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公开(公告)号：US11703469B2
公开(公告)日：2023-07-18
申请号：US18008722
申请日：2021-10-13
申请人： SOUTHEAST UNIVERSITY
发明人： Rui Xiao , Yuyang Fan , Chao Liu , Ming Lei , Xiangchen Kong , Weicong Xu
CPC分类号： G01N24/10 , C10G1/002 , C10G2300/1014 , C10G2300/201
摘要： The present invention discloses a rapid evaluation method for quality of lignin-pyrolyzed bio-oil and an application thereof, and particularly relates to a rapid evaluation method for quality of lignin-pyrolyzed bio-oil based on radical detection and an application thereof. The method can be used to evaluate the quality of lignin-pyrolyzed bio-oil by detecting the spin concentration of radicals in lignin char obtained by lignin pyrolysis, thus avoiding the complex processes involved in the evaluation for the quality of conventional pyrolyzed bio-oils such as, extraction, separation and detection and reducing the detection costs substantially. The detection method of the present invention is simple and easy to operate, thus achieving the rapid evaluation for the quality of lignin-pyrolyzed bio-oil. Moreover, the detection method of the present invention is non-contact detection without destructive samples, which is applicable to the rapid detection on the quality of lignin-pyrolyzed bio-oil in the field of industry and scientific research. The present invention further broadens the application fields of radical detection and contributes to the development of radical detection technology in the field of pyrolysis, and provides a reliable method for the detection of lignin-pyrolyzed bio-oil, which has good application prospect.
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公开(公告)号：US20230097890A1
公开(公告)日：2023-03-30
申请号：US17932589
申请日：2022-09-15
申请人： MICROSILICON, INC.
发明人： John LOVELL , Omar KULBRANDSTAD
IPC分类号： G01N24/10
摘要： Embodiments described herein generally relate to systems, tools, and methods for flow assurance monitoring within pipe structures. In an embodiment is provided a method of determining at least one property of a mixture flowing through a system that includes introducing an inhibitor to a fluid flowing through the system to form the mixture; exposing the mixture to electromagnetic energy to induce at least one paramagnetic response from at least one diamagnetic species present in the mixture flowing through the system; performing electron paramagnetic resonance (EPR) spectroscopy on the at least one paramagnetic response to generate an EPR spectrum; and determining the at least one property of the mixture based on the EPR spectrum. Apparatus for determining fluid properties and systems for extracting hydrocarbons from a subterranean reservoir are also provided.
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公开(公告)号：US20230071162A1
公开(公告)日：2023-03-09
申请号：US17981658
申请日：2022-11-07
IPC分类号： G01N33/543 , G01N24/10 , G01N27/74 , G01N33/536 , G01N33/553 , G01R33/26
摘要： The present application discloses methods and apparatus for detecting a complex including an analyte that include contacting a sample in a solution with a population of functionalized beads of a first type, which are magnetic functionalized beads and are functionalized to include a first moiety that associates with an analyte under suitable conditions, contacting the sample solution with a population of functionalized beads of a second type, which are functionalized to include a second moiety that associates with the analyte under suitable conditions, contact resulting in formation of a complex including one of the first type of functionalized bead, the analyte, and one of the second type of functionalized bead, and detecting the complex including the analyte by detecting magnetic fields produced by the magnetic functionalized bead and by detecting the functionalized bead of the second type associated with the analyte in the complex.
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公开(公告)号：US20230058070A1
公开(公告)日：2023-02-23
申请号：US17793357
申请日：2021-01-22
申请人： Cornell University
发明人： Gregory FUCHS , Huiyao CHEN
摘要： Embodiments described herein provide systems and methods for acoustically driving spin rotations of diamond nitrogen-vacancy (NV) centers using acoustic transducers. The acoustic transducers may comprise devices such as bulk acoustic resonators or surface acoustic resonators. The systems and methods may allow driving of ms=0 to ms=−1, ms=0 to ms=+1, ms=−1 to ms=0, and ms=+1 to ms=0 single-quantum (SQ) spin transitions without the need to apply magnetic field pulses. This may substantially reduce the size and power requirements of NV center-based sensors. The systems and methods may be used to conduct a variety of measurements, such as measurements of magnetic field, electric field, orientation, strain, or temperature.
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公开(公告)号：US20230051210A1
公开(公告)日：2023-02-16
申请号：US17881794
申请日：2022-08-05
申请人： Yangtze Delta Region Institute (Huzhou), University of Electronic Science and Technology of China
发明人： Fan DONG , Ye HE , Qin REN , Yanjuan SUN , Jianping SHENG
IPC分类号： G01N24/10
摘要： Disclosed is an in-situ vacuum reaction system for dynamically detecting defects, which includes an electron paramagnetic resonance spectrometer, an in-situ vacuum reaction chamber, a gas supply unit, a vacuum unit, an illumination unit, a temperature control unit and a mixing bottle, the in-situ vacuum reaction chamber is arranged inside a detection cavity of the electron paramagnetic resonance spectrometer, the gas supply unit is connected to the mixing bottle through a pipeline, and the mixing bottle is connected to a gas inlet of the in-situ vacuum reaction chamber through a pipeline, the vacuum unit is connected to the gas inlet of the in-situ vacuum reaction chamber through a pipeline, the illumination unit is arranged corresponding to a detachable window of the electron paramagnetic resonance spectrometer, and the temperature control unit is connected to the electron paramagnetic resonance spectrometer through a pipeline.
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56.发明申请公开(公告)号：US20230026678A1
公开(公告)日：2023-01-26
申请号：US17777684
申请日：2020-11-18
摘要： A dendrimer including a ring core moiety, a paramagnetic group, a linking moiety and a branching moiety for continuously probing and quantifying an analyte is provided together with methods, kits and devices for performing sensitive, accurate and durable measurements.
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公开(公告)号：US11346904B2
公开(公告)日：2022-05-31
申请号：US16946756
申请日：2020-07-06
发明人： Linh M. Pham , Kerry Alexander Johnson , Carson Arthur Teale , Hannah A. Clevenson , Danielle Ann Braje , Christopher Michael McNally , John Francis Barry
摘要： A magnetometer containing a crystal sensor with solid-state defects senses the magnitude and direction of a magnetic field. The solid-state defects in the crystal sensor absorb microwave and optical energy to transition between several energy states while emitting light intensity indicative of their spin states. The magnetic field alters the spin-state transitions of the solid-state defects by amounts depending on the solid-state defects' orientations with respect to the magnetic field. The optical read out, reporting the spin state of an ensemble of solid-state defects from one particular orientation class, can be used to lock microwave signals to the resonances associated with the spin-state transitions. The frequencies of the locked microwave signals can be used to reconstruct the magnetic field vector.
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公开(公告)号：US11294018B2
公开(公告)日：2022-04-05
申请号：US16644139
申请日：2018-08-21
发明人： Adrian Porch , Damien Murphy
IPC分类号： G01R33/60 , G01N22/00 , G01N24/10 , G01R33/345 , H01P7/06
摘要： Microwave resonance cavities and associated methods and apparatus are described. In one example, a cavity (100) comprises a first and a second input port (102, 104) for inputting microwave radiation at a first and a second frequency respectively. The microwave radiation at the first frequency may be to excite a sample in the cavity whereas the microwave radiation at the second frequency may be to interrogate a sample in the cavity for analysis. The cavity has dimensions such that it resonates at both the first and the second frequency.
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公开(公告)号：US20210396693A1
公开(公告)日：2021-12-23
申请号：US17281636
申请日：2019-10-01
申请人： KYOTO UNIVERSITY
摘要： In order to improve the measurement sensitivity in measurement using a color center as a sensor, a sensor element (1) has a color center in a diamond crystal structure, wherein the electron spin state of the color center is a dressed state.
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60.发明授权公开(公告)号：US11181494B2
公开(公告)日：2021-11-23
申请号：US16618573
申请日：2018-06-01
摘要： A method for generating a nuclear magnetic resonance spectrum of nuclear spin moments of a sample includes a static magnetic field permeating the sample, and a detection spin moment with a detection region surrounding the latter. The detection region extends at least partly into the sample. The method also includes an antenna element for radiating in frequency pulses for influencing the nuclear spin moments and radio-frequency pulses for influencing the detection spin moment, where a polarization step involves polarizing at least one portion of the nuclear spin moments along the magnetic field to form a longitudinal magnetization, where a transfer step involves converting the longitudinal magnetization (Mx) into a transverse magnetization (Mxy) by radiating in a frequency pulse (F) with a 90° flip angle, wherein a detection step involves radiating in a sequence of radio-frequency pulses onto the detection spin moment and subsequently detecting a signal (32′) of the transverse magnetization (Mxy) present in the detection region and storing the signal as detection result in a list. The detection step is carried out a number of times repeatedly in succession, wherein the polarization step and the transfer step and also the detection steps are carried out.
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