Patents by Inventor Soojin Oh
Soojin Oh 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: 8002958Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.Type: GrantFiled: November 4, 2005Date of Patent: August 23, 2011Assignees: University of North Carolina at Chapel Hill, Xintek, Inc.Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Patent number: 7887689Abstract: A method for attaching nanostructure-containing material onto a sharp tip of an object includes forming a suspension of pre-formed nanostructure-containing material in a liquid medium. An electrode is immersed in the suspension. The sharp tip of the object is arranged to be in contact with the suspension. A voltage is applied to the immersed electrode and to the sharp tip. The nanostructure-containing material attaches to the sharp tip of the object.Type: GrantFiled: May 10, 2004Date of Patent: February 15, 2011Assignees: The University of North Carolina at Chapel Hill, Xintek, Inc.Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Patent number: 7455757Abstract: A method for depositing a patterned coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) masking at least a portion of at least one surface of the substrate (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes or is electrically connected to at least one electrode; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing.Type: GrantFiled: July 10, 2003Date of Patent: November 25, 2008Assignee: The University of North Carolina at Chapel HillInventors: Soojin Oh, Otto Z. Zhou
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Publication number: 20080199626Abstract: A method for the self assembly of a macroscopic structure with a pre-formed nano object is provided. The method includes processing a nano object to a desired aspect ratio and chemical functionality and mixing the processed nano object with a solvent to form a suspension. Upon formation of the suspension, a substrate is inserted into the suspension. By evaporation of the solvent, changing the pH value of the suspension, or changing the temperature of the suspension, the nano objects within the suspension deposit onto the substrate in an orientational order. In addition, a seed crystal may be used in place of the substrate thereby forming single-crystals and free-standing membranes of the nano-objects.Type: ApplicationFiled: May 25, 2006Publication date: August 21, 2008Inventors: Otto Z. Zhou, Hideo Shimoda, Soojin Oh
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Publication number: 20080099339Abstract: A method of depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution of suspension of coating the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.Type: ApplicationFiled: June 11, 2007Publication date: May 1, 2008Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Publication number: 20080006534Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.Type: ApplicationFiled: November 4, 2005Publication date: January 10, 2008Applicant: The University of North Carolina at Chapel HillInventors: Otto Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Patent number: 7252749Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.Type: GrantFiled: November 30, 2001Date of Patent: August 7, 2007Assignee: The University of North Carolina at Chapel HillInventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Patent number: 7147894Abstract: A method for the self assembly of a macroscopic structure with a pre-formed nano object is provided. The method includes processing a nano object to a desired aspect ratio and chemical functionality and mixing the processed nano object with a solvent to form a suspension. Upon formation of the suspension, a substrate is inserted into the suspension. By either evaporation of the solvent, changing the pH value of the suspension, or changing the temperature of the suspension, the nano objects within the suspension deposit onto the substrate in an orientational order. In addition, a seed crystal may be used in place of the substrate thereby forming single-crystals and free-standing membranes of the nano-objects.Type: GrantFiled: March 25, 2002Date of Patent: December 12, 2006Assignee: The University of North Carolina at Chapel HillInventors: Otto Z. Zhou, Hideo Shimoda, Soojin Oh
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Patent number: 6969690Abstract: Methods and apparatus are described for patterned deposition of nanostructure-containing materials by self-assembly and related articles. According to an exemplary embodiment self-assembly method for depositing nanostructure-containing materials includes forming a nanostructure-containing material. The nanostructure-containing material is chemically functionalized and dispersed in a liquid medium to form a suspension. At least a portion of a substrate having a surface that can attract the functionalized nanostructure-containing material is brought into contact with the suspension. The substrate is separated from the suspension. The nanostructure-containing material adheres to the portion of the substrate when separated from the suspension. According to another exemplary embodiment, hydrophilic and hydrophobic regions are formed on the surface of the substrate before bringing the substrate into contact with the suspension.Type: GrantFiled: March 18, 2004Date of Patent: November 29, 2005Assignee: The University of North Carolina at Chapel HillInventors: Otto Z. Zhou, Soojin Oh, Jian Zhang, Yuan Cheng, Hideo Shimoda
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Publication number: 20050133372Abstract: A method for attaching nanostructure-containing material onto a sharp tip of an object includes forming a suspension of pre-formed nanostructure-containing material in a liquid medium. An electrode is immersed in the suspension. The sharp tip of the object is arranged to be in contact with the suspension. A voltage is applied to the immersed electrode and to the sharp tip. The nanostructure-containing material attaches to the sharp tip of the object.Type: ApplicationFiled: May 10, 2004Publication date: June 23, 2005Applicants: The University of North CarolinaInventors: Otto Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Publication number: 20040241896Abstract: Methods and apparatus are described for patterned deposition of nanostructure-containing materials by self-assembly and related articles. According to an exemplary embodiment self-assembly method for depositing nanostructure-containing materials includes forming a nanostructure-containing material. The nanostructure-containing material is chemically functionalized and dispersed in a liquid medium to form a suspension. At least a portion of a substrate having a surface that can attract the functionalized nanostructure-containing material is brought into contact with the suspension. The substrate is separated from the suspension. The nanostructure-containing material adheres to the portion of the substrate when separated from the suspension. According to another exemplary embodiment, hydrophilic and hydrophobic regions are formed on the surface of the substrate before bringing the substrate into contact with the suspension.Type: ApplicationFiled: March 18, 2004Publication date: December 2, 2004Applicant: The University of North Carolina at Chapel HillInventors: Otto Z. Zhou, Soojin Oh, Jian Zhang, Yuan Cheng, Hideo Shimoda
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Publication number: 20040055892Abstract: A method for depositing a patterned coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) masking at least a portion of at least one surface of the substrate (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes or is electrically connected to at least one electrode; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing.Type: ApplicationFiled: July 10, 2003Publication date: March 25, 2004Applicant: University of North Carolina at Chapel HillInventors: Soojin Oh, Otto Z. Zhou
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Publication number: 20030180472Abstract: A method for the self assembly of a macroscopic structure with a preformed nano object is provided. The method includes processing a nano object to a desired aspect ratio and chemical functionality and mixing the processed nano object with a solvent to form a suspension. Upon formation of the suspension, a substrate is inserted into the suspension. By either evaporation of the solvent, changing the pH value of the suspension, or changing the temperature of the suspension, the nano objects within the suspension deposit onto the substrate in an orientational order. In addiiton, a seed crystal may be used in place of the substrate thereby forming single-crystals and free-standing membranes of the nano-objects.Type: ApplicationFiled: March 25, 2002Publication date: September 25, 2003Inventors: Otto Zhou, Hideo Shimoda, Soojin Oh
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Publication number: 20030102222Abstract: A method for depositing a coating of a nanostructure material onto a substrate includes: (1) forming a solution or suspension of containing the nanostructure material; (2) selectively adding “chargers” to the solution; (3) immersing electrodes in the solution, the substrate upon which the nanostructure material is to be deposited acting as one of the electrodes; (4) applying a direct and/or alternating current electrical field between the two electrodes for a certain period of time thereby causing the nanostructure materials in the solution to migrate toward and attach themselves to the substrate electrode; and (5) subsequent optional processing of the coated substrate.Type: ApplicationFiled: November 30, 2001Publication date: June 5, 2003Inventors: Otto Z. Zhou, Bo Gao, Guozhen Yue, Soojin Oh
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Patent number: D944519Type: GrantFiled: October 4, 2019Date of Patent: March 1, 2022Assignee: ETERNALGROUP CO., LTD.Inventors: Daun Jung, Soojin Oh