Patents by Inventor Zhong L. Wang
Zhong L. Wang 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).
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Patent number: 8367462Abstract: In a method for growing a nanowire array, a photoresist layer is placed onto a nanowire growth layer configured for growing nanowires therefrom. The photoresist layer is exposed to a coherent light interference pattern that includes periodically alternately spaced dark bands and light bands along a first orientation. The photoresist layer exposed to the coherent light interference pattern along a second orientation, transverse to the first orientation. The photoresist layer developed so as to remove photoresist from areas corresponding to areas of intersection of the dark bands of the interference pattern along the first orientation and the dark bands of the interference pattern along the second orientation, thereby leaving an ordered array of holes passing through the photoresist layer. The photoresist layer and the nanowire growth layer are placed into a nanowire growth environment, thereby growing nanowires from the nanowire growth layer through the array of holes.Type: GrantFiled: April 21, 2011Date of Patent: February 5, 2013Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Suman Das, Sheng Xu, Dajun Yuan, Rui Guo, Yaguang Wei, Wenzhuo Wu
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Patent number: 8330154Abstract: An electrical generator includes a substrate, a semiconductor piezoelectric structure having a first end and an opposite second end disposed adjacent to the substrate, a first conductive contact and a second conductive contact. The structure bends when a force is applied adjacent to the first end, thereby causing an electrical potential difference to exist between a first side and a second side of the structure. The first conductive contact is in electrical communication with the first end and includes a material that creates a Schottky barrier between a portion of the first end of the structure and the first conductive contact. The first conductive contact is also disposed relative to the structure in a position so that the Schottky barrier is forward biased when the structure is deformed, thereby allowing current to flow from the first conductive contact into the first end.Type: GrantFiled: December 11, 2006Date of Patent: December 11, 2012Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Jinhui Song, Xudong Wang
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Patent number: 8294141Abstract: An ultraviolet light sensor includes an elongated metal oxide nanostructure, a layer of an ultraviolet light-absorbing polymer, a current source and a current detector. The elongated metal oxide nanostructure has a first end and an opposite second end. The layer of an ultraviolet light-absorbing polymer is disposed about at least a portion of the metal oxide nanostructure. The current source is configured to provide electrons to the first end of the metal oxide nanostructure. The current detector is configured to detect an amount of current flowing through the metal oxide nanostructure. The amount of current flowing through the metal oxide nanostructure corresponds to an amount of ultraviolet light impinging on the metal oxide nanostructure.Type: GrantFiled: July 7, 2009Date of Patent: October 23, 2012Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Changshi Lao, Jun Zhou
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Publication number: 20120256160Abstract: A semiconducting device includes a piezoelectric structure that has a first end and an opposite second end. A first conductor is in electrical communication with the first end and a second conductor is in electrical communication with the second end so as to form an interface therebetween. A force applying structure is configured to maintain an amount of strain in the piezoelectric member sufficient to generate a desired electrical characteristic in the semiconducting device.Type: ApplicationFiled: October 4, 2011Publication date: October 11, 2012Applicant: Georgia Tech Research CorporationInventors: Zhong L. Wang, Qing Yang
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Patent number: 8276131Abstract: A method that provides for dynamic loop transfer for a method having a first set of instructions being executed by an interpreter is provided. An execution stack includes slots for storing a value of each local variable known to each subroutine while the subroutine is active.Type: GrantFiled: August 30, 2007Date of Patent: September 25, 2012Assignee: International Business Machines CorporationInventors: Kevin J. Langman, Zhong L. Wang
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Patent number: 8266607Abstract: A method for lock reservation using cooperative multithreading is provided. The method includes analyzing code containing async points to support cooperative multithreading. The method also includes identifying a class of code as a candidate for reservation via determining locking properties within the code as a function of locations of async points within the code, and generating reserving code that reserves the shared object when code performing the reservation is considered hot code. The method further includes performing runtime monitoring of reservation performance to detect a contention level for the shared object, and removing the reservation when the runtime monitoring determines that a low level of contention exists.Type: GrantFiled: August 27, 2007Date of Patent: September 11, 2012Assignee: International Business Machines CorporationInventors: Peter W. Burka, Nikola Grcevski, Charles B. Hall, Zhong L. Wang
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Publication number: 20120168710Abstract: In a method of making a monolithic elongated nanowire, a mask polymer layer is applied to a selected crystal surface of a seed crystal. A plurality of spaced apart elongated openings is defined through the mask polymer layer, thereby exposing a corresponding plurality of portions of the crystal surface. The openings are disposed so as to be aligned with and parallel to a selected crystal axis of the seed crystal. The portions of the crystal surface are subjected to a chemical nutrient environment that causes crystalline material to grow from the plurality of portions for at least a period of time so that monocrystalline members grow from the elongated openings and until the monocrystalline members laterally expand so that each monocrystalline member grows into and merges with an adjacent one of the monocrystalline members, thereby forming a monolithic elongated nanowire.Type: ApplicationFiled: December 29, 2010Publication date: July 5, 2012Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Zhong L. Wang, Sheng Xu
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Publication number: 20120153860Abstract: A device includes a substrate having a first surface. A piezoelectric nanowire is disposed on the first surface of the substrate. The piezoelectric nanowire has a first end and an opposite second end. The piezoelectric nanowire is subjected to an amount of strain. A first Schottky contact is in electrical communication with the first end of the piezoelectric nanowire. A second Schottky contact is in electrical communication with the second end of the piezoelectric nanowire. A bias voltage source is configured to impart a bias voltage between the first Schottky contact and the second Schottky contact. A mechanism is configured to measure current flowing through the piezoelectric nanowire. The amount of strain is selected so that a predetermined current will through the piezoelectric nanowire when light of a selected intensity is applied to a first location on the piezoelectric nanowire.Type: ApplicationFiled: November 12, 2010Publication date: June 21, 2012Applicant: Georgia of Technology LicensingInventors: Zhong L. Wang, Youfan Hu, Yan Zhang
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Publication number: 20120137783Abstract: A generator includes a bio-compatible substrate onto which one mechanical generating unit is disposed. A plurality of elongated piezoelectric fibers each have a first end that is in electrical communication with a first electrode and an opposite second end that is in electrical communication with a second electrode. An insulative layer covers the first electrode, the second electrode and the elongated piezoelectric fibers. A third electrode and a fourth electrode are each disposed on the bio-compatible substrate opposite from the mechanical generating unit. A proton conducting member is in contact with both the third electrode and the fourth electrode. A glucose catalyzing enzyme is electrically coupled to the third electrode. An oxidase enzyme is electrically coupled to the fourth electrode. The third electrode is in electrical communication with each first electrode and the fourth electrode is in electrical communication with each second electrode.Type: ApplicationFiled: December 2, 2011Publication date: June 7, 2012Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Zhong L. Wang, Caofeng Pan, Ben Hansen, Ying Liu
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Patent number: 8141427Abstract: An apparatus for sensing a target substance includes a substrate, an elongated electroactive cantilever, a functional layer and an electrical sensor. The elongated electroactive cantilever includes a first surface and an opposite second surface. The elongated electroactive cantilever includes an electroactive member extending outwardly from the substrate. The functional layer is applied to the first surface and includes a material that reacts with the target substance so that when the functional layer is in the presence of the target substance, the functional layer will cause a change in an electrical property of the electroactive cantilever. The electrical sensor is coupled to the electroactive cantilever and is configured to sense the electrical property of the electroactive cantilever.Type: GrantFiled: June 4, 2008Date of Patent: March 27, 2012Assignee: Georgia Tech Research CorporationInventors: Zhong L Wang, Changshi Lao
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Publication number: 20120061348Abstract: A method of making nanostructures using a self-assembled monolayer of organic spheres is disclosed. The nanostructures include bowl-shaped structures and patterned elongated nanostructures. A bowl-shaped nanostructure with a nanorod grown from a conductive substrate through the bowl-shaped nanostructure may be configured as a field emitter or a vertical field effect transistor. A method of separating nanoparticles of a desired size employs an array of bowl-shaped structures.Type: ApplicationFiled: November 18, 2011Publication date: March 15, 2012Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Zhong L. Wang, Christopher J. Summers, Xudong Wang, Elton D. Graugnard, Jeffrey King
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Publication number: 20110309354Abstract: In a method for growing a nanowire array, a photoresist layer is placed onto a nanowire growth layer configured for growing nanowires therefrom. The photoresist layer is exposed to a coherent light interference pattern that includes periodically alternately spaced dark bands and light bands along a first orientation. The photoresist layer exposed to the coherent light interference pattern along a second orientation, transverse to the first orientation. The photoresist layer developed so as to remove photoresist from areas corresponding to areas of intersection of the dark bands of the interference pattern along the first orientation and the dark bands of the interference pattern along the second orientation, thereby leaving an ordered array of holes passing through the photoresist layer. The photoresist layer and the nanowire growth layer are placed into a nanowire growth environment, thereby growing nanowires from the nanowire growth layer through the array of holes.Type: ApplicationFiled: April 21, 2011Publication date: December 22, 2011Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Zhong L. Wang, Suman Das, Sheng Xu, Dajun Yuan, Rui Guo, Yaguang Wei, Wenzhuo Wu
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Patent number: 8076701Abstract: A method of making nanostructures using a self-assembled monolayer of organic spheres is disclosed. The nanostructures include bowl-shaped structures and patterned elongated nanostructures. A bowl-shaped nanostructure with a nanorod grown from a conductive substrate through the bowl-shaped nanostructure may be configured as a field emitter or a vertical field effect transistor. A method of separating nanoparticles of a desired size employs an array of bowl-shaped structures.Type: GrantFiled: February 8, 2008Date of Patent: December 13, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Christopher J. Summers, Xudong Wang, Elton D Graugnard, Jeffrey King
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Publication number: 20110302395Abstract: A method and data processing system for managing running of instructions in a program. A processor of the data processing system receives a monitoring instruction of a monitoring unit. The processor determines if at least one secondary thread of a set of secondary threads is available for use as an assist thread. The processor selects the at least one secondary thread from the set of secondary threads to become the assist thread in response to a determination that the at least one secondary thread of the set of secondary threads is available for use as an assist thread. The processor changes profiling of running of instructions in the program from the main thread to the assist thread.Type: ApplicationFiled: June 8, 2010Publication date: December 8, 2011Applicant: INTERNATIONAL BUSINESS MACHINES CORPORATIONInventors: Ronald P. Hall, Venkat R. Indukuru, Alexander E. Mericas, Balaram Sinharoy, Zhong L. Wang
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Patent number: 8053376Abstract: In a method of making a polymer structure on a substrate a layer of a first polymer, having a horizontal top surface, is applied to a surface of the substrate. An area of the top surface of the polymer is manipulated to create an uneven feature that is plasma etched to remove a first portion from the layer of the first polymer thereby leaving the polymer structure extending therefrom. A light emitting structure includes a conductive substrate from which an elongated nanostructure of a first polymer extends. A second polymer coating is disposed about the nanostructure and includes a second polymer, which includes a material such that a band gap exists between the second polymer coating and the elongated nanostructure. A conductive material coats the second polymer coating. The light emitting structure emits light when a voltage is applied between the conductive substrate and the conductive coating.Type: GrantFiled: June 26, 2009Date of Patent: November 8, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Xudong Wang, Jenny R. Morber, Jin Liu
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Patent number: 8039834Abstract: A semiconducting device includes a substrate, a piezoelectric wire, a structure, a first electrode and a second electrode. The piezoelectric wire has a first end and an opposite second end and is disposed on the substrate. The structure causes the piezoelectric wire to bend in a predetermined manner between the first end and the second end so that the piezoelectric wire enters a first semiconducting state. The first electrode is coupled to the first end and the second electrode is coupled to the second end so that when the piezoelectric wire is in the first semiconducting state, an electrical characteristic will be exhibited between the first electrode and the second electrode.Type: GrantFiled: June 8, 2007Date of Patent: October 18, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Xudong Wang, Jinhui Song, Jun Zhou, Jr-Hau He
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Patent number: 8003982Abstract: An electric power generator includes a first conductive layer, a plurality of semiconducting piezoelectric nanostructures, a second conductive layer and a plurality of conductive nanostructures. The first conductive layer has a first surface from which the semiconducting piezoelectric nanostructures extend. The second conductive layer has a second surface and is parallel to the first conductive layer so that the second surface faces the first surface of the first conductive layer. The conductive nanostructures depend downwardly therefrom.Type: GrantFiled: December 18, 2008Date of Patent: August 23, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Sheng Xu
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Patent number: 7982370Abstract: A small scale electrical generator includes an elongated substrate and a first piezoelectric fine wire. The first piezoelectric fine wire is disposed along a surface of the substrate. The first piezoelectric fine wire has a first end and a spaced-apart second end. A first conductive contact secures the first end of the fine wire to a first portion of the substrate and a second conductive contact secures the second end of the fine wire to a second portion of the substrate. A fabric made of interwoven strands that includes fibers from which piezoelectric nanowires extend radially therefrom and conductive nanostructures extend therefrom is configured to generate electricity.Type: GrantFiled: September 12, 2008Date of Patent: July 19, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, Xudong Wang, Yong Qin, Rusen Yang
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Publication number: 20110168969Abstract: A method of making nanostructures using a self-assembled monolayer of organic spheres is disclosed. The nanostructures include bowl-shaped structures and patterned elongated nanostructures. A bowl-shaped nanostructure with a nanorod grown from a conductive substrate through the bowl-shaped nanostructure may be configured as a field emitter or a vertical field effect transistor. A method of separating nanoparticles of a desired size employs an array of bowl-shaped structures.Type: ApplicationFiled: February 8, 2008Publication date: July 14, 2011Applicant: GEORGIA TECH RESEARCH CORPORATIONInventors: Zhong L. Wang, Christopher J. Summers, Xudong Wang, Elton D. Graugnard, Jeffrey King
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Patent number: 7975363Abstract: A probe includes a substrate and a tetragonal structure disposed on the substrate that has four end points. Three of the end points are disposed adjacent to the substrate. A fourth of the end points extends outwardly and substantially normal to the substrate. In a method of making a probe tip, a plurality of tetrapods are grown and at least one of the tetrapods is placed on a substrate at a selected location. The tetrapod is affixed to the substrate at the selected location.Type: GrantFiled: June 10, 2008Date of Patent: July 12, 2011Assignee: Georgia Tech Research CorporationInventors: Zhong L. Wang, William L. Hughes, Brent A. Buchine