Special Issue "Functionalized Magnetic Nanomaterials"
Deadline for manuscript submissions: 15 September 2022.
Interests: nanostructured composites; functionalized magnetic nanoparticles; magnetic micro/nanogels; self-assembled nanoparticles systems; smart composites based on magnetic nanoparticles and stimuli responsive polymers; surface physics and chemistry of nanoparticles; nanomaterials characterization by X-ray Photoelectron Spectroscopy
Interests: magnetic nanoparticles; magnetic fluids; ferrofluids; bioferrofluids; magnetic nanocomposites; magnetorheological fluids; magnetic properties; flow properties; structure analysis by scattering techniques; engineering and biomedical applications of magnetizable nanomaterials
Magnetic nanomaterials engineered with a large variety of functional coatings have gained much interest because of their possible applications with dual-mode manipulation controlled by a magnetic field and through the appropriate design of surface properties.
Among the magnetic nanomaterials, magnetic iron oxide nanoparticles and their nanocomposites are very promising for innovative applications in nanomedicine and biotechnology, such as nanotherapeutics, multimodal imaging, targeted drug delivery, hyperthermia, analyte monitoring, and enzyme, protein, and nucleic acid separations, due to their large surface area, excellent magnetic properties, and low toxicity. The nature of magnetic nanoparticles’ surface coating is essential for their behavior in biorelevant media. Well separated or in clusters, with proper surface functionalization, usually dispersed in liquid carriers (bioferrofluids) or embedded/encapsulated in polymeric networks, magnetic nanoparticles are the basic building blocks of a large variety of multifunctional vehicles.
The surface modification of magnetic nanomaterials, including the attachment of functional groups necessary for applications based on interactions ranging from nonspecific (e.g., ionic, hydrophobic/hydrophilic, and hydrogen bond) through group-specific to specific-affinity interactions, is an important issue for the future progress of medical and industrial applications.
The design and preparation of functionalized magnetic nanomaterials could have a strong applicative impact in many fields, such as diagnosis and treatment, regenerative medicine, tissue engineering, magnetic bioseparation, protein immobilization, biocatalysis, biosensors, or water purification, to mention only a few.
In this context, the aim of this Special Issue is to publish original research papers and comprehensive reviews dealing with the most important issues concerning the synthesis, advance properties investigations, and potential applications of functionalized magnetic nanomaterials.
Dr. Rodica Paula Turcu
Prof. Dr. Ladislau Vekas
Manuscript Submission Information
Manuscripts should be submitted online at www.mdpi.com by registering and logging in to this website. Once you are registered, click here to go to the submission form. Manuscripts can be submitted until the deadline. All papers will be peer-reviewed. Accepted papers will be published continuously in the journal (as soon as accepted) and will be listed together on the special issue website. Research articles, review articles as well as short communications are invited. For planned papers, a title and short abstract (about 100 words) can be sent to the Editorial Office for announcement on this website.
Submitted manuscripts should not have been published previously, nor be under consideration for publication elsewhere (except conference proceedings papers). All manuscripts are thoroughly refereed through a single-blind peer-review process. A guide for authors and other relevant information for submission of manuscripts is available on the Instructions for Authors page. Nanomaterials is an international peer-reviewed open access semimonthly journal published by MDPI.
Please visit the Instructions for Authors page before submitting a manuscript. The Article Processing Charge (APC) for publication in this open access journal is 2400 CHF (Swiss Francs). Submitted papers should be well formatted and use good English. Authors may use MDPI's English editing service prior to publication or during author revisions.
- magnetic nanomaterials
- surface functionalization
- functionalized magnetic nanoparticles
- physical–chemical characterization
The below list represents only planned manuscripts. Some of these manuscripts have not been received by the Editorial Office yet. Papers submitted to MDPI journals are subject to peer-review.
Title: Optimal excitation parameters under human safety limits for maximizing nanoparticles heating capabilities
Authors: Fernando Plazaola
Affiliation: Department of Electricity & Electronics Faculty of Science & Technology University of the Basque Country UPV/EHU Sarriena s/n 48940 Leioa Bilbao, Basque Country (Spain)
Abstract: The Specific Absorption Rate (SAR), which measures the absorbed energy per unit of magnetic nanoparticle (MNP) mass, is a crucial parameter to design optimal MNPs for magnetic hyperthermia treatment. In order to achieve an efficient magnetic hyperthermia therapy, MNPs should display the best heating properties and generate as much heat as possible at the lowest particle content. During the magnetic hyperthermia treatment, eddy currents generated by the applied magnetic field, produce a non-specific heating in the body that can affect negatively the heathy tissue of human patients. The strength of the eddy currents depends on the product of the magnetic field intensity and frequency, H× f. The maximum acceptable H×f product, called the safety limit, restricts the external magnetic field excitation that can be employed in magnetic hyperthermia. For this reason, the optimal magnetic field excitation parameters to maximize the SAR within human tolerable limit need to be calculated. To determine the optimal magnetic field intensity and frequency, a high field AC magnetometer or calorimeter that works in a wide frequency range is necessary. So far, the experimental limitation of the current devices restrains the study of the optimal excitation parameters and consequently this issue is overlooked. In this work, the optimal magnetic field intensity and frequency for maximizing the SAR within the safety limit have been calculated for MNPs samples of different size, shape and composition. It is vital to choose the optimal samples for each magnetic hyperthermia treatment in which the excitation frequency or the intensity field are limited. Measurements have been carried out in a wide frequency range (100 kHz-1 MHz) and for fields up to 90 mT at low frequency side and up to 35 mT at high frequency side.