公开(公告)号：US10060990B2

公开(公告)日：2018-08-28

申请号：US14768898

申请日：2013-03-08

Applicant: Korea Research Institute of Standards and Science

Inventor： Ki Woong Kim ,  Yong Ho Lee ,  Kwon Kyu Yu ,  Seong-Joo Lee

IPC: G01N27/72 ,  G01R33/00 ,  H05K9/00 ,  G01R33/025 ,  H01F13/00

CPC classification number: G01R33/0076 ,  G01R33/025 ,  H01F13/003 ,  H05K9/0069

Abstract: The present invention relates to a shield apparatus and a shield method for measuring a subtle magnetic field. More specifically, the present invention relates to a shield apparatus having a precise magnetic sensor therein, for shielding an external magnetic field in a subtle magnetic field measurement apparatus including a magnetic field generation apparatus for exciting a sample, the shield apparatus for measuring a subtle magnetic field, including: a shield wall provided with a high-conductivity metal layer of high conductivity being partitioned into a plurality of segments and having a high-frequency shield property and a closed high-permeability soft magnetic layer spaced apart from the high-conductivity metal layer by a predetermined distance, so as to seal a measurement space.

公开(公告)号：US09903925B2

公开(公告)日：2018-02-27

申请号：US13921724

申请日：2013-06-19

Applicant: Korea Research Institute of Standards and Science

Inventor： Ki Woong Kim ,  Seong-Joo Lee ,  Chan Seok Kang ,  Seong-min Hwang ,  Yong-Ho Lee

IPC: G01V3/00 ,  G01R33/36 ,  G01R33/28 ,  G01R33/44 ,  G01R33/62 ,  G01R33/30 ,  G01R33/32 ,  G01R33/48

CPC classification number: G01R33/36 ,  G01R33/282 ,  G01R33/307 ,  G01R33/326 ,  G01R33/3607 ,  G01R33/445 ,  G01R33/4826 ,  G01R33/62

Abstract: Provided are a low-field nuclear magnetic resonance device and a low-field nuclear magnetic resonance method. The low-field nuclear magnetic resonance device includes a dynamic nuclear polarization (DNP) amplification unit to amplify the nuclear polarization of hydrogen atoms of water using a DNP-possible substance (DNP substance) to provide the amplified nuclear polarization to a measurement target, a sensor unit to measure a magnetic resonance signal of the measurement target using a SQUID sensor or an optically-pumped atomic magnetometer, and a measurement field coil to apply a measurement field to the measurement target. The DNP amplification unit is separated from the measurement target, the sensor unit, and the measurement field coil.

公开(公告)号：US20140232400A1

公开(公告)日：2014-08-21

申请号：US14262251

申请日：2014-04-25

Applicant: Korea Research Institute of Standards and Science

Inventor： Kiwoong Kim ,  Chan-Seok Kang ,  Seong-Joo Lee ,  Yong-ho Lee ,  Kwon-Kyu Yu

IPC: G01R33/44

CPC classification number: G01R33/448 ,  G01N24/08 ,  G01R33/326 ,  G01R33/445

Abstract: Provided are an object discrimination method and an object discrimination apparatus using an ultra-low magnetic field nuclear magnetic resonance (NMR). The method includes measuring the respective spin-lattice relaxation times at a plurality of strengths of prepolarization magnetic fields with respect to a measurement target and classifying the measurement target using the spin-lattice relaxation times.

Abstract translation: 提供了一种使用超低磁场核磁共振（NMR）的物体识别方法和物体识别装置。 该方法包括在相对于测量目标的多个极化强度的强度下测量相应的自旋晶格弛豫时间，并使用自旋晶格弛豫时间对测量目标进行分类。