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. Author manuscript; available in PMC: 2011 Jun 15.
Published in final edited form as: Adv Mater. 2008 May 5;20(9):1630–1635. doi: 10.1002/adma.200800004

Figure 1.

Figure 1

Physical properties of magnetic NWs and conventional spherical nanoparticles (nanospheres; NSs) preparations. a) TEM image showing the wormlike nanostructure. More than 80% of the particles have a contorted linear appearance with a hydrodynamic length of 50–80 nm. Scale bar is 30 nm. (Inset: atomic force microscopy image showing the elongated shape. Scale bar is 100 nm). b) Magnetization curves for NWs, NSs, and Feridex. c) T2 relaxation rates as a function of iron concentration (mm Fe) for NWs, NSs, and Feridex. d) T2-weighted MR images of NWs, NSs, and Feridex with different concentrations.