Note: Detection of a single cobalt microparticle with a microfabricated atomic magnetometer

D. Maser; S. Pandey; H. Ring; M. P. Ledbetter; S. Knappe; J. Kitching; D. Budker

doi:10.1063/1.3626505

Note: Detection of a single cobalt microparticle with a microfabricated atomic magnetometer

D. Maser, S. Pandey, H. Ring, M. P. Ledbetter, S. Knappe, J. Kitching, D. Budker

Research output: Contribution to journal › Article › peer-review

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Abstract

We present magnetic detection of a single, 2m diameter cobalt microparticle using an atomic magnetometer based on a microfabricated vapor cell. These results represent an improvement by a factor of 10⁵ in terms of the detected magnetic moment over previous work using atomic magnetometers to detect magnetic microparticles. The improved sensitivity is due largely to the use of small vapor cells. In an optimized setup, we predict detection limits of 0.17m₃.

Original language	English (US)
Article number	086112
Journal	Review of Scientific Instruments
Volume	82
Issue number	8
DOIs	https://doi.org/10.1063/1.3626505
State	Published - Aug 2011
Externally published	Yes

Bibliographical note

Funding Information:
Research was supported by the (U.S.) Department of Energy (DOE), Office of Basic Energy Sciences, Division of Materials Sciences and Engineering under Contract No. DE-AC02-05CH11231 (H.R.), by the National Science Foundation (NSF) under Award No. CHE-0957655 (D.M., D.B., and M.P.L.), and by the National Institute of Standards and Technology (NIST) (S.K. and J.K.). We gratefully acknowledge discussions with S. Xu and L. S. Bouchard. This work is a partial contribution of NIST, an agency of the US government, and is not subject to copyright.

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abstract = "We present magnetic detection of a single, 2m diameter cobalt microparticle using an atomic magnetometer based on a microfabricated vapor cell. These results represent an improvement by a factor of 105 in terms of the detected magnetic moment over previous work using atomic magnetometers to detect magnetic microparticles. The improved sensitivity is due largely to the use of small vapor cells. In an optimized setup, we predict detection limits of 0.17m3.",

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AU - Ledbetter, M. P.

AU - Knappe, S.

AU - Kitching, J.

AU - Budker, D.

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Note: Detection of a single cobalt microparticle with a microfabricated atomic magnetometer

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