公开(公告)号：US20250003912A1

公开(公告)日：2025-01-02

申请号：US18746488

申请日：2024-06-18

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Minah SEO ,  Yong-Sang RYU ,  Jinwoo LEE ,  Geon LEE ,  Jongsu LEE

IPC: G01N27/12 ,  G01N27/407

Abstract: The object of the present invention is to provide a nanogap-based hydrogen sensor in which a nanogap is formed on a substrate and a trace amount of hydrogen gas leakage can be detected in a non-contact manner using the nanogap, and a method of manufacturing the same. In order to achieve the above object, the present invention is characterized by including: a metamaterial manufactured by forming a metal nanoslot pattern on a wafer; a catalyst layer deposited on the surface of the metamaterial to form a nanogap inside the metal nanoslot; and a protective layer formed on the catalyst layer to protect the catalyst layer.

公开(公告)号：US20190025204A1

公开(公告)日：2019-01-24

申请号：US15935055

申请日：2018-03-26

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong-Sang RYU ,  Chulki KIM ,  Young Min JHON ,  Sin-Doo LEE ,  Eui-Sang YU ,  Jae Hun KIM

IPC: G01N21/41 ,  H01J37/305 ,  H01L31/09 ,  G01N21/552 ,  G01N21/27

Abstract: A method for manufacturing an optical sensor includes forming a reflective metal layer on a substrate, forming an insulator layer on the reflective metal layer, inducing self-assembly of a metal nanostructure layer on the insulator layer, and selectively etching the insulator layer through a reactive ion etching process to form a plurality of pillars and a plurality of spaces defined by the plurality of pillars. The method for manufacturing a plasmonic optical sensor according to this embodiment facilitates the formation of nanostructures difficult to pattern and form on the large scale at a low cost, and provides a plasmonic optical sensor with repeatability.

公开(公告)号：US20240027414A1

公开(公告)日：2024-01-25

申请号：US18107763

申请日：2023-02-09

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong-Sang RYU ,  Yusin PAK ,  Jongsu LEE ,  Taehyun KIM ,  Eui-Sang YU

IPC: G01N33/00 ,  G01N21/78 ,  B32B15/04

CPC classification number: G01N33/005 ,  G01N21/78 ,  B32B15/043 ,  G01N2021/7763

Abstract: The disclosure relates to a hydrogen sensing device capable of visually detecting the presence of hydrogen through a color change according to a water-forming reaction by inducing the water-forming reaction between hydrogen and oxygen at the interface between a lower metal layer and a dielectric layer under a structure in which a lower metal layer, a dielectric layer, and an upper metal layer are sequentially stacked, and visually sensing the color change caused by the generated water.

公开(公告)号：US20230333083A1

公开(公告)日：2023-10-19

申请号：US17979249

申请日：2022-11-02

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong-Sang RYU ,  Eui-Sang YU ,  Eui Tae JEONG

IPC: G01N33/487 ,  B82Y15/00 ,  G01N27/447

CPC classification number: G01N33/48721 ,  B82Y15/00 ,  G01N27/44791

Abstract: A method for detecting a nanoplastic using a vertical nanogap electrode and a Raman spectroscopic device, includes, in a state where a vertical nanogap electrode is provided in aquatic environment in which a nanoplastic exists, forming a nanoplastic aggregate having a size of 1 μm or more by applying an alternating voltage of a specific frequency to the vertical nanogap electrode, and collecting and concentrating the nanoplastic in a collector of the vertical nanogap electrode, and performing Raman spectroscopy on the nanoplastic aggregate concentrated in the collector of the vertical nanogap electrode to detect the nanoplastic constituting the nanoplastic aggregate.

公开(公告)号：US20210389228A1

公开(公告)日：2021-12-16

申请号：US17138919

申请日：2020-12-31

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Minah SEO ,  Yong-Sang RYU ,  Eui-Sang YU ,  Taikjin LEE ,  Hyun Seok SONG

IPC: G01N15/14

Abstract: Provided is a high efficiency and high sensitivity particle capture type terahertz sensing system. The particle capture type terahertz sensing system includes a sensing substrate to capture particles, and a terahertz sensor to emit terahertz electromagnetic waves to the sensing substrate to sense the particles, wherein the sensing substrate includes a base substrate and a particle capture structure layer formed on the base substrate, the particle capture structure layer includes a plurality of slits for focusing the terahertz electromagnetic waves, the particle capture structure layer captures the particles in the plurality of slits using dielectrophoresis, and an area in which the terahertz electromagnetic waves converge to the plurality of slits matches an area in which the particles are captured in the plurality of slits through the dielectrophoresis.

公开(公告)号：US20210086194A1

公开(公告)日：2021-03-25

申请号：US17023685

申请日：2020-09-17

Applicant: KOREA INSTITUTE OF SCIENCE AND TECHNOLOGY

Inventor： Yong-Sang RYU ,  Eui-Sang YU ,  Taehyun KIM ,  Sang Moon KIM ,  Jongsu LEE

IPC: B03C3/09 ,  B03C3/68 ,  B03C3/47 ,  B03C3/70 ,  F24F3/16

Abstract: An air conditioning apparatus is provided. The air conditioning apparatus includes: a filter configured to have a first conductor layer, an insulating layer having a thickness in the range of 5 nm to 1000 nm, and a second conductor layer which are sequentially stacked, and include a plurality of holes penetrating through the first conductor layer, the insulating layer, and the second conductor layer; a fan assembly configured to suck air from the outside and provide the sucked air to the filter; a power supply device configured to provide alternating current power between the first conductor layer and the second conductor layer; and a processor configured to control the power supply device to selectively vary a frequency or a voltage magnitude of the alternating current power provided to the filter.