Electron paramagnetic resonance microscopy using spins in diamond under ambient conditions

David A. Simpson (), Robert G. Ryan, Liam T. Hall, Evgeniy Panchenko, Simon C. Drew, Steven Petrou, Paul S. Donnelly, Paul Mulvaney and Lloyd C. L. Hollenberg ()
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David A. Simpson: University of Melbourne
Robert G. Ryan: The University of Melbourne
Liam T. Hall: University of Melbourne
Evgeniy Panchenko: University of Melbourne
Simon C. Drew: The University of Melbourne
Steven Petrou: University of Melbourne
Paul S. Donnelly: The University of Melbourne
Paul Mulvaney: The University of Melbourne
Lloyd C. L. Hollenberg: University of Melbourne

Nature Communications, 2017, vol. 8, issue 1, 1-8

Abstract: Abstract Magnetic resonance spectroscopy is one of the most important tools in chemical and bio-medical research. However, sensitivity limitations typically restrict imaging resolution to ~ 10 µm. Here we bring quantum control to the detection of chemical systems to demonstrate high-resolution electron spin imaging using the quantum properties of an array of nitrogen-vacancy centres in diamond. Our electron paramagnetic resonance microscope selectively images electronic spin species by precisely tuning a magnetic field to bring the quantum probes into resonance with the external target spins. This provides diffraction limited spatial resolution of the target spin species over a field of view of 50 × 50 µm2 with a spin sensitivity of 104 spins per voxel or ∼100 zmol. The ability to perform spectroscopy and dynamically monitor spin-dependent redox reactions at these scales enables the development of electron spin resonance and zepto-chemistry in the physical and life sciences.

Date: 2017
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DOI: 10.1038/s41467-017-00466-y

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