%0 Journal Article %J Applied Physics Letters %D 2006 %T Application of atomic magnetometry in magnetic particle detection %A Xu, S. %A Donaldson, M. H. %A Pines, A. %A Rochester, S. M. %A Budker, D. %A Yashchuk, V. V. %K system %X

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.

%B Applied Physics Letters %V 89 %8 Nov 27 %@ 0003-6951 %G English %U ://WOS:000242538500151 %N 22 %M WOS:000242538500151 %! Application of atomic magnetometry in magnetic particle detection %R Doi 10.1063/1.2400077