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：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：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.