公开(公告)号：US12117408B1

公开(公告)日：2024-10-15

申请号：US18467618

申请日：2023-09-14

申请人： Paramagnetix, Inc.

发明人： Nathan Newman ,  Saraansh Saxena ,  Tian Xue

IPC分类号： G01N24/10 ,  G01N33/02

CPC分类号： G01N24/10 ,  G01N33/02

摘要： An electron paramagnetic resonant (EPR) instrument able to determine chemical properties of a sample using paramagnetic resonance is provided. In one embodiment, the instrument is able to measure the paramagnetic concentration of a wide variety of practical substances, ranging from food and beverages to biological specimens and solid-state electronic materials. The disclosed device can be portable and perform a measurement faster than commonly used techniques to quantify this parameter, including methods that use vibrating sample magnetometers and currently available electron paramagnetic resonance spectrometers.

公开(公告)号：US20240302306A1

公开(公告)日：2024-09-12

申请号：US18179054

申请日：2023-03-06

申请人： KING FAHD UNIVERSITY OF PETROLEUM AND MINERALS

发明人： Muhammad KAMRAN ,  Mohamed Aly Mohamed MORSY ,  Tarek Abdelsamad Abdelrahman KANDIEL ,  Wissam IALI

IPC分类号： G01N24/10

CPC分类号： G01N24/10

摘要： A method for monitoring and evaluating the photocatalytic activity of a photocatalytic substance is described. The method includes dispersing particles of the photocatalytic substance in a 4-hydroxy-2,2,6,6-tetramethylpiperidine-N-oxyl (TEMPOL) solution to form a photocatalytic suspension; introducing a gas composition to a reactor containing the photocatalytic suspension in the dark to form a purged photocatalytic suspension; illuminating the purged photocatalytic suspension with a light to initiate a photocatalytic reaction and generate a reactive oxygen species (ROS) that is detectable by an electron paramagnetic resonance (EPR) spectrometer; introducing a portion of the purged photocatalytic suspension to the EPR cell in the cavity of the EPR spectrometer to generate an EPR signal and recirculating the portion of the purged photocatalytic suspension back to the reactor; reacting TEMPOL with the ROS to form a EPR silent compound; continuously recording the EPR signal.

公开(公告)号：US12066392B2

公开(公告)日：2024-08-20

申请号：US17922500

申请日：2021-04-19

申请人： SUMIDA CORPORATION ,  Kyoto University

发明人： Masateru Hashimoto ,  Yoshiharu Yoshii ,  Yuki Takemura ,  Norikazu Mizuochi

IPC分类号： G01N24/10 ,  G01N21/64 ,  G02B17/00

CPC分类号： G01N24/10 ,  G01N21/64 ,  G02B17/004 ,  G01N2201/0636

摘要： A substrate 1 includes a color center excited by excitation light, and at least a pair of reflection members 21a, 21b are arranged with gaps from the substrate 1. The substrate 1 causes the excitation light entering the substrate 1 to exit through its surfaces without reflection, and the reflection members 21a, 21b cause the exited excitation light to reflect at the reflection surface 21-1 or 21-2 and enter the substrate 1, and cause the excitation light to repeatedly enter and exit the substrate 1 and thereby pass through the substrate 1 only a predetermined number of times. Here, the irradiating device 4 emits the excitation light such that the excitation light is incident to the reflection surface 21-1 or 21-2 with an angle perpendicular to one axis among two axes of the reflection surface 21-1 or 21-2 and with a predetermined slant angle from the other axis.

公开(公告)号：US20240167970A1

公开(公告)日：2024-05-23

申请号：US18279792

申请日：2022-02-11

申请人： THE UNIVERSITY OF HONG KONG

发明人： Zhiqin CHU ,  Jixiang JING ,  Feng XU

IPC分类号： G01N24/00 ,  G01N24/10 ,  H01L33/02 ,  H01L33/04

CPC分类号： G01N24/006 ,  G01N24/10 ,  H01L33/025 ,  H01L33/04

摘要： A small volume optoelectronic chip contains an LED chip with a diamond having nitrogen-vacancy centers embedded therein. The LED chip generates light having a first wavelength, and the diamond with nitrogen-vacancy centers generates light having a second wavelength after excitement with light having the first wavelength. The diamond may also be on or adjacent the LED.

公开(公告)号：US20240151667A1

公开(公告)日：2024-05-09

申请号：US18222543

申请日：2023-07-17

申请人： Sonora Magnetics, Inc.

发明人： Dominic Labanowski ,  Sayeef Salahuddin

IPC分类号： G01N24/10 ,  H01P5/16

CPC分类号： G01N24/10 ,  H01P5/16

摘要： A system and method for an acoustically driven ferromagnetic resonance (ADFMR) based sensor including: a power source, that provides an electrical signal to power the system; and an ADFMR circuit, sensitive to electromagnetic fields, wherein the ADFMR circuit comprises an ADFMR device. The system functions to detect and measure external electromagnetic (EM) fields by measuring a perturbation of the electrical signal through the ADFMR circuit due to the EM fields.

公开(公告)号：US20240102951A1

公开(公告)日：2024-03-28

申请号：US18533819

申请日：2023-12-08

申请人： GOLDWAY TECHNOLOGY LIMITED

发明人： Ka Wing Cheng ,  Yau Chuen Yiu ,  Kong Chan ,  Chun Hong Sham ,  Juan Cheng ,  Koon Chung Hui

IPC分类号： G01N24/10 ,  G01N33/38 ,  G01R33/32

CPC分类号： G01N24/10 ,  G01N33/381 ,  G01R33/323

摘要： A process for determining the type of a diamond having spin properties and physical properties, said process including the steps of: (i) determining the spin properties of a diamond of unknown type, using optically detected magnetic resonance to measure the spin properties of said diamond of an unknown type, wherein the spin properties are indicative of the physical properties of the diamond; (ii) comparing the spin properties of said unknown diamond with the spin properties of a plurality of diamonds of known types; and (iii) determining the type of said diamond of unknown type upon a predetermined threshold of correlation between the spin properties of said diamond of unknown type with the spin properties of a diamond of known type of said plurality of diamonds known types.

公开(公告)号：US11921070B2

公开(公告)日：2024-03-05

申请号：US17771308

申请日：2020-10-19

申请人： Carl Zeiss AG

发明人： Nils Trautmann ,  Ulrich Vogl ,  Jörg Wrachtrup ,  Rainer Stöhr

IPC分类号： G01V3/00 ,  G01N21/64 ,  G01N24/10 ,  G01R33/00 ,  G01R33/26 ,  G01R33/60

CPC分类号： G01N24/10 ,  G01N21/6408 ,  G01R33/0041 ,  G01R33/26 ,  G01R33/60 ,  G01N2201/0697

摘要： It is an object of the invention to improve processes, apparatuses and systems for measuring a measured variable. To this end, a measured variable is measured in a measuring process on the basis of an NV center as a quantum sensor. The NV center has a plurality of quantum states and is optically excitable on the basis of an occupancy of one of the quantum states into at least one excited state of the quantum states by means of an excitation light. The at least one excited state can decay at least with emission of emission light of the NV center. In the measuring process, the NV center is irradiated by the excitation light, the excitation light having a time periodic modulation, and a respective occupancy probability and/or a respective lifetime of the quantum states depending on the measured variable and the excitation light. A phase shift is determined between the emission light of the NV center and the modulation of the excitation light and a measurement value for the measured variable is determined on the basis thereof.

公开(公告)号：US20230408607A1

公开(公告)日：2023-12-21

申请号：US18239687

申请日：2023-08-29

申请人： X Development LLC

发明人： Stefan Bogdanovic ,  Stefan Leichenauer

IPC分类号： G01R33/32 ,  G01N24/10 ,  G01R33/26

CPC分类号： G01R33/323 ,  G01R33/26 ,  G01N24/10

摘要： A magnetometer includes a sample signal device; a reference signal device; a microwave field generator operable to apply a microwave field to the sample signal device and the reference signal device; an optical source configured to emit light including light of a first wavelength that interacts optically with the sample signal device and with the reference signal device; at least one photodetector arranged to detect a sample photoluminescence signal including light of a second wavelength emitted from the sample signal device and a reference photoluminescence signal including light of the second wavelength emitted from the reference signal device, in which the first wavelength is different from the second wavelength; and a magnet arranged adjacent to the sample signal device and the reference signal device.

公开(公告)号：US11668778B2

公开(公告)日：2023-06-06

申请号：US17143630

申请日：2021-01-07

申请人： SUMIDA CORPORATION

发明人： Yoshiharu Yoshii ,  Masaki Saito ,  Norikazu Mizuochi ,  Kan Hayashi

IPC分类号： G01R33/60 ,  G01R33/34 ,  G01R33/032 ,  G01R33/12 ,  G01N24/10 ,  G01R33/32 ,  G01R33/36

CPC分类号： G01R33/60 ,  G01N24/10 ,  G01R33/032 ,  G01R33/1284 ,  G01R33/323 ,  G01R33/34 ,  G01R33/34061 ,  G01R33/36

摘要： A high-frequency magnetic field generating device includes two coils arranged with a predetermined gap in parallel with each other, the two coils (a) in between which electron spin resonance material is arranged or (b) arranged at one side from electron spin resonance material; a high-frequency power supply that generates microwave current that flows in the two coils; and a transmission line part connected to the two coils, that sets a current distribution so as to locate the two coils at positions other than a node of a stationary wave.

公开(公告)号：US20230014131A1

公开(公告)日：2023-01-19

申请号：US17847348

申请日：2022-06-23

申请人： Bruker BioSpin GmbH

发明人： Alexander KRAHN ,  Franck VINCENT

IPC分类号： G01N24/08 ,  G01R33/34 ,  G01N24/10

摘要： The invention relates to a sample cell for performing DNP-NMR measurements, for interchangeable use in an EPR microwave resonator, with the sample cell comprising a flat sample cavity for holding a liquid sample to be measured, wherein the flat sample cavity extends with a maximum length L and a maximum width W in a sample cavity plane, and extends with a maximum height H perpendicular to the sample cavity plane, with H≤ 1/15*L and H≤ 1/15*W, and an NMR coil wound around the flat sample cavity for generating an RF magnetic field B2, wherein a coil axis of the NMR coil about which the NMR coil is wound is oriented perpendicular to the sample cavity plane. The invention provides a sample cell which is easy to handle and improves the quality and the reproducibility of DNP-NMR measurements.