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公开(公告)号：US20220074899A1
公开(公告)日：2022-03-10
申请号：US17422781
申请日：2019-10-02
Inventor： Seokwoo Jeon , Youngsuk Shim , Donghwi Cho , Jade Nadine Ang
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.
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Patent Agency Ranking
公开(公告)号：US12055528B2
公开(公告)日：2024-08-06
申请号：US17422781
申请日：2019-10-02
Inventor： Seokwoo Jeon , Youngsuk Shim , Donghwi Cho , Jade Nadine Ang
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.
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公开(公告)号：US12050314B2
公开(公告)日：2024-07-30
申请号：US17344173
申请日：2021-06-10
Inventor： Seokwoo Jeon , Donghwi Cho , Sanghyeon Nam , Youngsuk Shim
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.
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公开(公告)号：US11906457B2
公开(公告)日：2024-02-20
申请号：US17403389
申请日：2021-08-16
Inventor： Seokwoo Jeon , Donghwi Cho , Youngsuk Shim
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.
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公开(公告)号：US12070736B2
公开(公告)日：2024-08-27
申请号：US17046042
申请日：2019-02-19
Inventor： Seokwoo Jeon , Donghwi Cho , Junyong Park
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.
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公开(公告)号：US20220057353A1
公开(公告)日：2022-02-24
申请号：US17403389
申请日：2021-08-16
Inventor： Seokwoo Jeon , Donghwi Cho , Youngsuk Shim
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.
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