公开(公告)号：US20230341302A1

公开(公告)日：2023-10-26

申请号：US18302248

申请日：2023-04-18

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Byungyoon Chung ,  Kisun Kim

IPC: G01N1/40

CPC classification number: G01N1/405

Abstract: A disclosed micro pre-concentrator includes a base substrate having a trench, and a 3D nano-shell composite disposed in the trench and having pores that are ordered and connected to each other. The 3D nano-shell composite includes a 3D nano-shell support defined by a thin film extending three-dimensionally and a polymeric layer formed along a surface of the 3D nano-shell support. The micro pre-concentrator may increase adsorption amount of gas. In addition, since it may be uniformly heated in a short time, it is possible to release gas at a high density in a short time.

公开(公告)号：US12166211B2

公开(公告)日：2024-12-10

申请号：US17541227

申请日：2021-12-02

Applicant: Korea Advanced Institute of Science and Technology ,  Korea University Research and Business Foundation ,  Daegu Gyeongbuk Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Gayea Hyun ,  Yong-Mook Kang ,  Mihui Park ,  Seonyong Jo ,  Yong Min Lee ,  Joonam Park ,  Seungwon Jung

IPC: H01M4/66 ,  H01M4/04 ,  H01M4/62 ,  H01M10/052

Abstract: According to an embodiment, a porous electrode comprises a three-dimensional nanostructured porous catalyst film including a catalyst material promoting an oxygen reduction and evolution reactions, having an aligned pore structure, and having an upper surface and a lower surface opening the pore structure and a porous current collecting layer interfacially adhered to the three-dimensional nanostructured porous catalyst film by a binder polymer.

公开(公告)号：US20220074899A1

公开(公告)日：2022-03-10

申请号：US17422781

申请日：2019-10-02

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Youngsuk Shim ,  Donghwi Cho ,  Jade Nadine Ang

IPC: G01N30/52 ,  B01D15/20 ,  G01N30/60

Abstract: A disclosed micro-separator for gas chromatography includes a base substrate having a trench, a channel column disposed in the trench, and a cover member combined with the base substrate and covering the channel column. The channel column includes a stationary phase having pores ordered and three-dimensionally connected to each other.

公开(公告)号：US12055528B2

公开(公告)日：2024-08-06

申请号：US17422781

申请日：2019-10-02

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Youngsuk Shim ,  Donghwi Cho ,  Jade Nadine Ang

IPC: G01N30/52 ,  B01D15/20 ,  G01N30/60 ,  G01N30/02

CPC classification number: G01N30/52 ,  B01D15/20 ,  G01N30/6095 ,  G01N2030/025 ,  G01N2030/521 ,  G01N2030/525

Abstract: A disclosed micro-separator for gas chromatography includes a base substrate having a trench, a channel column disposed in the trench, and a cover member combined with the base substrate and covering the channel column. The channel column includes a stationary phase having pores ordered and three-dimensionally connected to each other.

公开(公告)号：US12070736B2

公开(公告)日：2024-08-27

申请号：US17046042

申请日：2019-02-19

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Donghwi Cho ,  Junyong Park

IPC: B01D53/00 ,  B01D53/04 ,  B01J20/06 ,  B01J20/08 ,  B01J20/28 ,  G01N33/00 ,  G03F1/26

CPC classification number: B01J20/28095 ,  B01D53/0438 ,  B01J20/06 ,  B01J20/08 ,  G01N33/0011 ,  B01D2259/40096 ,  G01N33/0019 ,  G03F1/26

Abstract: The disclosed pre-concentrator comprises: a base substrate having a trench; a metal layer conformally disposed along the inner surface of the trench; and a three-dimensional porous nanostructure disposed on the metal layer in the trench and having aligned pores connected to each other in three dimensions. The pre-concentrator can improve the concentration performance of a sample and the thermal desorption efficiency of a concentrated sample.

公开(公告)号：US20220057353A1

公开(公告)日：2022-02-24

申请号：US17403389

申请日：2021-08-16

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seokwoo Jeon ,  Donghwi Cho ,  Youngsuk Shim

IPC: G01N27/12 ,  G01N33/00

Abstract: A gas sensor includes a first electrode disposed on a substrate, a second electrode disposed on the substrate and spaced apart from the first electrode, and a sensitive member disposed on the substrate. The sensitive member contacts first and second electrodes and has a porous structure from a three-dimensional (3D) arrangement of shells including a gas-sensitive material. A thickness of the sensitive member is 5 μm to 10 μm, and a thickness of the shells is 10 nm to 40 nm.

公开(公告)号：US12050314B2

公开(公告)日：2024-07-30

申请号：US17344173

申请日：2021-06-10

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Donghwi Cho ,  Sanghyeon Nam ,  Youngsuk Shim

IPC: G02B26/00 ,  E06B9/24 ,  G02B5/02 ,  G02B26/02 ,  G03F7/20

CPC classification number: G02B26/023 ,  E06B9/24 ,  G02B5/0236 ,  G03F7/2045 ,  E06B2009/2417

Abstract: A stretchable transparency-adjusting film includes an inner elastic part having a three-dimensional network shape and including a first elastomer, an inorganic thin film surrounding the inner elastic part, and an outer elastic part surrounding the inorganic thin film and including a second elastomer. A scattering unit defined by the inner elastic part, the inorganic thin film and the outer elastic part in a cross-section is orientated in an inclined direction to a vertical direction and a horizontal direction.

公开(公告)号：US12006457B2

公开(公告)日：2024-06-11

申请号：US17290795

申请日：2019-10-31

Applicant: Korea Advanced Institute of Science and Technology

Inventor： Seokwoo Jeon ,  Minsu Park ,  Hyewon Yoon

IPC: C09K11/02 ,  C09K11/65 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

CPC classification number: C09K11/02 ,  C09K11/65 ,  H10K50/115 ,  B82Y20/00 ,  B82Y40/00

Abstract: The disclosed graphene quantum dot composite includes a dielectric matrix including a metal oxynitride, and a graphene quantum dot dispersed in the dielectric matrix. The graphene quantum dot composite can reduce the aggregation-caused photoluminescence quenching of graphene quantum dots, and can improve a photoluminescence quantum yields of a graphene quantum dot.

公开(公告)号：US11906457B2

公开(公告)日：2024-02-20

申请号：US17403389

申请日：2021-08-16

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seokwoo Jeon ,  Donghwi Cho ,  Youngsuk Shim

IPC: G01N27/12 ,  G01N33/00

CPC classification number: G01N27/128 ,  G01N27/125 ,  G01N33/0027

Abstract: A gas sensor includes a first electrode disposed on a substrate, a second electrode disposed on the substrate and spaced apart from the first electrode, and a sensitive member disposed on the substrate. The sensitive member contacts first and second electrodes and has a porous structure from a three-dimensional (3D) arrangement of shells including a gas-sensitive material. A thickness of the sensitive member is 5 μm to 10 μm, and a thickness of the shells is 10 nm to 40 nm.

公开(公告)号：US20230170493A1

公开(公告)日：2023-06-01

申请号：US17729773

申请日：2022-04-26

Applicant: KOREA ADVANCED INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Seokwoo Jeon ,  Youngjin Ham

IPC: H01M4/80 ,  H01M4/62 ,  H01M4/04 ,  H01M4/60 ,  H01M4/139

CPC classification number: H01M4/80 ,  H01M4/60 ,  H01M4/139 ,  H01M4/0428 ,  H01M4/0438 ,  H01M4/624 ,  H01M4/625 ,  H01M4/626 ,  H01M2004/021

Abstract: An ordered porous nano-network electrode includes a conductive three-dimensional structure having ordered and interconnected pores, and an active layer disposed on a surface of the conductive three-dimensional structure to surround the pores and including an organic active material having a redox center. An amount of the organic active material in a unit area is 0.1 mg/cm2 to 30 mg/cm2.