¹³C hyperpolarization with nitrogen-vacancy centers in micro- and nanodiamonds for sensitive magnetic resonance applications.

ABSTRACT: Nuclear hyperpolarization is a known method to enhance the signal in nuclear magnetic resonance (NMR) by orders of magnitude. The present work addresses the ¹³C hyperpolarization in diamond micro- and nanoparticles, using the optically pumped nitrogen-vacancy center (NV) to polarize ¹³C spins at room temperature. Consequences of the small particle size are mitigated by using a combination of surface treatment improving the ¹³C relaxation (T₁) time, as well as that of NV, and applying a technique for NV illumination based on a microphotonic structure. Adjustments to the dynamical nuclear polarization sequence (PulsePol) are performed, as well as slow sample rotation, to improve the NV-¹³C polarization transfer rate. The hyperpola

SUBMITTER: Blinder R 

PROVIDER: S-EPMC11870072 | biostudies-literature | 2025 Feb

REPOSITORIES: biostudies-literature