A compact, portable device for microscopic magnetic imaging based on diamond quantum sensors
Fuente:
arXiv
Saved in:
| Main Authors: | , , , , , |
|---|---|
| Format: | Preprint |
| Published: |
2024
|
| Subjects: | |
| Online Access: | |
| Tags: |
Add Tag
No Tags, Be the first to tag this record!
|
| _version_ | 1866916345639075840 |
|---|---|
| author | Shaji, Alex Rietwyk, Kevin J. Robertson, Islay O. Reineck, Philipp Broadway, David A. Tetienne, Jean-Philippe |
| author_facet | Shaji, Alex Rietwyk, Kevin J. Robertson, Islay O. Reineck, Philipp Broadway, David A. Tetienne, Jean-Philippe |
| contents | Magnetic imaging based on ensembles of diamond nitrogen-vacancy quantum sensors has emerged as a useful technique for the spatial characterisation of magnetic materials and current distributions. However, demonstrations have so far been restricted to laboratory-based experiments using relatively bulky apparatus and requiring manual handling of the diamond sensing element, hampering broader adoption of the technique. Here we present a simple, compact device that can be deployed outside a laboratory environment and enables robust, simplified operation. It relies on a specially designed sensor head that directly integrates the diamond sensor while incorporating a microwave antenna and all necessary optical components. This integrated sensor head is complemented by a small control unit and a laptop computer that displays the resulting magnetic image. We test the device by imaging a magnetic sample, demonstrating a spatial resolution of 4 $μ$m over a field of view exceeding 1 mm, and a best sensitivity of 45 $μ$T/$\sqrt{\rm Hz}$ per ($5\,μ$m)$^2$ pixel. Our portable magnetic imaging instrument may find use in situations where taking the sample to be measured to a specialist lab is impractical or undesirable. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2405_02021 |
| institution | arXiv |
| publishDate | 2024 |
| record_format | arxiv |
| spellingShingle | A compact, portable device for microscopic magnetic imaging based on diamond quantum sensors Shaji, Alex Rietwyk, Kevin J. Robertson, Islay O. Reineck, Philipp Broadway, David A. Tetienne, Jean-Philippe Materials Science Magnetic imaging based on ensembles of diamond nitrogen-vacancy quantum sensors has emerged as a useful technique for the spatial characterisation of magnetic materials and current distributions. However, demonstrations have so far been restricted to laboratory-based experiments using relatively bulky apparatus and requiring manual handling of the diamond sensing element, hampering broader adoption of the technique. Here we present a simple, compact device that can be deployed outside a laboratory environment and enables robust, simplified operation. It relies on a specially designed sensor head that directly integrates the diamond sensor while incorporating a microwave antenna and all necessary optical components. This integrated sensor head is complemented by a small control unit and a laptop computer that displays the resulting magnetic image. We test the device by imaging a magnetic sample, demonstrating a spatial resolution of 4 $μ$m over a field of view exceeding 1 mm, and a best sensitivity of 45 $μ$T/$\sqrt{\rm Hz}$ per ($5\,μ$m)$^2$ pixel. Our portable magnetic imaging instrument may find use in situations where taking the sample to be measured to a specialist lab is impractical or undesirable. |
| title | A compact, portable device for microscopic magnetic imaging based on diamond quantum sensors |
| topic | Materials Science |
| url | https://arxiv.org/abs/2405.02021 |