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AssigneeThe Regents of the University of California
InventorsAnna Parker, Jonathan King, Christophoros Vassiliou, Alexander Pines, Claudia Avalos, Birgit Hausmann
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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.
A polarizable diamond material for transfer of nuclear spin polarization comprising 12C, 13C, substitutional nitrogen, and nitrogen vacancy defects in a 13C, crystalline lattice, the polarizable diamond material comprising a diamond crystallite powder comprising crystallites having a diameter between 500 nm and 100 μm;
A method of obtaining a nuclear magnetic resonance spectrum of a sample, the method comprising:
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