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Title: Background-free dual-mode optical and 13C magnetic resonance imaging in diamond particles
Multimodal imaging—the ability to acquire images of an object through more than one imaging mode simultaneously—has opened additional perspectives in areas ranging from astronomy to medicine. In this paper, we report progress toward combining optical and magnetic resonance (MR) imaging in such a “dual” imaging mode. They are attractive in combination because they offer complementary advantages of resolution and speed, espe- cially in the context of imaging in scattering environments. Our approach relies on a specific material platform, microdiamond par- ticles hosting nitrogen vacancy (NV) defect centers that fluoresce brightly under optical excitation and simultaneously “hyperpolar- ize” lattice 13C nuclei, making them bright under MR imaging. We highlight advantages of dual-mode optical and MR imag- ing in allowing background-free particle imaging and describe regimes in which either mode can enhance the other. Leveraging the fact that the two imaging modes proceed in Fourier-reciprocal domains (real and k-space), we propose a sampling protocol that accelerates image reconstruction in sparse-imaging scenar- ios. Our work suggests interesting possibilities for the simulta- neous optical and low-field MR imaging of targeted diamond nanoparticles.
Authors:
Award ID(s):
1903803
Publication Date:
NSF-PAR ID:
10281837
Journal Name:
Proceedings of the National Academy of Sciences of the United States of America
Volume:
118
Issue:
21
ISSN:
0027-8424
Sponsoring Org:
National Science Foundation
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