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Using Nitrogen-Vacancy Center Enriched Nanodiamonds with Fully Integrated Overhauser Dynamic Nuclear

Comprehensive Exam

Date: Time: 2:30 pm
Jorgensen Hall
Contact: Physics Department, (402) 472-2770, paoffice@unl.edu
Yi Yang will present his comprehensive exam topic
via Zoom [https://unl.zoom.us/j/971861914 (Meeting ID: 971 861 914)]

ABSTRACT: A general review of nuclear magnetic resonance spectroscopy, dynamic nuclear polarization including Overhauser effect, polarizing agents for nuclear polarization, characteristics of negative nitrogen-vacancy centers in diamond, spin manipulations in diamond and fabrication of nanodiamond has been given in this report. A proposal for using nitrogen-vacancy center enriched nanodiamonds with fully integrated Overhauser dynamic nuclear polarization to perform high-resolution NMR spectroscopy is made including the general ideas, the apparatus, the procedure, etc.
Owning to the novel properties of NV centers in diamond arising from the ground and excited triplet states, the intermediate singlet states and the strong hyperfine interaction, optical initialization, dynamic nuclear polarization and optically detected magnetic resonance (ODMR) can be realized. Since the spin polarization transfer process induced by NV centers is not limited by the Boltzmann distribution in thermal equilibrium, dynamic nuclear polarization in a low magnetic field at room temperature is made possible. And by taking advantage of the high transition rate in the double resonance condition and the ODMR technique, microwave sources are not needed in high-resolution NMR spectroscopy. With the development of fabrication techniques for low-cost production of nanodiamonds with NV centers, the proposed NMR spectroscopy is of great potential in the emerging area of quantum sensing.

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