Application of atomic magnetometry in magnetic particle detection

TitleApplication of atomic magnetometry in magnetic particle detection
Publication TypeJournal Article
Year of Publication2006
AuthorsXu S., Donaldson M.H, Pines A, Rochester S.M, Budker D., Yashchuk V.V
JournalApplied Physics Letters
Volume89
Issue22
Date PublishedNov 27
ISBN Number0003-6951
Accession NumberWOS:000242538500151
Keywordssystem
Abstract

The authors 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 similar to 150 mu m, multidomain), a suspension of superparamagnetic magnetite particles (diameter similar to 1 mu m), and ferromagnetic cobalt nanoparticles (diameter similar to 10 nm). Estimated detection limits are 20 mu m diameter for a single cobalt particle at a water flow rate of 30 ml/min, 5x10(3) magnetite particles at 160 ml/min, and 50 pl for the ferromagnetic fluid of cobalt nanoparticles at 130 ml/min. Possible applications of their method are discussed.

URL<Go to ISI>://WOS:000242538500151
DOI10.1063/1.2400077
Short TitleApplication of atomic magnetometry in magnetic particle detection
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