Patents by Inventor Maha M. Khayyat

Maha M. Khayyat 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).

  • Patent number: 9647063
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Grant
    Filed: July 13, 2015
    Date of Patent: May 9, 2017
    Assignees: GLOBALFOUNDRIES INC., KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Publication number: 20150318352
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Application
    Filed: July 13, 2015
    Publication date: November 5, 2015
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Patent number: 9082687
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: July 14, 2015
    Assignees: INTERNATIONAL BUSINESS MACHINES CORPORATION, KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Patent number: 9018082
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Grant
    Filed: July 23, 2012
    Date of Patent: April 28, 2015
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • 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
  • Publication number: 20130269860
    Abstract: A stressor layer is formed atop a base substrate at a first temperature which induces a first tensile stress in the base substrate that is below a fracture toughness of base substrate. The base substrate and the stressor layer are then brought to a second temperature which is less than the first temperature. The second temperature induces a second tensile stress in the stressor layer which is greater than the first tensile stress and which is sufficient to allow for spalling mode fracture to occur within the base substrate. The base substrate is spalled at the second temperature to form a spalled material layer. Spalling occurs at a fracture depth which is dependent upon the fracture toughness of the base substrate, stress level within the base substrate, and the second tensile stress of the stressor layer induced at the second temperature.
    Type: Application
    Filed: April 17, 2012
    Publication date: October 17, 2013
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Maha M. Khayyat, Norma E. Sosa Cortes, Stephen W. Bedell, Keith E. Fogel, Devendra K. Sadana
  • Patent number: 8474061
    Abstract: A method of fabricating high resolution atomic force microscopy (AFM) tips including a single semiconductor nanowire grown at an apex of a semiconductor pyramid of each AFM tip is provided. The semiconductor nanowire that is grown has a controllable diameter and a high aspect ratio, without significant tapering from the tip of the semiconductor nanowire to its base. The method includes providing an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of said semiconductor cantilever. The semiconductor pyramid has an apex. A patterned oxide layer is formed on the AFM probe. The patterned oxide layer has an opening that exposes the apex of the semiconductor pyramid. A single semiconductor nanowire is grown on the exposed apex of the semiconductor pyramid utilizing a non-oxidized Al seed material as a catalyst for nanowire growth.
    Type: Grant
    Filed: September 10, 2012
    Date of Patent: June 25, 2013
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology
    Inventors: Guy Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Publication number: 20130019351
    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: Application
    Filed: September 10, 2012
    Publication date: January 17, 2013
    Applicants: King Abdulaziz City for Science and Technology, International Business Machines Corporation
    Inventors: Guy M. Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Patent number: 8349715
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Grant
    Filed: January 29, 2010
    Date of Patent: January 8, 2013
    Assignees: International Business Machines Corporation, King Abdulaziz City for Science and Technology
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Publication number: 20120331593
    Abstract: A method of fabricating high resolution atomic force microscopy (AFM) tips including a single semiconductor nanowire grown at an apex of a semiconductor pyramid of each AFM tip is provided. The semiconductor nanowire that is grown has a controllable diameter and a high aspect ratio, without significant tapering from the tip of the semiconductor nanowire to its base. The method includes providing an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of said semiconductor cantilever. The semiconductor pyramid has an apex. A patterned oxide layer is formed on the AFM probe. The patterned oxide layer has an opening that exposes the apex of the semiconductor pyramid. A single semiconductor nanowire is grown on the exposed apex of the semiconductor pyramid utilizing a non-oxidized Al seed material as a catalyst for nanowire growth.
    Type: Application
    Filed: September 10, 2012
    Publication date: December 27, 2012
    Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Guy M. Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Publication number: 20120309269
    Abstract: Method to (i) introduce additional control into a material spalling process, thus improving both the crack initiation and propagation, and (ii) increase the range of selectable spalling depths are provided. In one embodiment, the method includes providing a stressor layer on a surface of a base substrate at a first temperature which is room temperature. Next, the base substrate including the stressor layer is brought to a second temperature which is less than room temperature. The base substrate is spalled at the second temperature to form a spalled material layer. Thereafter, the spalled material layer is returned to room temperature, i.e., the first temperature.
    Type: Application
    Filed: June 1, 2011
    Publication date: December 6, 2012
    Applicants: KING ABDULAZIZ CITY FOR SCIENCE AND TECHNOLOGY, INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Maha M. Khayyat, Norma E. Sosa Cortes, Katherine L. Saenger, Stephen W. Bedell, Devendra K. Sadana
  • Patent number: 8321961
    Abstract: A method of fabricating high resolution atomic force microscopy (AFM) tips including a single semiconductor nanowire grown at an apex of a semiconductor pyramid of each AFM tip is provided. The semiconductor nanowire that is grown has a controllable diameter and a high aspect ratio, without significant tapering from the tip of the semiconductor nanowire to its base. The method includes providing an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of said semiconductor cantilever. The semiconductor pyramid has an apex. A patterned oxide layer is formed on the AFM probe. The patterned oxide layer has an opening that exposes the apex of the semiconductor pyramid. A single semiconductor nanowire is grown on the exposed apex of the semiconductor pyramid utilizing a non-oxidized Al seed material as a catalyst for nanowire growth.
    Type: Grant
    Filed: October 7, 2010
    Date of Patent: November 27, 2012
    Assignees: International Business Machines Corporation, King Abdulazlz City for Science and Technology
    Inventors: Guy Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Publication number: 20120286235
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Application
    Filed: July 23, 2012
    Publication date: November 15, 2012
    Applicant: International Business Machines Corporation
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Publication number: 20120289035
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Application
    Filed: July 23, 2012
    Publication date: November 15, 2012
    Applicant: International Business Machines Corporation
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser
  • Publication number: 20120090057
    Abstract: A method of fabricating high resolution atomic force microscopy (AFM) tips including a single semiconductor nanowire grown at an apex of a semiconductor pyramid of each AFM tip is provided. The semiconductor nanowire that is grown has a controllable diameter and a high aspect ratio, without significant tapering from the tip of the semiconductor nanowire to its base. The method includes providing an AFM probe including a semiconductor cantilever having a semiconductor pyramid extending upward from a surface of said semiconductor cantilever. The semiconductor pyramid has an apex. A patterned oxide layer is formed on the AFM probe. The patterned oxide layer has an opening that exposes the apex of the semiconductor pyramid. A single semiconductor nanowire is grown on the exposed apex of the semiconductor pyramid utilizing a non-oxidized Al seed material as a catalyst for nanowire growth.
    Type: Application
    Filed: October 7, 2010
    Publication date: April 12, 2012
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Guy M. Cohen, Mark C. Reuter, Brent A. Wacaser, Maha M. Khayyat
  • Publication number: 20110186804
    Abstract: A method of fabricating templated semiconductor nanowires on a surface of a semiconductor substrate for use in semiconductor device applications is provided. The method includes controlling the spatial placement of the semiconductor nanowires by using an oxygen reactive seed material. The present invention also provides semiconductor structures including semiconductor nanowires. In yet another embodiment, patterning of a compound semiconductor substrate or other like substrate which is capable of forming a compound semiconductor alloy with an oxygen reactive element during a subsequent annealing step is provided. This embodiment provides a patterned substrate that can be used in various applications including, for example, in semiconductor device manufacturing, optoelectronic device manufacturing and solar cell device manufacturing.
    Type: Application
    Filed: January 29, 2010
    Publication date: August 4, 2011
    Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATION
    Inventors: Maha M. Khayyat, Devendra K. Sadana, Brent A. Wacaser