Frequency dependence of magnetothermal properties for magnetic fluid and magnetically functionalized implants

Abstract

Heating of the magnetic nanoparticles in AC magnetic field is the effect promising for application in medicine. The mechanisms of heating in AC-magnetic field implies nontrivial dependence of the power dissipated by magnetic nanoparticles on frequency. With the use of a reconfigurable experimental setup, this frequency-dependent magnetic heating was measured on two characteristic examples: the magnetite nanoparticles conventionally used in medicine and polymer coating with micrometer sized magnetite particles. The saturation of the heating power with frequency is shown that is more pronounced for the second case of microparticles.

CaCO3 Nanoparticles Coated with Alternating Layers of Poly-L-Arginine Hydrochloride and Fe3O4 Nanoparticles as Navigable Drug Carriers and Hyperthermia Agents

“…The theoretical estimation of the SAR parameter has shown that this value increases with the incorporation of nanoparticles into the polymer shell (sample 0c1s). The capsules 0c1s are capable of heating by 10–15 °C based on the experimental results, which are presented in previous studies. − A slow heating rate to a temperature of 42 °C using an external alternating magnetic field is relevant for hyperthermia. The release of a drug from capsules with MNPs embedded in the shell can be achieved by hyperthermia.…”