NMR relaxation and magnetic properties of superparamagnetic nanoworms (pages 318–322)
Yves Gossuin, Sabrina Disch, Quoc L. Vuong, Pierre Gillis, Raphaël P. Hermann, Ji-Ho Park and Michael J. Sailor
Version of Record online: 19 MAY 2010 | DOI: 10.1002/cmmi.387
In this work, the magnetic and NMR relaxation properties of linear clusters of maghemite particles – called nanoworms – are studied. After the usual saturation, the magnetization of the worms is still increasing, which results in an appreciable increase in the transverse relaxivity at high magnetic fields. The transverse relaxation of the worms is more efficient than for the isolated grains, which is confirmed by computer simulations. The nanoworms thus constitute a promising T2 agent for cellular and molecular imaging.