Results 31 to 40 of about 35,382 (205)

Two-step single-reactor synthesis of oleic acid- or undecylenic acid-stabilized magnetic nanoparticles by thermal decomposition

Beilstein Journal of Nanotechnology, 2023
Different iron oxides (i.e., magnetite, maghemite, goethite, wüstite), particularly nanosized particles, show distinct effects on living organisms.
Mykhailo Nahorniak, Pamela Pasetto, Jean-Marc Greneche, Volodymyr Samaryk, Sandy Auguste, Anthony Rousseau, Nataliya Nosova, Serhii Varvarenko   +7 more
doaj   +1 more source

MPI Phantom Study with A High-Performing Multicore Tracer Made by Coprecipitation [PDF]

, 2019
Magnetic particle imaging (MPI) is a new imaging technique that detects the spatial distribution of magnetic nanoparticles (MNP) with the option of high temporal resolution.
Eberbeck, Dietmar, Hamm, Bernd, Hauptmann, Ralf, Kosch, Olaf, Kratz, Harald, Mohtashamdolatshahi, Azadeh, Schnorr, Jörg, Taupitz, Matthias, Wiekhorst, Frank   +8 more
core   +1 more source

Biologic Impact of Green Synthetized Magnetic Iron Oxide Nanoparticles on Two Different Lung Tumorigenic Monolayers and a 3D Normal Bronchial Model—EpiAirway^TM Microtissue

Pharmaceutics, 2022
The present study reports the successful synthesis of biocompatible magnetic iron oxide nanoparticles (MNPs) by an ecofriendly single step method, using two ethanolic extracts based on leaves of Camellia sinensis L. and Ocimum basilicum L.
Elena-Alina Moacă, Claudia Watz, Alexandra-Corina Faur, Daniela Lazăr, Vlad Socoliuc, Cornelia Păcurariu, Robert Ianoș, Cristiana-Iulia Rus, Daliana Minda, Lucian Barbu-Tudoran, Cristina Adriana Dehelean   +10 more
doaj   +1 more source

Finite-size versus Surface effects in nanoparticles

, 1999
We study the finite-size and surface effects on the thermal and spatial behaviors of the magnetisation of a small magnetic particle. We consider two systems: 1) A box-shaped isotropic particle of simple cubic structure with either periodic or free ...
Aharoni, Akhiezer, D.A. Garanin, Dimitrov, Dimitrov, E. Tronc, Eriksson, Garanin, Garanin, Garanin, H. Kachkachi, Kachkachi, Kodama, M. Noguès, Wildpaner   +14 more
core   +1 more source

Synthetic and natural iron oxide characterization through microparticle voltammetry [PDF]

, 2009
Se presentan los resultados de un estudio sobre el uso de la Voltametría de Micropartículas (VMP), aplicada a la identificación de óxidos y oxihidróxidos de hierro. Mediante esta técnica, fue posible diferenciar hematita, goethita, magnetita y maghemita,
Bidegain, Juan Carlos, Elsner, Cecilia Ines, Rico, Yamile   +2 more
core   +3 more sources

TiO₂–Fe₃O₄ Composite Systems—Preparation, Physicochemical Characterization, and an Attempt to Explain the Limitations That Arise in Catalytic Applications

Applied Sciences, 2022
In this work, a composite material based on titanium(IV) oxide and iron(II,III) oxide was prepared using mechanothermal method. The obtained composite system was thoroughly characterized using techniques such as scanning electron microscopy, X-ray powder
Rafal Krakowiak, Robert Frankowski, Kinga Mylkie, Dariusz T. Mlynarczyk, Marta Ziegler-Borowska, Agnieszka Zgoła-Grześkowiak, Tomasz Goslinski   +6 more
doaj   +1 more source

Colloidal Assemblies of Oriented Maghemite Nanocrystals and their NMR Relaxometric Properties

, 2014
Elevated-temperature polyol-based colloidal-chemistry approach allows for the development of size-tunable (50 and 86 nm) assemblies of maghemite iso-oriented nanocrystals, with enhanced magnetization.
Bordonali, L., Brintakis, K., Kostopoulou, A., Lappas, A., Lascialfari, A., Orsini, F., Psycharakis, S., Ranella, A., Thangavel, K., Velu, S. K. P.   +9 more
core   +1 more source

Modeling the iron oxides and oxyhydroxides for the prediction of environmentally sensitive phase transformations

, 2011
Iron oxides and oxyhydroxides are challenging to model computationally as competing phases may differ in formation energies by only several kJ/mol, they undergo magnetization transitions with temperature, their structures may contain partially occupied ...
A. F. Gualtieri, Amanda S. Barnard, C. Kittel, D. C. Golden, Haibo Guo, J. F. Nye, J. Majzlan, K. M. Rosso, R. M. Cornell, T. M. Henderson, T. Nagai   +10 more
core   +1 more source

Magnetic Domains and Surface Effects in Hollow Maghemite Nanoparticles [PDF]

, 2008
In the present work, we investigate the magnetic properties of ferrimagnetic and noninteracting maghemite (g-Fe2O3) hollow nanoparticles obtained by the Kirkendall effect.
Alivisatos, A. Paul, Balcells, Lluis, Cabot, Andreu, Iglesias, Oscar, Labarta, Amilcar, Puntes, Victor F.   +5 more
core   +2 more sources

Kinetics of Thermal Transformation of Synthetic Al-Maghemites into Al-Hematites

Revista Brasileira de Ciência do Solo
Maghemite (γ-Fe2O3) and hematite (α-Fe2O3) are important iron oxides in Brazilian soils derived from basalt. Maghemite can transform into hematite when exposed to high temperatures. However, isomorphic substitution (e.g., Al3+) may largely influence this
Adriele Galeti Nonaka, Marcelo Augusto Batista, Antonio Carlos Saraiva da Costa, Tadeu Takeyoshi Inoue, Taiana Gabriela Moretti Bonadio, Ivan Granemann de Souza Junior   +5 more
doaj   +1 more source