Zinc ferrite nanocrystals were prepared from an aqueous solution containing metal nitrates and various of concentrations of poly(vinyl pyrrolidone) (PVP), i.e., 0, 15, 40, and 55 g/L, as a capping agent. To stabilize the particles, they were thermally treated at 873 K, as an optimum calcination temperature. The behaviors of the polymeric precursor were analyzed by use of simultaneous thermo-gra...

In this study, we report for the first time the use of silica-coated superparamagnetic iron oxide nanoparticles (SPION) as contrast agents in biomedical photoacoustic imaging. Using frequency-domain photoacoustic correlation (the photoacoustic radar), we investigated the effects of nanoparticle size, concentration and biological media (e.g. serum, sheep blood) on the photoacoustic response in t...

Experimental details Preparation of Fe3O4 micro-spheres The mono-dispersed Fe3O4 micro-spheres were synthesized by a one-pot hydrothermal method. In a typical synthesis, FeCl3.6H2O (0.54 g), sodium citrate (1.2 g), and urea (0.2 g) were dissolved in distilled water (40 mL). Then, PAAS (0.2 g) was added under continuous stirring until it was totally dissolved. The solution was transferred to a 5...

INTRODUCTION Super-paramagnetic iron oxide (SPIO) particles can label macrophages and monocytes in circulation; the effects of these labeled cells can then be detected by T2*-weighted MRI [1]. This has enormous potential for imaging inflammatory responses in the heart, but it has been difficult to do in vivo using conventional methods for free-breathing, ungated imaging. Subspace imaging with t...

Cerium oxide nanoparticles (CeO2 NPs) are favorable in nanotechnology based on some remarkable properties. In this study, the crystalline CeO2 NPs are successfully prepared by an efficient microwave combustion (MCM) and conventional route sol-gel (CRSGM) methods. The structural morphology of the as-prepared CeO2 NPs was investigated by various spectroscopic and analytical techniques. Moreover, ...

in this study, fe 3 o 4 superparamagnetic nanoparticles were synthesized and stabilized by chitosan. then the nanoparticles were characterized by fourier transform infrared spectroscopy and transmission electron microscopy (tem). particle size distribution and zeta potential of the particles also was assessed using malvern zetasizer. the paramagnetic behaviors of the uncoated and chitosan coate...