Results 21 to 30 of about 35,935 (220)

Engineering Gold Shelled Nanomagnets for Pre-Setting the Operating Temperature for Magnetic Hyperthermia

Nanomaterials, 2022
This study investigated the fabrication of spherical gold shelled maghemite nanoparticles for use in magnetic hyperthermia (MHT) assays. A maghemite core (14 ± 3 nm) was used to fabricate two samples with different gold thicknesses, which presented gold (
Elis Regina Lima Siqueira, Willie Oliveira Pinheiro, Victor Raul Romero Aquino, Breno Cunha Pinto Coelho, Andris Figueiroa Bakuzis, Ricardo Bentes Azevedo, Marcelo Henrique Sousa, Paulo Cesar Morais   +7 more
doaj   +1 more source

Maghemite Functionalization for Antitumor Drug Vehiculization [PDF]

Molecular Pharmaceutics, 2012
In this paper we describe the preparation and characterization of magnetic nanocomposites designed for applications in targeted drug delivery. Combining superparamagnetic behavior with proper surface functionalization in a single entity makes it possible to have altogether controlled location and drug loading, and release capabilities.
Katarzyna, Rudzka, Angel V, Delgado, Julián L, Viota   +2 more
openaire   +2 more sources

Local Structure and Magnetism of Fe₂O₃ Maghemite Nanocrystals: The Role of Crystal Dimension

Nanomaterials, 2020
Here we report on the impact of reducing the crystalline size on the structural and magnetic properties of γ-Fe2O3 maghemite nanoparticles. A set of polycrystalline specimens with crystallite size ranging from ~2 to ~50 nm was obtained combining ...
Mauro Coduri, Paolo Masala, Lucia Del Bianco, Federico Spizzo, Davide Ceresoli, Carlo Castellano, Serena Cappelli, Cesare Oliva, Stefano Checchia, Mattia Allieta, Dorothee-Vinga Szabo, Sabine Schlabach, Michael Hagelstein, Claudio Ferrero, Marco Scavini   +14 more
doaj   +1 more source

Observation of superspin glass state in magnetically textured ferrofluid (gamma-Fe2O3) [PDF]

, 2008
Magnetic properties in a magnetically textured ferrofluid made out of interacting maghemite (gamma-Fe2O3) nanoparticles suspended in glycerin have been investigated.
Berkowski B., C. Thibierge, D. L’Hôte, E. Dubois, E. Vincent, R. Perzynski, S. Nakamae, V. Dupuis, Y. Tahri   +8 more
core   +4 more sources

Reassessing the role of magnetite during natural hydrogen generation

Frontiers in Earth Science, 2023
Interactions between water and ferrous rocks are known to generate natural H2 in oceanic and continental domains via the oxidation of iron. Such generation has been mainly investigated through the alteration of Fe2+-silicate and some Fe2+-carbonates.
Ugo Geymond, Ugo Geymond, Théo Briolet, Théo Briolet, Valentine Combaudon, Valentine Combaudon, Olivier Sissmann, Isabelle Martinez, Mathieu Duttine, Isabelle Moretti   +9 more
doaj   +1 more source

Finite-Size and surface effects in maghemite nanoparticles: Monte Carlo simulations [PDF]

, 2001
Finite-size and surface effects in fine particle systems are investigated by Monte Carlo simulation of a model of a $\gamma$-Fe$_2$O$_3$ (maghemite) single particle.
A. Corciovei, A. H. Morrish, A. Ochi, Amílcar Labarta, B. Martínez, B. Martínez, C. M. Soukoulis, C. M. Soukoulis, D. A. Dimitrov, D. A. Dimitrov, D. H. Han, D. Lin, D. P. Landau, D. Zhao, E. C. Stoner, E. C. Stoner, E. Viitala, F. Gazeau, F. Gazeau, F. T. Parker, G. Xiao, H. E. Stanley, H. Kachkachi, H. Kachkachi, H. Maletta, J. L. Dormann, J. M. D. Coey, J. Z. Jiang, J.-H. Park, K. Binder, K. Haneda, K. N. Trohidou, M. García del Muro, M. N. Barber, M. P. Morales, P. Gaunt, P. Gaunt, P. Jonsson, P. Milténi, Q. A. Pankhurst, R. H. Kodama, R. H. Kodama, R. H. Kodama, R. L. Stamps, S. Linderoth, S. Mørup, T. Jonsson, T. Jonsson, T. Okada, X. Batlle, X. Zianni, Z. X. Tang, Òscar Iglesias   +52 more
core   +3 more sources

Magneto-sensitive hybrid nanocomposites of water-soluble sodium alginate cross-linked with calcium ions and maghemite

eXPRESS Polymer Letters, 2018
A synthetic procedure is described for preparation of magneto-sensitive nanocomposites from maghemite nanoparticles and a natural polysaccharide, sodium alginate cross-linked with calcium ions.
V. V. Spiridonov, I. G. Panova, L. A. Makarova, S. B. Zezin, A. A. Novakova, T. G. Baluyan, A. V. Sybachin, V. V. Kuznetsov, A. A. Yaroslavov   +8 more
doaj   +1 more source

Surface effects in maghemite nanoparticles

Journal of Magnetism and Magnetic Materials, 2007
A consistent model is presented for the variation of saturation magnetization with particle size in maghemite nanoparticles, based on the existence of a magnetically disordered layer with a constant thickness of 1 nm. For particles smaller than 3 nm, layer thickness increases rapidly, and MS is already zero for 2.5 nm particle size.
Millan, A., Urtizberea, A., Silva, N. J. O., Palacio, F., Amaral, V. S., Snoeck, E., Serin, V.   +6 more
openaire   +2 more sources

Synthesis and cytotoxicity analysis of fatty acid-mediated maghemite nanoparticles in cancerous and normal cells [PDF]

Nanomedicine Journal
Objective(s): Our goal was to synthesize and characterize fatty acid-capped maghemite nanoparticles (NPs) and evaluate their cytotoxic effect on human cancer and normal cell lines.Methods: Maghemite NPs were synthesized by co-precipitating iron (II ...
Mina Zangouei, Elham Einafshar, Fatemeh Forouzanfar, Tayebeh Hamzehloei, Zahra Meshkat, Aida Gholoobi   +5 more
doaj   +1 more source

Assessment of the Capability of Magnetic Nanoparticles to Recover Neodymium Ions from Aqueous Solution

Acta Chimica Slovenica, 2022
Magnetic nanoparticles (MNPs) have received increasing attention for various applications due to their fast synthesis, versatile functionalization, and recyclability by the application of a magnetic field.
Ana Ambrož, Irena Ban, Thomas Luxbacher
doaj   +1 more source