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Tuyển tập báo cáo các nghiên cứu khoa học quốc tế ngành hóa học dành cho các bạn yêu hóa học tham khảo đề tài: Synthesis of Bio-Compatible SPION–based Aqueous Ferrofluids and Evaluation of RadioFrequency Power Loss for Magnetic Hyperthermia | Nanoscale Res Lett 2010 5 1706-1711 DOI 10.1007 s11671-010-9729-4 NANO IDEAS Synthesis of Bio-Compatible SPION-based Aqueous Ferrofluids and Evaluation of RadioFrequency Power Loss for Magnetic Hyperthermia A. P. Reena Mary T. N. Narayanan Vijutha Sunny D. Sakthikumar Yasuhiko Yoshida P. A. Joy M. R. Anantharaman Received 9 May 2010 Accepted 2 August 2010 Published online 15 August 2010 The Author s 2010. This article is published with open access at Springerlink.com Abstract Bio-compatible magnetic fluids having high saturation magnetization find immense applications in various biomedical fields. Aqueous ferrofluids of super-paramagnetic iron oxide nanoparticles with narrow size distribution high shelf life and good stability is realized by controlled chemical co-precipitation process. The crystal structure is verified by X-ray diffraction technique. Particle sizes are evaluated by employing Transmission electron microscopy. Room temperature and low-temperature magnetic measurements were carried out with Superconducting Quantum Interference Device. The fluid exhibits good magnetic response even at very high dilution 6.28 mg cc . This is an advantage for biomedical applications since only a small amount of iron is to be metabolised by body organs. Magnetic field induced transmission measurements carried out at photon energy of diode laser 670 nm exhibited excellent linear dichroism. Based on the structural and magnetic measurements the power loss for the magnetic A. P. Reena Mary T. N. Narayanan V. Sunny M. R. Anantharaman Department of Physics Cochin University of Science and Technology Cochin 682022 India e-mail mraiyer@yahoo.com D. Sakthikumar Y. Yoshida Bio-Nano Electronics Research Centre Department of Applied Chemistry Toyo University Tokyo Japan P. A. Joy National Chemical Laboratories Pune India Present Address T. N. Narayanan Department of Mechanical Engineering and Materials Science Rice University Houston TX USA nanoparticles under study is evaluated .
