Dresden 2026 – wissenschaftliches Programm
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MA: Fachverband Magnetismus
MA 15: Focus Session: Quantum Sensing with Solid State Spin defects I (joint session TT/MA)
MA 15.3: Topical Talk
Dienstag, 10. März 2026, 10:30–11:00, HSZ/0003
Nitrogen vacancy centers in diamond as novel sensing and imaging tool for magnetic nanostructures, in life science and chemistry — Sebastian Westrich1, Nikhita Khera1, Emma Resmann1, Ephraim Spindler1, Kristin Kühl1, Alena Erlenbach1, Mathias Weiler1, Georg von Freymann1, Artur Widera1, Maria Wächtler2, Stefanie Müller-Schüssele3, and •Elke Neu-Ruffing1 — 1Department of Physics and Research Center Optimas, RPTU Kaiserslautern Landau, Erwin-Schrödinger-Straße 56 67663 Kaiserslautern — 2Institut für Physikalische Chemie, Christian-Albrechts-Universität zu Kiel — 3Department of Biology, RPTU Kaiserslautern Landau
Nitrogen vacancy centers (NV centers) locally probe magnetic fields, electric fields and temperature. Advantages of NV sensors include their sensitivity for fluctuating magnetic fields, which can be harnessed e.g. to detect free radicals. Additionally, near field based energy transfer serves as sensing resource to detect optically-active dipoles in close proximity. The talk will summarize our work on using scanning NV-based magnetometry to characterize magnetic nanostructures, including calibrating the scanning NV’s position with respect to the sample. We highlight work on imaging frustrated magnetic systems (spin ice) as well as magnetic structures obtained via Direct Laser Writing. As another route towards broadening the field of applicability, we demonstrate for the first time near field energy transfer between NV centers and a naturally occuring fluorophore, namely chlorophyll. We furthermore explore routes to employ NV centers as sensor in photocatalysis.
Keywords: color centers; quantum sensing; magnetic structures; FRET; radical detection