Magnetic hyperthermia with hard-magnetic particles: Solid and liquid systems of paired Stoner-Wohlfarth particles

2019 ◽  
Vol 477 ◽  
pp. 307-316 ◽  
Author(s):  
Bronislav E. Kashevsky ◽  
Sergey B. Kashevsky ◽  
Anton M. Zholud
Keyword(s):  
Magnetic Particles ◽  
Magnetic Hyperthermia ◽  
Liquid Systems

scholarly journals Electroactive Composites with Block Copolymer-Templated Iron Oxide Nanoparticles for Magnetic Hyperthermia Application

Polymers ◽  
2019 ◽  
Vol 11 (9) ◽  
pp. 1430
Author(s):  
Shu-Chian Yang ◽  
Chun-Yu Chen ◽  
Hung-Yu Wan ◽  
Szu-Ying Huang ◽  
Ta-I Yang
Keyword(s):  
Iron Oxide ◽  
Block Copolymer ◽  
Magnetic Particles ◽  
Magnetic Hyperthermia ◽  
Promising Technique ◽  
Cathodic Current ◽  
Heating Performance ◽  
Relaxation Loss ◽  
And Control ◽  
Human Death

Cancer has been one of the leading causes of human death for centuries. Magnetic hyperthermia is a promising technique to confine and control cancers. However, particles used in magnetic hyperthermia leaking from where the cancers are located could compromise human health. Therefore, we developed electroactive iron oxide/block copolymer composites to tackle the leakage problem. Experimental results show that oleylamine-modified magnetic iron oxide (Fe3O4) particles and electroactive tetraaniline (TA) could be templated in the self-assembled microstructures of sulfonated [styrene-b-(ethylene-ran-butylene)-b-styrene] (S-SEBS) block copolymers. Various amounts of Fe3O4 particles and TA oligomer were incorporated in S-SEBS block copolymer and their electroactive behavior was confirmed by exhibiting two pairs of well-defined anodic and cathodic current peaks in cyclic voltammetry tests. The heating performance of the resultant TA/Fe3O4/polymer composites improved on increasing the added amount of Fe3O4 particles and TA oligomers. Both Fe3O4 and TA can contribute to improved heating performance, but Fe3O4 possesses a greater contribution than TA does. Hence, the main source for increasing the composites’ temperature is Neel relaxation loss from Fe3O4 magnetic particles.

scholarly journals Magnetic hyperthermia with Fe - Cr- Nb - B magnetic particles

2017 ◽  
Author(s):  
Iordana Astefanoaei ◽  
Alexandru Stancu ◽  
Horia Chiriac
Keyword(s):  
Magnetic Particles ◽  
Magnetic Hyperthermia

scholarly journals The Effect of Tissue-Mimicking Phantom Compressibility on Magnetic Hyperthermia

Nanomaterials ◽  
2019 ◽  
Vol 9 (5) ◽  
pp. 803 ◽  
Author(s):  
Katarzyna Kaczmarek ◽  
Radosław Mrówczyński ◽  
Tomasz Hornowski ◽  
Rafał Bielas ◽  
Arkadiusz Józefczak
Keyword(s):  
Magnetic Field ◽  
Electron Microscopy ◽  
Magnetic Materials ◽  
Absorption Rate ◽  
Magnetic Particles ◽  
Specific Absorption Rate ◽  
Magnetic Hyperthermia ◽  
Magnetic Losses ◽  
Small Temperature ◽  
Transmission Electron

During hyperthermia, magnetite nanoparticles placed in an AC magnetic field become a source of heat. It has been shown that in fluid suspensions, magnetic particles move freely and generate heat easily. However, in tissues of different mechanical properties, nanoparticle movement is limited and leads to a small temperature rise in tissue. Therefore, it is crucial to conduct magnetic hyperthermia experiments in similar conditions to the human body. The effect of tissue-mimicking phantom compressibility on the effectiveness of magnetic hyperthermia was investigated on agar phantoms. Single and cluster nanoparticles were synthesized and used as magnetic materials. The prepared magnetic materials were characterized by transmission electron microscopy (TEM), and zeta potential measurements. Results show that tissue-mimicking phantom compressibility decreases with the concentration of agar. Moreover, the lower the compressibility, the lower the thermal effect of magnetic hyperthermia. Specific absorption rate (SAR) values also proved our assumption that tissue-mimicking phantom compressibility affects magnetic losses in the alternating magnetic field (AMF).

scholarly journals Di- and tri-component spinel ferrite nanocubes: synthesis and their comparative characterization for theranostic applications

Nanoscale ◽  
2021 ◽  
Author(s):  
Niccolò Silvestri ◽  
Helena Gavilán ◽  
Pablo Guardia ◽  
Rosaria Brescia ◽  
Soraia Fernandes ◽  
...  
Keyword(s):  
Magnetic Resonance Imaging ◽  
Magnetic Properties ◽  
Magnetic Resonance ◽  
Magnetic Particles ◽  
Spinel Ferrite ◽  
Magnetic Hyperthermia ◽  
Resonance Imaging ◽  
Hyperthermia Treatment ◽  
Theranostic Applications ◽  
Mixed Transition

Mixed transition metals ferrites nanocubes are here prepared. Their magnetic properties are evaluated to assess their applicability as theranostic tools for magnetic hyperthermia treatment, magnetic resonance imaging and magnetic particles imaging.

scholarly journals Cubic Nanoparticles for Magnetic Hyperthermia: Process Optimization and Potential Industrial Implementation

Nanomaterials ◽  
2021 ◽  
Vol 11 (7) ◽  
pp. 1652
Author(s):  
Omar Sánchez Sánchez ◽  
Teresa Castelo-Grande ◽  
Paulo A. Augusto ◽  
José M. Compaña ◽  
Domingos Barbosa
Keyword(s):  
System Design ◽  
Process Optimization ◽  
Production System ◽  
Magnetic Particles ◽  
Magnetic Hyperthermia ◽  
Economic Viability ◽  
Implementation Study ◽  
Industrial Implementation ◽  
Production System Design ◽  
Shape And Size

Cubic nanoparticles are referred to as the best shaped particles for magnetic hyperthermia applications. In this work, the best set of values for obtaining optimized shape and size of magnetic particles (namely: reagents quantities and proportions, type of solvents, temperature, etc.) is determined. A full industrial implementation study is also performed, including production system design and technical and economic viability.

scholarly journals Magnetic Nanomaterials for Arterial Embolization and Hyperthermia of Parenchymal Organs Tumors: A Review

Nanomaterials ◽  
2021 ◽  
Vol 11 (12) ◽  
pp. 3402
Author(s):  
Natalia E. Kazantseva ◽  
Ilona S. Smolkova ◽  
Vladimir Babayan ◽  
Jarmila Vilčáková ◽  
Petr Smolka ◽  
...  
Keyword(s):  
Magnetic Particles ◽  
Thermal Destruction ◽  
Vascular System ◽  
Arterial Embolization ◽  
Double Effect ◽  
Magnetic Hyperthermia ◽  
Magnetic Nanomaterials ◽  
Invasive Treatment ◽  
Embolic Agents ◽  
Oncological Diseases

Magnetic hyperthermia (MH), proposed by R. K. Gilchrist in the middle of the last century as local hyperthermia, has nowadays become a recognized method for minimally invasive treatment of oncological diseases in combination with chemotherapy (ChT) and radiotherapy (RT). One type of MH is arterial embolization hyperthermia (AEH), intended for the presurgical treatment of primary inoperable and metastasized solid tumors of parenchymal organs. This method is based on hyperthermia after transcatheter arterial embolization of the tumor's vascular system with a mixture of magnetic particles and embolic agents. An important advantage of AEH lies in the double effect of embolotherapy, which blocks blood flow in the tumor, and MH, which eradicates cancer cells. Consequently, only the tumor undergoes thermal destruction. This review introduces the progress in the development of polymeric magnetic materials for application in AEH.

Thermosensitive Implant for Magnetic Hyperthermia by Mixing Micro-Magnetic and Nano-Magnetic Particles

2018 ◽  
Vol 54 (6) ◽  
pp. 1-4 ◽  
Author(s):  
Loi Tonthat ◽  
Yoshiyuki Yamamoto ◽  
Fumitaka Aki ◽  
Hajime Saito ◽  
Kazutaka Mitobe
Keyword(s):  
Magnetic Particles ◽  
Magnetic Hyperthermia
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