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6CCVD Research

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

At a Glance

Section titled ā€œAt a Glanceā€
MetadataDetails
Publication Date2023-04-12
JournalACS Sensors
AuthorsCharles Mignon, Ari R. Ortiz Moreno, Hoda Shirzad, Sandeep K. Padamati, Viraj G. Damle
InstitutionsUniversity Medical Center Groningen, Ɖcole Polytechnique FĆ©dĆ©rale de Lausanne
Citations7

Abstract

Section titled ā€œAbstractā€

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 Ī¼L of a 1 Ī¼M hexaaquacopper(II) ion solution was necessary.

Tech Support

Section titled ā€œTech Supportā€

Original Source

Section titled ā€œOriginal Sourceā€

References

Section titled ā€œReferencesā€
  1. 1998 - Frequency Dependence of EPR Sensitivity [Crossref]

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