Publications by authors named "Ioannis Rabias"
Ultra-small dextran coated maghemite nanoparticles are synthesized via a low temperature modified co-precipitation method. A monoethylene glycol/water solution of 1:1 molar ratios and a fixed apparatus is used at a constant temperature of 5-10 degrees C. The growth of nanoparticles is prohibited due to low temperature synthesis and differs from usual thermal decomposition methods via Ostwald ripening.
View Article and Find Full Text PDFOne of the most significant challenges implementing colloidal magnetic nanoparticles in medicine is the efficient heating of microliter quantities by applying a low frequency alternating magnetic field. The ultimate goal is to accomplish nonsurgically the treatment of millimeter size tumors. Here, we demonstrate the synthesis, characterization, and the in vitro as well as in vivo efficiency of a dextran coated maghemite (gamma-Fe(2)O(3)) ferrofluid with an exceptional response to magnetic heating.
View Article and Find Full Text PDFArticle Synopsis
- Researchers studied how different coatings affect interactions between particles in ferrofluids using multiple advanced techniques.
- They looked at various concentrations of ferrofluids, ranging from dense (40 mg/mL) to dilute (4 mg/mL), to assess behaviors like aging and spin-glass.
- The nanoparticles, with a size of 7-8 nm and a 20 nm gummic acid coating, were effective in preventing particle clumping and maintaining stability in dense ferrofluids by eliminating magnetic interactions that typically cause aging effects.