dorsal/arxiv
View SchemaApplication of atomic magnetometry in magnetic particle detection
| Authors | S. Xu, M. H. Donaldson, A. Pines, S. M. Rochester, D. Budker, V. V. Yashchuk |
|---|---|
| Categories | |
| ArXiv ID | physics/0609197 |
| URL | https://arxiv.org/abs/physics/0609197 |
| DOI | 10.1063/1.2400077 |
Abstract
We demonstrate the detection of magnetic particles carried by water in a continuous flow using an atomic magnetic gradiometer. Studies on three types of magnetic particles are presented: a single cobalt particle (diameter ~150 um, multi-domain), a suspension of superparamagnetic magnetite particles (diameter \~1 um), and ferromagnetic cobalt nanoparticles (diameter ~10 nm, 120 kA/m magnetization). Estimated detection limits are 20 um diameter for a single cobalt particle at a water flow rate 30 ml/min, 5x10^3 magnetite particles at 160 ml/min, and 50 pl for the specific ferromagnetic fluid at 130 ml/min. Possible applications of our method are discussed.
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"date_created": "2026-03-02T18:01:14.641000Z",
"date_modified": "2026-03-02T18:01:14.641000Z",
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"abstract": "We demonstrate the detection of magnetic particles carried by water in a\ncontinuous flow using an atomic magnetic gradiometer. Studies on three types of\nmagnetic particles are presented: a single cobalt particle (diameter ~150 um,\nmulti-domain), a suspension of superparamagnetic magnetite particles (diameter\n\\~1 um), and ferromagnetic cobalt nanoparticles (diameter ~10 nm, 120 kA/m\nmagnetization). Estimated detection limits are 20 um diameter for a single\ncobalt particle at a water flow rate 30 ml/min, 5x10^3 magnetite particles at\n160 ml/min, and 50 pl for the specific ferromagnetic fluid at 130 ml/min.\nPossible applications of our method are discussed.",
"arxiv_id": "physics/0609197",
"authors": [
"S. Xu",
"M. H. Donaldson",
"A. Pines",
"S. M. Rochester",
"D. Budker",
"V. V. Yashchuk"
],
"categories": [
"physics.ins-det",
"physics.atom-ph"
],
"doi": "10.1063/1.2400077",
"title": "Application of atomic magnetometry in magnetic particle detection",
"url": "https://arxiv.org/abs/physics/0609197"
},
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