@MagBen: Yes, I will be using Fe3O4 magnetite nanoparticles with are superparamagnetic. However, I am not trying to image the nanoparticles; I hope to only detect their presence using a compact magnetic biosensor.
@IRstuff: That was my mistake. I meant to say that I will be using the device to...
Yes, that's what I had thought; trying to work with that system might not be the best idea. However, there are other papers (such as Lab on a Chip, Issue 13, 2011: "Miniature magnetic resonance system for point-of-care diagnostics") that utilize not the protons in water, but the relaxation time...
I hope to utilize Nuclear Magnetic Resonance to detect the relaxation rates of nanoparticles and/or of the RF dynamics of protons in water, as outlined in the paper "CMOS RF Biosensor Utilizing Nuclear Magnetic Resonance".
I am hoping to build a small and cost-effective magnetic device that can be applied to the neck to measure the presence of a small amount of magnetite nanoparticles in the bloodstream (on the order of 0.0002 to 0.002 um^3). I've looked at using permanent magnets and Helmholtz coils; however...
