Patents by Inventor Seon-Jeong Kim
Seon-Jeong Kim 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: 10849733Abstract: The present invention relates to a glucose-reactive artificial muscle, and more particularly, to a carbon nanotube, a hydrogel-based glucose-reactive artificial muscle which has a reversible volume change due to variations in glucose concentration, a method of forming the same, a rotary artificial muscle using the same, and a method of detecting glucose. The glucose-reactive artificial muscle according to the present invention may sense variations in glucose concentration with high sensitivity within a short time by providing reversible twisting using the swelling and shrinkage of hydrogels, which occur due to a change in internal anionic charges, caused by the bonding between a boronic acid introduced to the hydrogels and glucose.Type: GrantFiled: January 26, 2017Date of Patent: December 1, 2020Assignee: Industry-University Cooperation Foundation Hanyang UniversityInventors: Seon Jeong Kim, Sachan Ko
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Patent number: 10777367Abstract: A fibrous electrode includes a carbon nanotube sheet which is coated on an elastic fiber and has a buckle structure. Thus, the fibrous electrode may maintain a fiber shape, may be light and small and may maintain excellent conductivity even when variously deformed. In addition, the fibrous electrode has high elasticity and thus is capable of being variously deformed (e.g., bent or stretched) and of being realized in the form of textile. As a result, the fibrous electrode may be effectively applied to flexible electronic devices such as implantable medical devices, microelectronic devices, Google glasses, smart watches, wearable computers, and smart clothing. Furthermore, a supercapacitor using the fibrous electrode includes flexible materials and thus is not easily damaged by external force such as tension or pressure. As a result, the supercapacitor may be applied to various fields because of its excellent flexibility.Type: GrantFiled: August 30, 2018Date of Patent: September 15, 2020Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Chang Soon Choi, Kang Min Kim
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Publication number: 20200208614Abstract: Yarn energy harvesters containing conducing nanomaterials (such as carbon nanotube (CNT) yarn harvesters) that electrochemically convert tensile or torsional mechanical energy into electrical energy. Stretched coiled yarns can generate 250 W/kg of peak electrical power when cycled up to 24 Hz, and can generate up to 41.2 J/kg of electrical energy per mechanical cycle. Unlike for other harvesters, torsional rotation produces both tensile and torsional energy harvesting and no bias voltage is required, even when electrochemically operating in salt water. Since homochiral and heterochiral coiled harvester yarns provide oppositely directed potential changes when stretched, both contribute to output power in a dual-electrode yarn.Type: ApplicationFiled: June 28, 2018Publication date: July 2, 2020Applicants: BOARD OF REGENTS, THE UNIVERSITY OF TEXAS SYSTEM, HANYANG UNIVERSITYInventors: Ray H. Baughman, Shaoli Fang, Carter S. Haines, Na Li, Jiangtao Di, Seon Jeong Kim, Shi Hyeong Kim, Keon Jung Kim, Tae Jin Mun, Changsoon Choi
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Patent number: 10458046Abstract: The present invention relates to a graphene conjugate fiber and a method for manufacturing same, and more particularly, to a conjugate fiber including graphene and a polymer, wherein a wrinkled structure of the graphene is maintained in a fiber state. The graphene conjugate fiber manufactured thereby has superior mechanical properties, is flexible, and has high utility by being manufactured as a fiber.Type: GrantFiled: February 19, 2018Date of Patent: October 29, 2019Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Seon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim
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Publication number: 20190029801Abstract: The present invention relates to a glucose-reactive artificial muscle, and more particularly, to a carbon nanotube, a hydrogel-based glucose-reactive artificial muscle which has a reversible volume change due to variations in glucose concentration, a method of forming the same, a rotary artificial muscle using the same, and a method of detecting glucose. The glucose-reactive artificial muscle according to the present invention may sense variations in glucose concentration with high sensitivity within a short time by providing reversible twisting using the swelling and shrinkage of hydrogels, which occur due to a change in internal anionic charges, caused by the bonding between a boronic acid introduced to the hydrogels and glucose.Type: ApplicationFiled: January 26, 2017Publication date: January 31, 2019Applicant: INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Seon Jeong KIM, Sachan KO
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Patent number: 10176934Abstract: The present invention relates to a carbon nanotube/manganese dioxide yarn electrode comprising: a yarn type carbon nanotube yarn which is prepared by twisting a carbon nanotube sheet and has a plurality of pores therein; and manganese dioxide deposited on a surface or in inner pores of the carbon nanotube yarn, and to a yarn type super capacitor comprising the same. The super capacitor has excellent mechanical strength and flexibility while having high specific capacity, energy density, and power density, and thus can retain superior electrochemical performances even under several modifications, such as twisting, bending, and weaving.Type: GrantFiled: December 9, 2014Date of Patent: January 8, 2019Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Chang Soon Choi
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Publication number: 20190006125Abstract: A fibrous electrode includes a carbon nanotube sheet which is coated on an elastic fiber and has a buckle structure. Thus, the fibrous electrode may maintain a fiber shape, may be light and small and may maintain excellent conductivity even when variously deformed. In addition, the fibrous electrode has high elasticity and thus is capable of being variously deformed (e.g., bent or stretched) and of being realized in the form of textile. As a result, the fibrous electrode may be effectively applied to flexible electronic devices such as implantable medical devices, microelectronic devices, Google glasses, smart watches, wearable computers, and smart clothing. Furthermore, a supercapacitor using the fibrous electrode includes flexible materials and thus is not easily damaged by external force such as tension or pressure. As a result, the supercapacitor may be applied to various fields because of its excellent flexibility.Type: ApplicationFiled: August 30, 2018Publication date: January 3, 2019Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong KIM, Chang Soon CHOI, Kang Min KIM
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Publication number: 20180374659Abstract: The present disclosure relates to a fibrous electrode and a supercapacitor including the same. In the fibrous electrode, a carbon nanotube sheet is spirally wound on a surface of an elastic fiber. Thus, the fibrous electrode may maintain a fiber shape, and an electrical connection structure in the carbon nanotube sheet may not be damaged by deformation of the elastic fiber. That is, the fibrous electrode may be reversibly changed to maintain excellent electrical conductivity. In addition, the fibrous electrode has a fiber shape having a diameter of hundreds of micrometers, and thus the fibrous electrode may be light and may have excellent durability and excellent life span characteristics.Type: ApplicationFiled: August 31, 2018Publication date: December 27, 2018Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong KIM, Chang Soon CHOI, Kang Min KIM
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Patent number: 10106420Abstract: The present invention relates to a method for manufacturing a graphene fiber and a graphene fiber manufactured thereby, comprising the following steps: a) preparing a dispersion liquid by dispersing graphene with a surfactant in a solvent; b) preparing a composite fiber by mixing the dispersion liquid with a polymer solution, wet spinning and drying same; and c) removing polymers by heat-treating or treating the composite fiber with strong acid. The graphene fiber manufactured by the method has superior electric and mechanical properties, is flexible, and can be utilized as a storage medium for energy, hydrogen, etc. due to porosity from having a wrinkled structure.Type: GrantFiled: July 7, 2016Date of Patent: October 23, 2018Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim
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Publication number: 20180274132Abstract: The present invention relates to a graphene conjugate fiber and a method for manufacturing same, and more particularly, to a conjugate fiber including graphene and a polymer, wherein a wrinkled structure of the graphene is maintained in a fiber state. The graphene conjugate fiber manufactured thereby has superior mechanical properties, is flexible, and has high utility by being manufactured as a fiber.Type: ApplicationFiled: February 19, 2018Publication date: September 27, 2018Inventors: Seon Jeong KIM, Min Kyoon SHIN, Shi Hyeong KIM
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Patent number: 9691557Abstract: Disclosed is a free-standing hybrid nanomembrane capable of energy storage. The free-standing hybrid nanomembrane includes carbon nanotube sheets and a conducting polymer coated on the carbon nanotube sheets. The carbon nanotube sheets are densified sheets formed by evaporating an alcohol from carbon nanotube aerogel sheets. The conducting polymer is coated on the carbon nanotube sheets by vapor phase polymerization. Further disclosed is a method for fabricating the free-standing hybrid nanomembrane.Type: GrantFiled: June 1, 2015Date of Patent: June 27, 2017Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Seon Jeong Kim, Shi Hyeong Kim, Min Kyoon Shin, Jae Ah Lee
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Patent number: 9514892Abstract: The present invention relates to a yarn-type micro-supercapacitor fabricated by twisting a hybrid nanomembrane coated with a conducting polymer on a carbon nanotube sheet. Thus, the yarn-type micro-supercapacitor has superior performance. Particularly, since a 2-ply electrode manufactured by being twisted together with a metal wire has very high power and energy density in liquid or solid electrolyte and also has superior mechanical strength and flexibility, the yarn-type micro-supercapacitor may be variously deformed—for example, bent, twisted, or woven—to maintain superior electrochemical performance.Type: GrantFiled: November 29, 2012Date of Patent: December 6, 2016Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Shi Hyeong Kim, Min Kyoon Shin, Jae Ah Lee
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Publication number: 20160336119Abstract: The present invention relates to a carbon nanotube/manganese dioxide yarn electrode comprising: a yarn type carbon nanotube yarn which is prepared by twisting a carbon nanotube sheet and has a plurality of pores therein; and manganese dioxide deposited on a surface or in inner pores of the carbon nanotube yarn, and to a yarn type super capacitor comprising the same. The super capacitor has excellent mechanical strength and flexibility while having high specific capacity, energy density, and power density, and thus can retain superior electrochemical performances even under several modifications, such as twisting, bending, and weaving.Type: ApplicationFiled: December 9, 2014Publication date: November 17, 2016Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITYInventors: Seon Jeong KIM, Chang Soon CHOI
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Publication number: 20160318767Abstract: The present invention relates to a method for manufacturing a graphene fiber and a graphene fiber manufactured thereby, comprising the following steps: a) preparing a dispersion liquid by dispersing graphene with a surfactant in a solvent; b) preparing a composite fiber by mixing the dispersion liquid with a polymer solution, wet spinning and drying same; and c) removing polymers by heat-treating or treating the composite fiber with strong acid. The graphene fiber manufactured by the method has superior electric and mechanical properties, is flexible, and can be utilized as a storage medium for energy, hydrogen, etc. due to porosity from having a wrinkled structure.Type: ApplicationFiled: July 7, 2016Publication date: November 3, 2016Inventors: Seon Jeong KIM, Min Kyoon SHIN, Shi Hyeong KIM
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Patent number: 9453118Abstract: The present invention relates to a graphene-based hybrid polymer composite fiber and a method for manufacturing same, and more particularly, to a hybrid composite fiber including the graphene, a carbon nanotube, and a polymer, wherein the graphene and the carbon nanotube are combined by means of self-organization through hydrogen bonding, so as to be very tough and flexible, without involving stretching, and to a method for manufacturing the hybrid composite fiber.Type: GrantFiled: March 9, 2012Date of Patent: September 27, 2016Assignee: IUCF-HYU (INDUSTRY-UNIVERSITY COOPERATION FOUNDATION HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim
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Patent number: 9251968Abstract: Disclosed is a free-standing hybrid nanomembrane capable of energy storage. The free-standing hybrid nanomembrane includes carbon nanotube sheets and a conducting polymer coated on the carbon nanotube sheets. The carbon nanotube sheets are densified sheets formed by evaporating an alcohol from carbon nanotube aerogel sheets. The conducting polymer is coated on the carbon nanotube sheets by vapor phase polymerization. Further disclosed is a method for fabricating the free-standing hybrid nanomembrane.Type: GrantFiled: December 11, 2012Date of Patent: February 2, 2016Assignee: IUCF-HYU (Industry-University Cooperation Foundation Hanyang University)Inventors: Seon Jeong Kim, Shi Hyeong Kim, Min Kyoon Shin, Jae Ah Lee
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Publication number: 20150294800Abstract: Disclosed is a free-standing hybrid nanomembrane capable of energy storage. The free-standing hybrid nanomembrane includes carbon nanotube sheets and a conducting polymer coated on the carbon nanotube sheets. The carbon nanotube sheets are densified sheets formed by evaporating an alcohol from carbon nanotube aerogel sheets. The conducting polymer is coated on the carbon nanotube sheets by vapor phase polymerization. Further disclosed is a method for fabricating the free-standing hybrid nanomembrane.Type: ApplicationFiled: June 1, 2015Publication date: October 15, 2015Inventors: Seon Jeong KIM, Shi Hyeong KIM, Min Kyoon SHIN, Jae Ah LEE
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Publication number: 20140376158Abstract: The present invention relates to a yarn-type micro-supercapacitor fabricated by twisting a hybrid nanomembrane coated with a conducting polymer on a carbon nanotube sheet. Thus, the yarn-type micro-supercapacitor has superior performance. Particularly, since a 2-ply electrode manufactured by being twisted together with a metal wire has very high power and energy density in liquid or solid electrolyte and also has superior mechanical strength and flexibility, the yarn-type micro-supercapacitor may be variously deformed—for example, bent, twisted, or woven—to maintain superior electrochemical performance.Type: ApplicationFiled: November 29, 2012Publication date: December 25, 2014Inventors: Seon Jeong Kim, Shi Hyegon Kim, Min Kyoon Shin, Jae Ah Lee
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Publication number: 20140011027Abstract: The present invention relates to a graphene conjugate fiber and a method for manufacturing same, and more particularly, to a conjugate fiber including graphene and a polymer, wherein a wrinkled structure of the graphene is maintained in a fiber state. The graphene conjugate fiber manufactured thereby has superior mechanical properties, is flexible, and has high utility by being manufactured as a fiber.Type: ApplicationFiled: March 9, 2012Publication date: January 9, 2014Applicant: IUCF-HYU (INDUSTRY-UNIVERSITY CORPERATION FOUNDATI ON HANYANG UNIVERSITY)Inventors: Seon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim
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Publication number: 20140001417Abstract: The present invention relates to a graphene-based hybrid polymer composite fiber and a method for manufacturing same, and more particularly, to a hybrid composite fiber including the graphene, a carbon nanotube, and a polymer, wherein the graphene and the carbon nanotube are combined by means of self-organization through hydrogen bonding, so as to be very tough and flexible, without involving stretching, and to a method for manufacturing the hybrid composite fiber.Type: ApplicationFiled: March 9, 2012Publication date: January 2, 2014Applicant: IUCF-HYU(Industry University Cooperation Foundati on Hanyang University)Inventors: Seon Jeong Kim, Min Kyoon Shin, Shi Hyeong Kim