Zero- to low-field J-spectroscopy with a diamond magnetometer
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arXiv
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| Autori principali: | , , , , , , , , , , |
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| Natura: | Preprint |
| Pubblicazione: |
2025
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| author | Omar, Muhib Xu, Jingyan Kircher, Raphael Sharbati, Pouya Zhang, Shaowen Chatzidrosos, Georgios Eills, James Picazo-Frutos, Roman Budker, Dmitry Barskiy, Danila A. Wickenbrock, Arne |
| author_facet | Omar, Muhib Xu, Jingyan Kircher, Raphael Sharbati, Pouya Zhang, Shaowen Chatzidrosos, Georgios Eills, James Picazo-Frutos, Roman Budker, Dmitry Barskiy, Danila A. Wickenbrock, Arne |
| contents | We report measurements of zero- to ultra-low-field nuclear magnetic resonance (ZULF NMR) signals at frequencies of a few hertz with a diamond-based magnetic sensor. The sensing diamond is a truncated pyramid with 0.18 mm height and a 0.5 mm x 0.5mm base. The minimum stand-off distance is < 1 mm, and the sensor sensitivity is 13 pT/(Hz)^(1/2) at frequencies f above 5 Hz with 1/f-like behavior at lower frequencies. NMR signals were generated via signal amplification by reversible exchange (SABRE) parahydrogen-based hyperpolarization resulting in zero-field signals at 1.7 Hz and 3.4 Hz corresponding to the expected hetero-nuclear J-coupling pattern of acetonitrile. This work demonstrates a magnet-free platform for detecting chemically specific NMR signals at ultra-low frequencies paving the way for portable noninvasive diagnostics in microscopic sample volumes for biomedicine, industrial sensing through metal enclosures, and field-deployable quantum analytical devices. |
| format | Preprint |
| id |
arxiv_https___arxiv_org_abs_2512_05776 |
| institution | arXiv |
| publishDate | 2025 |
| record_format | arxiv |
| spellingShingle | Zero- to low-field J-spectroscopy with a diamond magnetometer Omar, Muhib Xu, Jingyan Kircher, Raphael Sharbati, Pouya Zhang, Shaowen Chatzidrosos, Georgios Eills, James Picazo-Frutos, Roman Budker, Dmitry Barskiy, Danila A. Wickenbrock, Arne Applied Physics We report measurements of zero- to ultra-low-field nuclear magnetic resonance (ZULF NMR) signals at frequencies of a few hertz with a diamond-based magnetic sensor. The sensing diamond is a truncated pyramid with 0.18 mm height and a 0.5 mm x 0.5mm base. The minimum stand-off distance is < 1 mm, and the sensor sensitivity is 13 pT/(Hz)^(1/2) at frequencies f above 5 Hz with 1/f-like behavior at lower frequencies. NMR signals were generated via signal amplification by reversible exchange (SABRE) parahydrogen-based hyperpolarization resulting in zero-field signals at 1.7 Hz and 3.4 Hz corresponding to the expected hetero-nuclear J-coupling pattern of acetonitrile. This work demonstrates a magnet-free platform for detecting chemically specific NMR signals at ultra-low frequencies paving the way for portable noninvasive diagnostics in microscopic sample volumes for biomedicine, industrial sensing through metal enclosures, and field-deployable quantum analytical devices. |
| title | Zero- to low-field J-spectroscopy with a diamond magnetometer |
| topic | Applied Physics |
| url | https://arxiv.org/abs/2512.05776 |