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6CCVD Research

Fast, Broad-Band Magnetic Resonance Spectroscopy with Diamond Widefield Relaxometry

At a Glance

Section titled “At a Glance”
MetadataDetails
Publication Date2023-04-12
JournalACS Sensors
AuthorsCharles Mignon, Ari R. Ortiz Moreno, Hoda Shirzad, Sandeep K. Padamati, Viraj G. Damle
InstitutionsÉcole Polytechnique FĂ©dĂ©rale de Lausanne, University Medical Center Groningen
Citations7

Abstract

Section titled “Abstract”

We present an alternative to conventional Electron Paramagnetic Resonance (EPR) spectroscopy equipment. Avoiding the use of bulky magnets and magnetron equipment, we use the photoluminescence of an ensemble of Nitrogen-Vacancy centers at the surface of a diamond. Monitoring their relaxation time (or T1), we detected their cross-relaxation with a compound of interest. In addition, the EPR spectra are encoded through a localized magnetic field gradient. While recording previous data took 12 min per data point with individual NV centers, we were able to reconstruct a full spectrum at once in 3 s, over a range from 3 to 11 G. In terms of sensitivity, only 0.5 ÎŒL of a 1 ÎŒM hexaaquacopper(II) ion solution was necessary.

Tech Support

Section titled “Tech Support”

Original Source

Section titled “Original Source”

References

Section titled “References”
  1. 1998 - Frequency Dependence of EPR Sensitivity [Crossref]

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