Figure 3From: Carbon-coated iron oxide nanoparticles as contrast agents in magnetic resonance imagingFTIR spectra for bare iron oxide (a) and carbon-coated iron oxide (b) nanoparticles, respectively. The bands at 1,700 and 1,610 cm-1 in the spectra of carbon-coated iron oxide are associated with the C = O and C = C vibrations, respectively.Back to article page