Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond
Magnetic imaging with ensembles of nitrogen-vacancy (NV) centres in diamond is a recently developed technique that allows for quantitative vector field mapping. Here we uncover a source of artefacts in the measured magnetic field in situations where the magnetic sample is placed in close proximity (...
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| Format: | Article |
| Language: | English |
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MDPI AG
2018-04-01
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| Series: | Sensors |
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| Online Access: | http://www.mdpi.com/1424-8220/18/4/1290 |
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| author | Jean-Philippe Tetienne David A. Broadway Scott E. Lillie Nikolai Dontschuk Tokuyuki Teraji Liam T. Hall Alastair Stacey David A. Simpson Lloyd C. L. Hollenberg |
| author_facet | Jean-Philippe Tetienne David A. Broadway Scott E. Lillie Nikolai Dontschuk Tokuyuki Teraji Liam T. Hall Alastair Stacey David A. Simpson Lloyd C. L. Hollenberg |
| author_sort | Jean-Philippe Tetienne |
| collection | DOAJ |
| description | Magnetic imaging with ensembles of nitrogen-vacancy (NV) centres in diamond is a recently developed technique that allows for quantitative vector field mapping. Here we uncover a source of artefacts in the measured magnetic field in situations where the magnetic sample is placed in close proximity (a few tens of nm) to the NV sensing layer. Using magnetic nanoparticles as a test sample, we find that the measured field deviates significantly from the calculated field, in shape, amplitude and even in sign. By modelling the full measurement process, we show that these discrepancies are caused by the limited measurement range of NV sensors combined with the finite spatial resolution of the optical readout. We numerically investigate the role of the stand-off distance to identify an artefact-free regime, and discuss an application to ultrathin materials. This work provides a guide to predict and mitigate proximity-induced artefacts that can arise in NV-based wide-field magnetic imaging, and also demonstrates that the sensitivity of these artefacts to the sample can make them a useful tool for magnetic characterisation. |
| first_indexed | 2024-04-14T02:02:45Z |
| format | Article |
| id | doaj.art-aae39615f70142babcdf6402484d18d3 |
| institution | Directory Open Access Journal |
| issn | 1424-8220 |
| language | English |
| last_indexed | 2024-04-14T02:02:45Z |
| publishDate | 2018-04-01 |
| publisher | MDPI AG |
| record_format | Article |
| series | Sensors |
| spelling | doaj.art-aae39615f70142babcdf6402484d18d32022-12-22T02:18:48ZengMDPI AGSensors1424-82202018-04-01184129010.3390/s18041290s18041290Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in DiamondJean-Philippe Tetienne0David A. Broadway1Scott E. Lillie2Nikolai Dontschuk3Tokuyuki Teraji4Liam T. Hall5Alastair Stacey6David A. Simpson7Lloyd C. L. Hollenberg8School of Physics, The University of Melbourne, Melbourne 3010, AustraliaSchool of Physics, The University of Melbourne, Melbourne 3010, AustraliaSchool of Physics, The University of Melbourne, Melbourne 3010, AustraliaCentre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Melbourne 3010, AustraliaNational Institute for Materials Science, Tsukuba, Ibaraki 305-0044, JapanSchool of Physics, The University of Melbourne, Melbourne 3010, AustraliaCentre for Quantum Computation and Communication Technology, School of Physics, The University of Melbourne, Melbourne 3010, AustraliaSchool of Physics, The University of Melbourne, Melbourne 3010, AustraliaSchool of Physics, The University of Melbourne, Melbourne 3010, AustraliaMagnetic imaging with ensembles of nitrogen-vacancy (NV) centres in diamond is a recently developed technique that allows for quantitative vector field mapping. Here we uncover a source of artefacts in the measured magnetic field in situations where the magnetic sample is placed in close proximity (a few tens of nm) to the NV sensing layer. Using magnetic nanoparticles as a test sample, we find that the measured field deviates significantly from the calculated field, in shape, amplitude and even in sign. By modelling the full measurement process, we show that these discrepancies are caused by the limited measurement range of NV sensors combined with the finite spatial resolution of the optical readout. We numerically investigate the role of the stand-off distance to identify an artefact-free regime, and discuss an application to ultrathin materials. This work provides a guide to predict and mitigate proximity-induced artefacts that can arise in NV-based wide-field magnetic imaging, and also demonstrates that the sensitivity of these artefacts to the sample can make them a useful tool for magnetic characterisation.http://www.mdpi.com/1424-8220/18/4/1290quantum sensingdiamondnitrogen-vacancy centremagnetic imagingoptically detected magnetic resonance |
| spellingShingle | Jean-Philippe Tetienne David A. Broadway Scott E. Lillie Nikolai Dontschuk Tokuyuki Teraji Liam T. Hall Alastair Stacey David A. Simpson Lloyd C. L. Hollenberg Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond Sensors quantum sensing diamond nitrogen-vacancy centre magnetic imaging optically detected magnetic resonance |
| title | Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond |
| title_full | Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond |
| title_fullStr | Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond |
| title_full_unstemmed | Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond |
| title_short | Proximity-Induced Artefacts in Magnetic Imaging with Nitrogen-Vacancy Ensembles in Diamond |
| title_sort | proximity induced artefacts in magnetic imaging with nitrogen vacancy ensembles in diamond |
| topic | quantum sensing diamond nitrogen-vacancy centre magnetic imaging optically detected magnetic resonance |
| url | http://www.mdpi.com/1424-8220/18/4/1290 |
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