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    Specialized diamond materials for NMR applications
    1.
    发明授权
    Specialized diamond materials for NMR applications 有权

    公开(公告)号：US10983184B2

    公开(公告)日：2021-04-20

    申请号：US15850392

    申请日：2017-12-21

    申请人： The Regents of the University of California

    发明人： Anna Parker ,  Jonathan King ,  Christophoros Vassiliou ,  Alexander Pines ,  Claudia Avalos ,  Birgit Hausmann

    IPC分类号： G01R33/28 ,  G01R33/44 ,  C01B32/25 ,  G01N24/08 ,  G01R33/46 ,  B81C1/00 ,  G01R33/62 ,  G01N24/12

    摘要： Polarizable diamond materials and methods for obtaining nuclear magnetic resonance spectra of samples external to the diamond materials are described. The diamond materials can include 12C, 13C, substitutional nitrogen, and nitrogen vacancy defects in a crystalline lattice, wherein the substitutional nitrogen concentration is between 10 ppm and 200 ppm, the nitrogen vacancy concentration is between 10 ppb and 10 ppm, and the 13C concentration is greater than 1.1% and not more than 25%. Methods for obtaining nuclear magnetic resonance spectra can include optically pumping a diamond material to generate electron spin hyperpolarization in nitrogen vacancy centers, transferring the electron spin hyperpolarization to nuclei of the sample, and generating a nuclear magnetic resonance spectrum by applying a magnetic field to the sample, exciting the sample with a radio frequency pulse, and detecting a nuclear magnetic resonance response from the sample.

    Wide dynamic range magnetic field cycler and ultra portable optical nanodiamond hyperpolarizer
    3.
    发明授权
    Wide dynamic range magnetic field cycler and ultra portable optical nanodiamond hyperpolarizer 有权

    公开(公告)号：US11531076B2

    公开(公告)日：2022-12-20

    申请号：US16761462

    申请日：2018-11-01

    申请人： THE REGENTS OF THE UNIVERSITY OF CALIFORNIA

    发明人： Ashok Ajoy ,  Emanuel Druga ,  Alexis Morabe ,  Kristina Song Liu ,  Alexander Pines ,  Raffi Nazaryan

    IPC分类号： G01R33/28 ,  G01R33/30 ,  G01R33/34

    摘要： A system can include: a superconducting or permanent magnet; a high field portion corresponding to the superconducting or permanent magnet, wherein the high field has a range of 0.1-20 T; a low field portion positioned outside of the superconducting or permanent magnet, wherein the low field has a range of 0.01 nT-100 mT; a shuttling mechanism configured to deliver a sample between the low field portion and the high field portion; and a polarization sub-assembly configured to hyperpolarize the sample while the sample is within the low field portion. A device can be configured to cause nuclear spin hyperpolarization in diamond particles such that the hyperpolarization is transferable to at least one of an external liquid or an external solid. A process of hyperpolarizing substances can include applying optical illumination to the substance, irradiating the substance with a series of microwave signals as one of either a single signal or as a frequency comb to hyperpolarize the nuclei in the substance, and relaying polarization to nuclear spins of one of a surrounding solid or fluid.