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.Electron paramagnetic resonance spectroscopy has important scientific and medical uses but improving the resolution of conventional methods requires cryogenic, vacuum environments. Simpson et al. show nitrogen vacancy centres can be used for sub-micronmetre imaging with improved sensitivity in ambient conditions.
journal_name
Nat Communjournal_title
Nature communicationsauthors
Simpson DA,Ryan RG,Hall LT,Panchenko E,Drew SC,Petrou S,Donnelly PS,Mulvaney P,Hollenberg LCLdoi
10.1038/s41467-017-00466-ysubject
Has Abstractpub_date
2017-09-06 00:00:00pages
458issue
1issn
2041-1723pii
10.1038/s41467-017-00466-yjournal_volume
8pub_type
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