scholarly journals Design of Alternating Magnetic Field Generator for Magnetic Fluid Hyperthermia Research Application

2017 ◽  
Vol 0 (0) ◽  
pp. 0-0
Author(s):  
Mahdi Mohseni ◽  
Amirhossein Rajaei
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Alternating Magnetic Field ◽  
Research Application ◽  
Magnetic Fluid Hyperthermia ◽  
Magnetic Field Generator

scholarly journals Assessing the hyperthermic properties of magnetic heterostructures: the case of gold–iron oxide composites

2016 ◽  
Vol 6 (6) ◽  
pp. 20160058 ◽  
Author(s):  
Elvira Fantechi ◽  
Paula M. Castillo ◽  
Erika Conca ◽  
Francesca Cugia ◽  
Claudio Sangregorio ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Iron Oxide ◽  
Magnetic Fluid ◽  
Potassium Citrate ◽  
Alternating Magnetic Field ◽  
X Ray Diffraction ◽  
Experimental Conditions ◽  
Magnetic Fluid Hyperthermia ◽  
Transmission Electron ◽  
Oxide Composites

Gold–iron oxide composites were obtained by in situ reduction of an Au(III) precursor by an organic reductant (either potassium citrate or tiopronin) in a dispersion of preformed iron oxide ultrasmall magnetic (USM) nanoparticles. X-ray diffraction, transmission electron microscopy, chemical analysis and mid-infrared spectroscopy show the successful deposition of gold domains on the preformed magnetic nanoparticles, and the occurrence of either citrate or tiopronin as surface coating. The potential of the USM@Au nanoheterostructures as heat mediators for therapy through magnetic fluid hyperthermia was determined by calorimetric measurements under sample irradiation by an alternating magnetic field with intensity and frequency within the safe values for biomedical use. The USM@Au composites showed to be active heat mediators for magnetic fluid hyperthermia, leading to a rapid increase in temperature under exposure to an alternating magnetic field even under the very mild experimental conditions adopted, and their potential was assessed by determining their specific absorption rate (SAR) and compared with the pure iron oxide nanoparticles. Calorimetric investigation of the synthesized nanostructures enabled us to point out the effect of different experimental conditions on the SAR value, which is to date the parameter used for the assessment of the hyperthermic efficiency.

On the in Vitro Hyperthermia of Magnetic Fluid in AC Magnetic Field

2009 ◽  
Author(s):  
Junfeng Jiang ◽  
Ruoyu Hong ◽  
Xiaohui Zhang ◽  
Hongzhong Li
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Volume Fraction ◽  
Maximum Temperature ◽  
Magnetic Fluid Hyperthermia ◽  
Ac Magnetic Field ◽  
Hyperthermia Therapy ◽  
Good Biocompatibility ◽  
High Chemical Stability

Hyperthermia therapy for cancer has attracted much attention nowadays. The study on the heat transfer in the magnetic fluid and the tumor is crucial for the successful application of magnetic fluid hyperthermia (MFH). Water-based Fe3O4 magnetic fluid is expected to be a most appropriate candidate for MFH due to the good biocompatibility, high saturation magnetization, super-paramagnetization and high chemical stability. In this paper, we explore the heat generation and transfer in magnetic fluid which is placed under an AC magnetic field. It is found that the amplitude and the frequency of alternating magnetic field, particle size and volume fraction have a pronounce influence on maximum temperature of hyperthermia.

scholarly journals 138 Responses of Micro Magnetic Fluid Bridge Held by Two Small Magnets in Alternating Magnetic Field

2013 ◽  
Vol 2013.48 (0) ◽  
pp. 78-79
Author(s):  
Hiroki TAKAMATSU ◽  
Seiichi SUDO ◽  
Hidemasa TAKANA ◽  
Hideya NISHIYAMA
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Alternating Magnetic Field

Characteristics of a magnetic fluid under an orthogonal alternating magnetic field

2016 ◽  
Vol 409 ◽  
pp. 66-70 ◽  
Author(s):  
M. Zhao ◽  
J.H. Hu ◽  
J.B. Zou ◽  
B. Zhao ◽  
Y. Li
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Alternating Magnetic Field
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