title: Note: Detection of a single cobalt microparticle with a microfabricated atomic magnetometer.
abstract: We present magnetic detection of a single, 2 μm diameter cobalt microparticle using an atomic magnetometer based on a microfabricated vapor cell. These results represent an improvement by a factor of 10(5) 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 0.17 μm(3).
authors: Department of Physics, University of California at Berkeley, Berkeley, California 94720-7300, USA. dmaser@berkeley.edu
authors: D
authors: D
authors: Maser
authors: S
authors: S
authors: Pandey
authors: H
authors: H
authors: Ring
authors: M P
authors: MP
authors: Ledbetter
authors: S
authors: S
authors: Knappe
authors: J
authors: J
authors: Kitching
authors: D
authors: D
authors: Budker
mesh_terms: D003035:Cobalt / Q000737:chemistry*; D018130:Diamond / Q000737:chemistry; D060306:Magnetometry / Q000379:methods*; D055616:Microtechnology / Q000379:methods*; D009584:Nitrogen / Q000737:chemistry; D059629:Signal-To-Noise Ratio; D014835:Volatilization
chemical_list: D003035:Cobalt; D018130:Diamond; D009584:Nitrogen