Imaging local diffusion in microstructures using NV-based pulsed field gradient NMR
At a Glance
Section titled āAt a Glanceā| Metadata | Details |
|---|---|
| Publication Date | 2023-08-18 |
| Journal | Science Advances |
| Authors | Fleming Bruckmaier, Robin D. Allert, Nick Ruben Neuling, Philipp Amrein, Sebastian Littin |
| Institutions | Munich Center for Quantum Science and Technology, Fraunhofer Institute for Applied Solid State Physics |
| Citations | 18 |
Abstract
Section titled āAbstractāUnderstanding diffusion in microstructures plays a crucial role in many scientific fields, including neuroscience, medicine, or energy research. While magnetic resonance (MR) methods are the gold standard for diffusion measurements, spatial encoding in MR imaging has limitations. Here, we introduce nitrogen-vacancy (NV) center-based nuclear MR (NMR) spectroscopy as a powerful tool to probe diffusion within microscopic sample volumes. We have developed an experimental scheme that combines pulsed gradient spin echo (PGSE) with optically detected NV-NMR spectroscopy, allowing local quantification of molecular diffusion and flow. We demonstrate correlated optical imaging with spatially resolved PGSE NV-NMR experiments probing anisotropic water diffusion within an individual model microstructure. Our optically detected PGSE NV-NMR technique opens up prospects for extending the current capabilities of investigating diffusion processes with the future potential of probing single cells, tissue microstructures, or ion mobility in thin film materials for battery applications.
Tech Support
Section titled āTech SupportāOriginal Source
Section titled āOriginal SourceāReferences
Section titled āReferencesā- 2020 - Efforts on enhancing the li-ion diffusion coefficient and electronic conductivity of titanate-based anode materials for advanced li-ion batteries
- 1997 - Measurement of water motion (apparent diffusion) in biological systems