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Abstract #0689

Distinguishing magnetic nanoparticles by r2/r1

Veronica Clavijo Jordan 1,2 and Kevin M Bennett 3

1 University of Hawaii at Manoa, Honolulu, HI, United States, 2 Arizona State University, Tempe, AZ, United States, 3 University of Hawaii at Manoa, HI, United States

In this work we have developed a novel technique to chemically tune the magnetic properties of the iron crystal inside apoferritin. By tuning their properties from paramagnetic to superparamagnetic, we introduce a set of particles with unique r 2 /r 1 combinations. These magnetic signatures can be extracted with a unique scanning technique that result in simultaneous detection of nanoparticle agents and thus of targets at nM concentrations.

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