Heating Efficiency of Triple Vortex State Cylindrical Magnetic Nanoparticles.

ABSTRACT: A well-established method for treating cancerous tumors is magnetic hyperthermia, which uses localized heat generated by the relaxation mechanism of magnetic nanoparticles (MNPs) in a high-frequency alternating magnetic field. In this work, we investigate the heating efficiency of cylindrical NiFe MNPs, fabricated by template-assisted pulsed electrodeposition combined with differential chemical etching. The cylindrical geometry of the MNP enables the formation of the triple vortex state, which increases the heat generation efficiency by four times. Using time-dependent calorimetric measurements, the specific absorption rate (SAR) of the MNPs was determined and compared with the numerical calculations from micromagnetic simulations and vibrating sample magnetometer measurements. The magneti

SUBMITTER: Wong W 

PROVIDER: S-EPMC6915247 | biostudies-literature | 2019 Dec

REPOSITORIES: biostudies-literature