Patents by Inventor Joseph Geusic

Joseph Geusic 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: 20050105869
    Abstract: A waveguide structure formed with a three-dimensional (3D) photonic crystal is disclosed. The 3D photonic crystal comprises a periodic array of voids formed in a solid substrate. The voids are arranged to create a complete photonic bandgap. The voids maybe formed using a technique called “surface transformation,” which involves forming holes in the substrate surface, and annealing the substrate to initiate migration of the substrate near the surface to form voids in the substrate. A channel capable of transmitting radiation corresponding to the complete bandgap is formed in the 3D photonic crystal, thus forming the waveguide. The waveguide may be formed by interfacing two 3D photonic crystal regions, with at least one of the regions having a channel formed therein. The bandgap wavelength can be chosen by arranging the periodic array of voids to have a lattice constant a fraction of the bandgap wavelength.
    Type: Application
    Filed: December 7, 2004
    Publication date: May 19, 2005
    Inventors: Leonard Forbes, Joseph Geusic
  • Publication number: 20050070036
    Abstract: A multi-layered reflective mirror formed of spaced-apart plate-shaped empty space patterns formed within a substrate is disclosed. The plurality of plate-shaped empty space patterns are formed by drilling holes in the substrate and annealing the substrate to form the spaced-apart plate-shaped empty space patterns.
    Type: Application
    Filed: May 16, 2001
    Publication date: March 31, 2005
    Inventors: Joseph Geusic, Eugene Marsh
  • Publication number: 20050029501
    Abstract: Systems, devices and methods are provided to improve performance of integrated circuits by providing a low-k insulator. One aspect is an integrated circuit insulator structure. One embodiment includes a solid structure of an insulator material, and a precisely determined arrangement of at least one void formed within the solid structure which lowers an effective dielectric constant of the insulator structure. One aspect is a method of forming a low-k insulator structure. In one embodiment, an insulator material is deposited, and a predetermined arrangement of at least one hole is formed in a surface of the insulator material. The insulator material is annealed such that the low-k dielectric material undergoes a surface transformation to transform the arrangement of at least one hole into predetermined arrangement of at least one empty space below the surface of the insulator material. Other aspects are provided herein.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 10, 2005
    Inventors: Joseph Geusic, Paul Farrar, Arup Bhattacharyya
  • Publication number: 20050029683
    Abstract: One aspect of this disclosure relates to a method for creating a gettering site in a semiconductor wafer. In various embodiments, a predetermined arrangement of a plurality of holes is formed in the semiconductor wafer through a surface of the wafer. The wafer is annealed such that the wafer undergoes a surface transformation to transform the arrangement of the plurality of holes into a predetermined arrangement of at least one empty space of a predetermined size within the wafer to form the gettering site. One aspect relates to a semiconductor wafer. In various embodiments, the wafer includes at least one device region, and at least one gettering region located proximate to the at least one device region. The gettering region includes a precisely-determined arrangement of a plurality of precisely-formed voids that are formed within the wafer using a surface transformation process. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 10, 2005
    Inventors: Leonard Forbes, Joseph Geusic
  • Publication number: 20050023638
    Abstract: Systems and methods are provided for a scalable high-performance antifuse structure and process that has a low RC component, a uniform dielectric breakdown, and a very low, effective dielectric constant (keff) such that a programming pulse voltage is scalable with Vdd. One aspect of the present subject matter is an antifuse device that is positioned or coupled between a first metal level and a second metal level. One embodiment of the antifuse device includes a porous antifuse dielectric layer, and at least one injector Silicon-Rich-Insulator (SRI) layer in contact with the porous antifuse dielectric layer. In one embodiment, the porous antifuse dielectric layer includes SiO2 formed with air-filled voids. In one embodiment, the at least one injector SRI layer includes two injector Silicon-Rich-Nitride layers that sandwich the porous antifuse dielectric layer. Other aspects are provided herein.
    Type: Application
    Filed: August 31, 2004
    Publication date: February 3, 2005
    Inventors: Arup Bhattacharyya, Joseph Geusic
  • Publication number: 20050026360
    Abstract: A method and structure for high capacitance memory cells is provided. The method includes forming a trench capacitor in a semiconductor substrate. A self-structured mask is formed on the interior surface of the trench. The interior surface of the trench is etched to form an array of silicon pillars. The self-structured mask is removed. Then an insulator layer is formed on the array of silicon pillars. A polycrystalline semiconductor plate extends outwardly from the insulator layer in the trench.
    Type: Application
    Filed: August 30, 2004
    Publication date: February 3, 2005
    Inventors: Joseph Geusic, Leonard Forbes, Kie Ahn
  • Publication number: 20050017273
    Abstract: One aspect of this disclosure relates to a method for creating a gettering site in a semiconductor wafer. In various embodiments, a predetermined arrangement of a plurality of holes is formed in the semiconductor wafer through a surface of the wafer. The wafer is annealed such that the wafer undergoes a surface transformation to transform the arrangement of the plurality of holes into a predetermined arrangement of at least one empty space of a predetermined size within the wafer to form the gettering site. One aspect relates to a semiconductor wafer. In various embodiments, the wafer includes at least one device region, and at least one gettering region located proximate to the at least one device region. The gettering region includes a precisely-determined arrangement of a plurality of precisely-formed voids that are formed within the wafer using a surface transformation process. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 27, 2005
    Inventors: Leonard Forbes, Joseph Geusic
  • Publication number: 20050020094
    Abstract: One aspect of this disclosure relates to a method for forming a wafer with a strained semiconductor. In various embodiments of the method, a predetermined contour is formed in one of a semiconductor membrane and a substrate wafer. The semiconductor membrane is bonded to the substrate wafer and the predetermined contour is straightened to induce a predetermined strain in the semiconductor membrane. In various embodiments, a substrate wafer is flexed into a flexed position, a portion of the substrate wafer is bonded to a semiconductor layer when the substrate wafer is in the flexed position, and the substrate wafer is relaxed to induce a predetermined strain in the semiconductor layer. Other aspects and embodiments are provided herein.
    Type: Application
    Filed: July 21, 2003
    Publication date: January 27, 2005
    Inventors: Leonard Forbes, Joseph Geusic, Salman Akram
  • Publication number: 20020070419
    Abstract: A plurality of buried conductors and/or buried plate patterns formed within a monocrystalline substrate is disclosed. A plurality of empty-spaced buried patterns are formed by drilling holes in the monocrystalline substrate and annealing the monocrystalline substrate to form empty-spaced patterns of various geometries. The empty-spaced patterns are then connected through vias with surfaces of the monocrystalline substrate. The empty-spaced patterns and their respective vias are subsequently filled with conductive materials.
    Type: Application
    Filed: August 29, 2001
    Publication date: June 13, 2002
    Inventors: Paul A. Farrar, Joseph Geusic
  • Patent number: 6383924
    Abstract: A plurality of buried conductors and/or buried plate patterns formed within a monocrystalline substrate is disclosed. A plurality of empty-spaced buried patterns are formed by drilling holes in the monocrystalline substrate and annealing the monocrystalline substrate to form empty-spaced patterns of various geometries. The empty-spaced patterns are then connected through vias with surfaces of the monocrystalline substrate. The empty-spaced patterns and their respective vias are subsequently filled with conductive materials.
    Type: Grant
    Filed: December 13, 2000
    Date of Patent: May 7, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Paul A. Farrar, Joseph Geusic
  • Patent number: 6356500
    Abstract: A memory device and method employing a scheme for reduced power consumption is disclosed. By dividing a memory array sector into memory sub arrays, the memory device can provide power to memory sub arrays that need to be powered up or, in the alternative, powered down. This reduces the power consumption and heat generation associated with high speed and high capacity memory devices.
    Type: Grant
    Filed: August 23, 2000
    Date of Patent: March 12, 2002
    Assignee: Micron Technology, Inc.
    Inventors: Eugene H. Cloud, Kie Y. Ahn, Leonard Forbes, Paul A. Farrar, Kevin G. Donohoe, Alan R. Reinberg, David J. Mcelroy, Luan C. Tran, Joseph Geusic