公开(公告)号：US12142255B2

公开(公告)日：2024-11-12

申请号：US17777465

申请日：2020-11-11

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Won Jae Choi ,  Miso Kim ,  Jae Yub Hyun

IPC: G10K11/30 ,  G02B1/00 ,  G10K11/24

Abstract: A gradient-index phononic crystal flat lens which controls the behavior of an acoustic wave having a designated frequency. The gradient-index phononic crystal flat lens may include one or more super cells each having a plurality of layers stacked in a vertical direction according to a target gradient index profile, wherein each of the layers is composed of an aggregate in which unit cells having scatterers formed with the same size in the centers thereof are arranged in a horizontal direction. The one or more super cells may each include a divider provided between the neighboring layers, and configured to force the acoustic wave to propagate in the horizontal direction within the gradient-index phononic crystal flat lens.

公开(公告)号：US20240353382A1

公开(公告)日：2024-10-24

申请号：US18138040

申请日：2023-04-22

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Nam Goo KANG

IPC: G01N30/86 ,  G01N1/22

CPC classification number: G01N30/8665 ,  G01N1/2273 ,  G01N2030/025

Abstract: The present application provides a verification method and system of a sample introduction device dedicated to gas chromatography for precisely measuring a concentration of atmospheric greenhouse gas. The verification method of a sample introduction device dedicated to gas chromatography for precisely measuring a concentration of atmospheric greenhouse gas includes the steps of: 1) calculating, by a bias size calculation unit, a degree of bias in a tedlar bag using a correlation between a bias of Pbag to Pcyl and a bias of xbag to xcyl; and 2) determining, by a device performance determination unit, a device having the smallest value of a size of the bias calculated from the bias size calculation unit as an optimal device.

公开(公告)号：US20240345196A1

公开(公告)日：2024-10-17

申请号：US18621157

申请日：2024-03-29

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Youngseob SEO

IPC: G01R33/58

CPC classification number: G01R33/58

Abstract: A magnetic resonance imaging (MRI) vibration measurement device for measuring vibrations of an object inserted into an MRI scanner, includes: a human phantom holding apparatus including a human phantom inserted into the MRI scanner in a direction (z-axis, head-to-foot direction); a light source which emits light; a mirror structure which emits the light to the human phantom and provides light reflected by the human phantom; an optical sensor which measures the reflected light to detect z-axis direction vibrations of the human phantom; and a vibration sensor part which is disposed in the human phantom holding apparatus and detects vibrations in both x-axis and y-axis directions which are perpendicular to each other and orthogonal to the z-axis.

公开(公告)号：US12013393B2

公开(公告)日：2024-06-18

申请号：US16498326

申请日：2018-10-10

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Eun-Ah You ,  Wansun Kim ,  Tae Geol Lee

IPC: G01N33/553 ,  B82Y30/00 ,  G01N33/543 ,  B82B1/00 ,  B82Y5/00 ,  B82Y15/00 ,  B82Y40/00 ,  G01N21/65

CPC classification number: G01N33/54346 ,  G01N33/553 ,  B82B1/008 ,  B82Y5/00 ,  B82Y15/00 ,  B82Y40/00 ,  G01N21/658

Abstract: Provided is a method of preparing Raman-active nanoparticles, which includes a) preparing a metal nanocore having a nano-star shape from a first reaction solution in which a first metal precursor is mixed with a buffer solution; b) fixing a Raman reporter in the metal nanocore; and c) forming a metal shell, which surrounds the nanocore in which the Raman reporter is fixed, from a second reaction solution in which a second metal precursor is mixed with the nanocore in which the Raman reporter is fixed. The Raman reporter has a binding affinity for each of a first metal of the metal nanocore and a second metal of the metal shell.

公开(公告)号：US11852581B2

公开(公告)日：2023-12-26

申请号：US17338539

申请日：2021-06-03

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Kyung Joong Kim ,  Gyea Young Kwak ,  Taegun Kim ,  Hyungung Yu ,  Seung Mi Lee

IPC: G01N21/27 ,  G01Q40/02 ,  B82Y35/00 ,  G01Q60/24 ,  H01J37/28

CPC classification number: G01N21/274 ,  G01Q40/02 ,  B82Y35/00 ,  G01Q60/24 ,  H01J37/28

Abstract: Provided is a method of calibrating a nano measurement scale using a standard material including: measuring widths of a plurality of nanostructures included in the standard material and having pre-designated certified values of different sizes by a microscope; determining measured values for the widths of each of the plurality of nanostructures measured by the microscope based on a predetermined criterion; and calibrating a measurement scale of the microscope based on the certified values and the measured values.

公开(公告)号：US11802263B2

公开(公告)日：2023-10-31

申请号：US16640849

申请日：2018-08-22

Applicant: KOREA INSTITUTE OF INDUSTRIAL TECHNOLOGY ,  CEFO CO., LTD. ,  KOREA RESEARCH INSTITUTE OF CHEMICAL TECHNOLOGY ,  KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Dongmok Lee ,  Woojong Lee ,  Woojin Kim ,  Hyunsook Park ,  Sunray Lee ,  Kiyoung Kim ,  Sungbum Park ,  Kwangrok Kim ,  Byumseok Koh ,  Kyongjin Choi ,  Hyejin Nam ,  Dukjin Kang

IPC: C12M1/32 ,  C12N5/0775

CPC classification number: C12M1/32 ,  C12M23/12 ,  C12N5/0667 ,  C12N2502/1157 ,  C12N2502/1382 ,  C12N2513/00 ,  C12N2533/40

Abstract: The present invention relates to a culture vessel for three-dimensional cell cultivation and a three-dimensional cell co-cultivation method using the same. The culture vessel comprises a well formed by a column positioned thereon and at least one support protruding from the column within the well. In contrast to conventional techniques, the present invention allows cells to be cultured at a position spaced from a culture vessel, thus enjoying the advantage of smoothly supplying oxygen necessary for three-dimensional cell culture structures.

公开(公告)号：US11735397B2

公开(公告)日：2023-08-22

申请号：US17222937

申请日：2021-04-05

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Hyo Chang Lee ,  Jung Hyung Kim ,  Hee Jung Yeom

IPC: H01J37/32

CPC classification number: H01J37/3222 ,  H01J37/32311 ,  H01J37/32935 ,  H01J2237/24585

Abstract: Disclosed herein is a device for measuring a plasma ion density, which includes a transceiver antenna configured to apply and receive a microwave, of which a frequency is varied, to and from plasma, and a frequency analyzer configured to analyze a frequency of the microwave received from the transceiver antenna and measure a cut-off frequency, wherein the frequency of the microwave applied to the plasma is varied in the range of 100 kHz to 500 MHz.

公开(公告)号：US11703505B2

公开(公告)日：2023-07-18

申请号：US16622175

申请日：2018-05-31

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Seung Hoon Nahm ,  Nam Hee Lee ,  Kwon Sang Ryu ,  Un Bong Baek

IPC: G01N33/551 ,  G01N29/02 ,  G01N29/036 ,  H01L29/16

CPC classification number: G01N33/551 ,  G01N29/022 ,  G01N29/036 ,  H01L29/1606

Abstract: The present invention relates to a nano-dynamic biosensor and a fabrication method therefor. A biosensor according to the present invention comprises a substrate having a hollow structure and a graphene layer formed thereon wherein a probe material is bound to the surface of the graphene layer and the resonance vibration of the hollow structure formed in the substrate is modulated as the probe material increases in weight when a target material to be detected is coupled to the probe material without being labeled, whereby the biosensor is expected to take advantage of the modulation to measure the coupling of the target material including vaccinia virus with high sensitivity on a femtogram (10−15 g) level.

公开(公告)号：US20230168176A1

公开(公告)日：2023-06-01

申请号：US17763279

申请日：2021-08-10

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Ji Hun MUN ,  Sang Woo KANG

IPC: G01N15/14

CPC classification number: G01N15/1429 ,  G01N2015/1486 ,  G01N2015/1493

Abstract: The present invention relates to particle measuring apparatus and a particle measuring method, whereby particle counts per size range can be measured with a high accuracy using a laser power scanning in which lasers of several powers are sequentially irradiated. First, minimum powered lasers capable of measuring particles having more than relevant size are irradiated to a particle measurement space for a predetermined time in response to plural counts of each mutually different particle size, and the counts of particles per size are measured by detecting a scattered light. Furthermore, the counts of particles belonging to each size range can be accurately calculated through an algorithm using the actually measured value.

公开(公告)号：US20230006130A1

公开(公告)日：2023-01-05

申请号：US17583478

申请日：2022-01-25

Applicant: KOREA RESEARCH INSTITUTE OF STANDARDS AND SCIENCE

Inventor： Seung Mo Yang ,  Chan Yong Hwang ,  Kyoung Woong Moon

IPC: H01L43/02 ,  H01L27/22 ,  H01L43/10

Abstract: The present disclosure relates to an apparatus for generating, erasing, and moving a skyrmion in a magnetic thin film. The apparatus for generating, erasing, and moving the skyrmion may include: a first electrode to which a first voltage for generating and erasing the skyrmion is applied; a second electrode to which a second voltage for moving the generated skyrmion is applied; a free layer having one end connected to a ground and the other end connected to the second electrode; a pinned layer which is connected to the first electrode; and a barrier layer which is provided between the free layer and the pinned layer and includes a conducting path connecting the free layer and the pinned layer.