively exposing the buried oxide and the e-SiGe source and drain regions by removing the donor wafer.
    Type: Grant
    Filed: March 30, 2010
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Guy Cohen, David James Frank, Isaac Lauer
  • Patent number: 8716695
    Abstract: A method of fabricating a FET device is provided which includes the following steps. Nanowires/pads are formed in a SOI layer over a BOX layer, wherein the nanowires are suspended over the BOX. A HSQ layer is deposited that surrounds the nanowires. A portion(s) of the HSQ layer that surround the nanowires are cross-linked, wherein the cross-linking causes the portion(s) of the HSQ layer to shrink thereby inducing strain in the nanowires. One or more gates are formed that retain the strain induced in the nanowires. A FET device is also provided wherein each of the nanowires has a first region(s) that is deformed such that a lattice constant in the first region(s) is less than a relaxed lattice constant of the nanowires and a second region(s) that is deformed such that a lattice constant in the second region(s) is greater than the relaxed lattice constant of the nanowires.
    Type: Grant
    Filed: June 21, 2013
    Date of Patent: May 6, 2014
    Assignee: International Business Machines Corporation
    Inventors: Guy Cohen, Michael A. Guillorn, Conal E. Murray
  • Publication number: 20140103422
    Abstract: A MEMS transistor for a FBEOL level of a CMOS integrated circuit is disclosed. The MEMS transistor includes a cavity within the integrated circuit. A MEMS cantilever switch having two ends is disposed within the cavity and anchored at least at one of the two ends. A gate and a drain are in a sidewall of the cavity, and are separated from the MEMS cantilever switch by a gap. In response to a voltage applied to the gate, the MEMS cantilever switch moves across the gap in a direction parallel to the plane of the FBEOL level of the CMOS integrated circuit into electrical contact with the drain to permit a current to flow between the source and the drain. Methods for fabricating the MEMS transistor are also disclosed. In accordance with the methods, a MEMS cantilever switch, a gate, and a drain are constructed on a far back end of line (FBEOL) level of a CMOS integrated circuit in a plane parallel to the FBEOL level.
    Type: Application
    Filed: November 8, 2012
    Publication date: April 17, 2014
    Applicant: International Business Machines Corporation
    Inventors: Leland CHANG, Guy Cohen, Michael A. Guillorn, Effendi Leobandung, Fei Liu, Ghavam G. Shahidi
  • Publication number: 20140106552
    Abstract: A MEMS transistor for a FBEOL level of a CMOS integrated circuit is disclosed. The MEMS transistor includes a cavity within the integrated circuit. A MEMS cantilever switch having two ends is disposed within the cavity and anchored at least at one of the two ends. A gate and a drain are in a sidewall of the cavity, and are separated from the MEMS cantilever switch by a gap. In response to a voltage applied to the gate, the MEMS cantilever switch moves across the gap in a direction parallel to the plane of the FBEOL level of the CMOS integrated circuit into electrical contact with the drain to permit a current to flow between the source and the drain. Methods for fabricating the MEMS transistor are also disclosed. In accordance with the methods, a MEMS cantilever switch, a gate, and a drain are constructed on a far back end of line (FBEOL) level of a CMOS integrated circuit in a plane parallel to the FBEOL level.
    Type: Application
    Filed: October 16, 2012
    Publication date: April 17, 2014
    Applicant: International Business Machines Corporation
    Inventors: Leland Chang, Guy Cohen, Michael A. Guillorn, Effendi Leobandung, Fei Liu, Ghavam G. Shahidi
  • Patent number: 8683611
    Abstract: A high resolution AFM tip is provided which includes an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of the semiconductor cantilever, the semiconductor pyramid having an apex. The AFM tip also includes a single Al-doped semiconductor nanowire on the exposed apex of the semiconductor pyramid, wherein the single Al-doped semiconductor nanowire is epitaxial with respect to the apex of the semiconductor pyramid.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: March 25, 2014
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology
    Inventors: Guy Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Patent number: 8681409
    Abstract: A nonvolatile nano-electromechanical system device is provided and includes a cantilever structure, including a beam having an initial shape, which is supported at one end thereof by a supporting base and a beam deflector, including a phase change material (PCM), disposed on a portion of the beam in a non-slip condition with a material of the beam, the PCM taking one of an amorphous phase or a crystalline phase and deflecting the beam from the initial shape when taking the crystalline phase.
    Type: Grant
    Filed: August 3, 2012
    Date of Patent: March 25, 2014
    Assignee: International Business Machines Corporation
    Inventors: David J. Frank, Guy Cohen
  • Publication number: 20140069577
    Abstract: Techniques for producing a single-crystal phase change material and the incorporation of those techniques in an electronic device fabrication process flow are provided. In one aspect, a method of fabricating an electronic device is provided which includes the following steps. A single-crystal phase change material is formed on a first substrate. At least one first electrode in contact with a first side of the single-crystal phase change material is formed. The single-crystal phase change material and the at least one first electrode in contact with the first side of the single-crystal phase change material form a transfer structure on the first substrate. The transfer structure is transferred to a second substrate. At least one second electrode in contact with a second side of the single-crystal phase change material is formed. A single-crystal phase change material-containing structure and electronic device are also provided.
    Type: Application
    Filed: September 12, 2012
    Publication date: March 13, 2014
    Applicant: International Business Machines Corporation
    Inventors: Guy Cohen, Simone Raoux
  • Publication number: 20140070155
    Abstract: Techniques for producing a single-crystal phase change material and the incorporation of those techniques in an electronic device fabrication process flow are provided. In one aspect, a structure is provided having a substrate; an insulator over the substrate; and a single-crystal phase change material over the insulator. In another aspect, an electronic device is provided having a substrate; an insulator over the substrate; and a single-crystal phase change material over the insulator, wherein the single-crystal phase change material makes up a plurality of cells of the electronic device, each of the cells being configured to have one of two forms: 1) a first form consisting solely of single-crystal phase change material, and 2) a second form consisting of a region of single-crystal phase change material in contact with a region of amorphous phase change material.
    Type: Application
    Filed: September 14, 2012
    Publication date: March 13, 2014
    Applicant: International Business Machines Corporation
    Inventors: Guy Cohen, Simone Raoux
  • Publication number: 20140075258
    Abstract: A method includes receiving a signal, which carries data that is encoded with an Error Correction Code (ECC), and correcting the received signal with an adaptive receiver loop. Soft input metrics for the data are computed over the corrected signal. The ECC is decoded using a decoder, which estimates soft output metrics based on the soft input metrics, by operating the decoder in an alternating pattern of external iterations that update one or more of the soft input metrics based on one or more of the soft output metrics, and internal iterations that update the soft output metrics but not the soft input metrics. The adaptive receiver loop is adjusted in a schedule that is defined relative to the pattern of the external and the internal iterations of the decoder.
    Type: Application
    Filed: September 13, 2012
    Publication date: March 13, 2014
    Applicant: NOVELSAT LTD.
    Inventors: Mor Miller, Amit Steinberg, Daniel Wajcer, Dan Peleg, Guy Cohen
  • Publication number: 20140060148
    Abstract: Aspects of the present disclosure describe systems and methods for calibrating a metrology tool by using proportionality factors. The proportionality factors may be obtained by measuring a substrate under different measurement conditions. Then calculating the measured metrology value and one or more quality merits. From this information, proportionality factors may be determined. Thereafter the proportionality factors may be used to quantify the inaccuracy in a metrology measurement. The proportionality factors may also be used to determine an optimize measurement recipe. It is emphasized that this abstract is provided to comply with the rules requiring an abstract that will allow a searcher or other reader to quickly ascertain the subject matter of the technical disclosure. It is submitted with the understanding that it will not be used to interpret or limit the scope or meaning of the claims.
    Type: Application
    Filed: March 15, 2013
    Publication date: March 6, 2014
    Inventors: Eran Amit, Dana Klein, Guy Cohen, Amir Widmann, Nimrod Shuall, Amnon Manassen, Nuriel Amir
  • Patent number: 8659093
    Abstract: A contact structure is disclosed in which a continuous metal semiconductor alloy is located within a via contained within a dielectric material. The continuous semiconductor metal alloy is in direct contact with an upper metal line of a first metal level located atop the continuous semiconductor metal alloy and at least a surface of each source and drain diffusion region located beneath the continuous metal semiconductor alloy. The continuous metal semiconductor alloy includes a lower portion that is contained within an upper surface of each source and drain region, and a vertical pillar portion extending upward from the lower portion.
    Type: Grant
    Filed: February 27, 2012
    Date of Patent: February 25, 2014
    Assignee: International Business Machines Corporation
    Inventors: Guy Cohen, Christos D. Dimitrakopoulos, Alfred Grill
  • Patent number: 8658488
    Abstract: A graphene layer is provided onto at least an upper surface of a first dielectric material which includes at least one first conductive region contained therein. At least one semiconductor device is formed using the graphene layer as an element of the at least one semiconductor device. After forming the at least one semiconductor device, a second dielectric material is formed covering the graphene layer, the at least one semiconductor device, and portions of the first dielectric material. The second dielectric that is formed includes at least one second conductive region contained therein, and the at least one second conductive region is in contact with a conductive element of the at least one semiconductor device.
    Type: Grant
    Filed: March 14, 2013
    Date of Patent: February 25, 2014
    Assignee: International Business Machines Corporation
    Inventors: Christos D. Dimitrakopoulos, Guy Cohen, Stephen M. Gates, Alfred Grill, Timothy J. McArdle, Chun-yung Sung
  • Publication number: 20140048774
    Abstract: Semiconductor structures including parallel graphene nanoribbons or carbon nanotubes oriented along crystallographic directions are provided from a template of silicon carbide (SiC) fins or nanowires. The SiC fins or nanowires are first provided and then graphene nanoribbons or carbon nanotubes are formed on the exposed surfaces of the fin or the nanowires by annealing. In embodiments in which closed carbon nanotubes are formed, the nanowires are suspended prior to annealing. The location, orientation and chirality of the graphene nanoribbons and the carbon nanotubes that are provided are determined by the corresponding silicon carbide fins and nanowires from which they are formed.
    Type: Application
    Filed: October 28, 2013
    Publication date: February 20, 2014
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Guy Cohen, Christos D. Dimitrakopoulos, Alfred Grill
  • Patent number: 8648330
    Abstract: A method for forming a nanowire field effect transistor (FET) device includes forming a nanowire over a substrate, forming a liner material around a portion of the nanowire, forming a capping layer on the liner material, forming a first spacer adjacent to sidewalls of the capping layer and around portions of the nanowire, forming a hardmask layer on the capping layer and the first spacer, removing an exposed portion of the nanowire to form a first cavity partially defined by the gate material, epitaxially growing a semiconductor material on an exposed cross section of the nanowire in the first cavity, removing the hardmask layer and the capping layer, forming a second capping layer around the semiconductor material epitaxially grown in the first cavity to define a channel region, and forming a source region and a drain region contacting the channel region.
    Type: Grant
    Filed: January 5, 2012
    Date of Patent: February 11, 2014
    Assignee: International Business Machines Corporation
    Inventors: Sarunya Bangsaruntip, Guy Cohen, Amlan Majumdar, Jeffrey W. Sleight
  • Publication number: 20140034908
    Abstract: Techniques for increasing effective device width of a nanowire FET device are provided. In one aspect, a method of fabricating a FET device is provided. The method includes the following steps. A SOI wafer is provided having an SOI layer over a BOX, wherein the SOI layer is present between a buried nitride layer and a nitride cap. The SOI layer, the buried nitride layer and the nitride cap are etched to form nanowire cores and pads in the SOI layer in a ladder-like configuration. The nanowire cores are suspended over the BOX. Epitaxial sidewalls are formed over the sidewalls of the nanowires cores. The buried nitride layer and the nitride cap are removed from the nanowire cores. A gate stack is formed that surrounds at least a portion of each of the nanowire cores and the epitaxial sidewalls.
    Type: Application
    Filed: August 28, 2012
    Publication date: February 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Sarunya Bangsaruntip, Guy Cohen, Chung-Hsun Lin, Jeffrey W. Sleight
  • Publication number: 20140034905
    Abstract: Techniques for increasing effective device width of a nanowire FET device are provided. In one aspect, a method of fabricating a FET device is provided. The method includes the following steps. A SOI wafer is provided having an SOI layer over a BOX. Nanowire cores and pads are etched in the SOI layer in a ladder-like configuration. The nanowire cores are suspended over the BOX. Epitaxial shells are formed surrounding each of the nanowire cores. A gate stack is formed that surrounds at least a portion of each of the nanowire cores/epitaxial shells, wherein the portions of the nanowire cores/epitaxial shells surrounded by the gate stack serve as channels of the device, and wherein the pads and portions of the nanowire cores/epitaxial shells that extend out from the gate stack serve as source and drain regions of the device.
    Type: Application
    Filed: August 1, 2012
    Publication date: February 6, 2014
    Applicant: International Business Machines Corporation
    Inventors: Sarunya Bangsaruntip, Guy Cohen, Chung-Hsun Lin, Jeffrey W. Sleight
  • Patent number: 8644866
    Abstract: A method for communication includes receiving a Radio Frequency (RF) channel containing a desired signal conforming to a first air interface and an interfering signal conforming to a second air interface. A first receiver configured for the first air interface and a second receiver configured for the second air interface are synchronized to a common frequency and timing reference. While the first and second receivers are synchronized, the desired signal is decoded from the RF channel using the first receiver to generate a first output, the interfering signal is decoded from the RF channel using the second receiver to generate a second output, and the desired signal is reconstructed while suppressing the interfering signal by jointly processing the first and second outputs.
    Type: Grant
    Filed: February 20, 2011
    Date of Patent: February 4, 2014
    Assignee: Novelsat Ltd.
    Inventors: Daniel Wajcer, Guy Cohen
  • Patent number: 8642996
    Abstract: Semiconductor structures including parallel graphene nanoribbons or carbon nanotubes oriented along crystallographic directions are provided from a template of silicon carbide (SiC) fins or nanowires. The SiC fins or nanowires are first provided and then graphene nanoribbons or carbon nanotubes are formed on the exposed surfaces of the fin or the nanowires by annealing. In embodiments in which closed carbon nanotubes are formed, the nanowires are suspended prior to annealing. The location, orientation and chirality of the graphene nanoribbons and the carbon nanotubes that are provided are determined by the corresponding silicon carbide fins and nanowires from which they are formed.
    Type: Grant
    Filed: April 18, 2011
    Date of Patent: February 4, 2014
    Assignee: International Business Machines Corporation
    Inventors: Guy Cohen, Christos D. Dimitrakopoulos, Alfred Grill