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Prolonged heating of Fe3O4-Au hybrid nanoparticles in a radiofrequency solenoid coil

Title
Prolonged heating of Fe3O4-Au hybrid nanoparticles in a radiofrequency solenoid coil
Authors
Park, Seong IllChung, Seok HwanKim, Hyun ChulLee, Se GeunLee, Seong JunKim, Hyun MinKim, Ho YoungJeong, Sang Won
DGIST Authors
Chung, Seok HwanKim, Hyun ChulLee, Se GeunLee, Seong JunKim, Hyun MinKim, Ho YoungJeong, Sang Won
Issue Date
2018-02
Citation
Colloids and Surfaces A: Physicochemical and Engineering Aspects, 538, 304-309
Type
Article
Article Type
Article
Keywords
IRON-OXIDE NANOPARTICLESGOLD NANOPARTICLESPHOTOTHERMAL THERAPYSHELL NANOPARTICLESMAGNETIC-FIELDHYPERTHERMIANANOCOMPOSITEDISPERSIONSPARTICLESGROWTH
ISSN
0927-7757
Abstract
We report the hyperthermia properties of Fe3O4–Au hybrid nanoparticles (HNPs) under a biocompatible alternating magnetic field (AMF) of 1.5 kA m−1 and 200 kHz. The HNPs were prepared by growing Au nanoparticles (AuNPs) with an average diameter of 3 nm on the surface of Fe3O4 magnetic nanoparticles (MNPs) with an average diameter of 10 nm. The structural properties were determined by transmission electron microscopy (TEM), dynamic light scattering (DLS), and X-ray diffraction (XRD). Under the AMF, the initial heating rate of the HNPs solution was lower than that of the MNPs solution because HNPs have a reduced saturation magnetization (Ms) value compared to MNPs. The continued AMF application increased the temperature of the HNPs solution steadily while the MNPs solution reached a thermal equilibrium. The heating effect of AuNPs conjugated to diamagnetic and non-conductive SiO2 nanoparticles (SiO2-AuNPs) was demonstrated under the same AMF condition, which suggests that the prolonged heating of HNPs can be attributed to the additional heating of AuNPs in the radiofrequency (RF) solenoid coil. © 2017 Elsevier B.V.
URI
http://hdl.handle.net/20.500.11750/5594
DOI
10.1016/j.colsurfa.2017.11.004
Publisher
ELSEVIER SCIENCE BV
Related Researcher
Files:
There are no files associated with this item.
Collection:
Magnet-Controlled Materials Research Group1. Journal Articles
Companion Diagnostics and Medical Technology Research Group1. Journal Articles


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