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BP: Fachverband Biologische Physik

BP 11: Bioimaging and Biopspectroscopy I

BP 11.6: Vortrag

Dienstag, 13. März 2018, 11:15–11:30, H 1028

Wide-Field Nuclear Magnetic Resonance Imaging using Nitrogen-Vacancy Centers in Diamond — Florestan Ziem, •Marwa Garsi, Helmut Fedder, and Jörg Wrachtrup — 3. Physikalisches Institut, Universität Stuttgart

Electron and nuclear magnetic resonance are essential tools in the life and material sciences. Significant advances in high resolution, high sensitivity sensing at sub-cellular length scales have been shown using nitrogen-vacancy (NV) centers in diamond, promising label-free imaging and single molecule analysis. E.g. by controlling and detecting the electronic state of individual NV centers, single molecule detection [1] and nanoscale NMR with resolution of chemical shift [2] have been demonstrated. Here, we show our recent progress towards transferring these techniques to wide-field imaging using ensembles of NV centers and multiplexed quantum state detection on a CCD camera. One of our key achievements is the homogenous manipulation of all NV centers over a large area. For this, we use optimal control algorithms to shape the driving microwave pulses to accomplish parallel orchestration of NV centers in a field of view of 60 x 60 µ m². By performing nuclear magnetic wide-field imaging on solid state thin films on the diamond surface, we demonstrate an optical resolution of ∼300 nm and B-field sensitivity of 100 nT µ m^3/2 Hz^−1/2. Our results pave the way towards rapid magnetic resonance imaging with sub diffraction limited optical resolution, with the ultimate goal to understand fundamental processes at the level of single cells and organelles. [1] Lovchinsky et al, Science 351, 836 (2016). [2] Aslam et al, Science 357, 67 (2017).