Heating magnetic fluid with alternating magnetic field
TL;DR: In this paper, the authors developed analytical relationships and computations of power dissipation in magnetic fluid (ferrofluid) subjected to alternating magnetic field and showed that the dissipation results from the orientational relaxation of particles having thermal fluctuations in a viscous medium.
About: This article is published in Journal of Magnetism and Magnetic Materials.The article was published on 2002-11-01. It has received 2111 citations till now. The article focuses on the topics: Magnetic pressure & Ferrofluid.
Citations
More filters
TL;DR: Practical Interests of Magnetic NuclearRelaxation for the Characterization of Superparamagnetic Colloid, and Use of Nanoparticles as Contrast Agents forMRI20825.
Abstract: 1. Introduction 20642. Synthesis of Magnetic Nanoparticles 20662.1. Classical Synthesis by Coprecipitation 20662.2. Reactions in Constrained Environments 20682.3. Hydrothermal and High-TemperatureReactions20692.4. Sol-Gel Reactions 20702.5. Polyol Methods 20712.6. Flow Injection Syntheses 20712.7. Electrochemical Methods 20712.8. Aerosol/Vapor Methods 20712.9. Sonolysis 20723. Stabilization of Magnetic Particles 20723.1. Monomeric Stabilizers 20723.1.1. Carboxylates 20733.1.2. Phosphates 20733.2. Inorganic Materials 20733.2.1. Silica 20733.2.2. Gold 20743.3. Polymer Stabilizers 20743.3.1. Dextran 20743.3.2. Polyethylene Glycol (PEG) 20753.3.3. Polyvinyl Alcohol (PVA) 20753.3.4. Alginate 20753.3.5. Chitosan 20753.3.6. Other Polymers 20753.4. Other Strategies for Stabilization 20764. Methods of Vectorization of the Particles 20765. Structural and Physicochemical Characterization 20785.1. Size, Polydispersity, Shape, and SurfaceCharacterization20795.2. Structure of Ferro- or FerrimagneticNanoparticles20805.2.1. Ferro- and Ferrimagnetic Nanoparticles 20805.3. Use of Nanoparticles as Contrast Agents forMRI20825.3.1. High Anisotropy Model 20845.3.2. Small Crystal and Low Anisotropy EnergyLimit20855.3.3. Practical Interests of Magnetic NuclearRelaxation for the Characterization ofSuperparamagnetic Colloid20855.3.4. Relaxation of Agglomerated Systems 20856. Applications 20866.1. MRI: Cellular Labeling, Molecular Imaging(Inflammation, Apoptose, etc.)20866.2.
5,915 citations
5,284 citations
Cites background from "Heating magnetic fluid with alterna..."
...The out-of-phase χ ′′ component results in heat generation given by [113]:...
[...]
...The physical basis of the heating of SPM particles by AC magnetic fields has been reviewed by Rosensweig [113]....
[...]
TL;DR: The physical principles underlying some current biomedical applications of magnetic nanoparticles are reviewed and the relevant physics of magnetic materials and their responses to applied magnetic fields are surveyed.
Abstract: The physical principles underlying some current biomedical applications of magnetic nanoparticles are reviewed. Starting from well-known basic concepts, and drawing on examples from biology and biomedicine, the relevant physics of magnetic materials and their responses to applied magnetic fields are surveyed. The way these properties are controlled and used is illustrated with reference to (i) magnetic separation of labelled cells and other biological entities; (ii) therapeutic drug, gene and radionuclide delivery; (iii) radio frequency methods for the catabolism of tumours via hyperthermia; and (iv) contrast enhancement agents for magnetic resonance imaging applications. Future prospects are also discussed.
2,815 citations
TL;DR: In this article, a review of state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications is presented, with a special emphasis on showing the benefits of using nanoparticles.
Abstract: This review is focused on describing state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications. In addition to this topic, we have also described in some detail some of the possible applications of magnetic nanoparticles in the field of biomedicine with special emphasis on showing the benefits of using nanoparticles. Finally, we have addressed some relevant findings on the importance of having well-defined synthetic routes to produce materials not only with similar physical features but also with similar crystallochemical characteristics.
1,753 citations
Journal Article•
TL;DR: In this paper, a review of state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications is presented, with a special emphasis on showing the benefits of using nanoparticles.
Abstract: This review is focused on describing state-of-the-art synthetic routes for the preparation of magnetic nanoparticles useful for biomedical applications. In addition to this topic, we have also described in some detail some of the possible applications of magnetic nanoparticles in the field of biomedicine with special emphasis on showing the benefits of using nanoparticles. Finally, we have addressed some relevant findings on the importance of having well-defined synthetic routes to produce materials not only with similar physical features but also with similar crystallochemical characteristics.
1,623 citations
References
More filters
[...]
22 Apr 1998
1,322 citations
"Heating magnetic fluid with alterna..." refers background in this paper
...1 which shows that the real and imaginary components have values that cross at the peak value of w00: The data of Fanin [7] display this trend....
[...]
TL;DR: The solution of the general equations should be established as rigorously as the present knowledge of the fundamental law permits ; the solution of these equations may, however, be obtained by approximations suited to the case.
Abstract: THE problem of formulating a rigorous mathematical description of the molecular motion in .liquids has always been regarded as much more difficult than that of the kinetic theory of gases or of solids, because one has the simplifying features of low density in the case of gases, and of a regular lattice structure in the case of solids, while the molecules of a liquid are in a dense and disordered state. It is clear that only approximate solutions may be expected ; but, in introducing the approximations, we think that the following principle should be accepted. The general equations should be established as rigorously as the present knowledge of the fundamental law permits ; the solution of these equations may, however, be obtained by approximations suited to the case.
643 citations
01 Jan 1996
TL;DR: The concepts and basic principles of magnetic fluids have been explained in a simple manner, but the significance fully described; and sufficient examples are presented in regard to the use of the theory in practical situations.
Abstract: The objective of this handbook is to provide a working guide to magnetic fluids. In the handbook, the concepts and basic principles have been explained in a simple manner, but the significance fully described; and sufficient examples are presented in regard to the use of the theory in practical situations. The liquid and magnetic phenomena, the core of magnetic fluid technology, are described in an easy-to-understand format. The fundamental characteristics of magnetic fluids along with measurement techniques are discussed. The design and operational principles of magnetic fluid devices are explained in detail with a view towards assisting the user with an in-depth understanding of the technology.
The handbook is user-friendly. Magnetic fluids and related topics are presented in such a manner that the engineer quickly learns about this field and becomes efficient in the use of the technology. Students and academics should also find the book to be valuable because of its basic nature and broad subject matter.
831 pages,
© 1996
383 citations
Additional excerpts
...Keywords: Magnetic fluid; Ferrofluid; Heating; Medical hyperthermia...
[...]
01 Jun 1999
381 citations