Results 61 to 70 of about 69,968 (288)

Fe Core–Carbon Shell Nanoparticles as Advanced MRI Contrast Enhancer

Journal of Functional Biomaterials, 2017
The aim of this study is to fabricate a hybrid composite of iron (Fe) core–carbon (C) shell nanoparticles with enhanced magnetic properties for contrast enhancement in magnetic resonance imaging (MRI).
Rakesh P. Chaudhary, Kim Kangasniemi, Masaya Takahashi, Samarendra K. Mohanty, Ali R. Koymen   +4 more
doaj   +1 more source

Controlled Synthesis and Characterization of Micrometric Single Crystalline Magnetite With Superparamagnetic Behavior and Cytocompatibility/Cytotoxicity Assessments

Frontiers in Pharmacology, 2020
A new class of magnetite (Fe3O4) particles, coined as “Single Crystalline Micrometric Iron Oxide Particles” (SCMIOPs), were obtained by hydrothermal synthesis.
Claudia Geanina Farcas, Claudia Geanina Farcas, Ioana Macasoi, Iulia Pinzaru, Marius Chirita, Marius Constantin Chirita Mihaila, Marius Constantin Chirita Mihaila, Marius Constantin Chirita Mihaila, Cristina Dehelean, Stefana Avram, Felicia Loghin, Liviu Mocanu, Virgil Rotaru, Adrian Ieta, Aurel Ercuta, Dorina Coricovac   +15 more
doaj   +1 more source

Magnetic properties of polypyrrole - coated iron oxide nanoparticles

, 2004
Iron oxide nanoparticles were prepared by sol -gel process. Insitu polymerization of pyrrole monomer in the presence of oxygen in iron oxide ethanol suspension resulted in a iron oxide - polypyrrole nanocomposite.
Chauhan P, Dormann J H, Huang C L, International Centre for Diffraction Data, Raksha Sharma, S Annapoorni, Skomski R, Subhalakshmi Lamba, Weis J J   +8 more
core   +2 more sources

Microengineered Gradient Hydrogels for Mechanobiology

Advanced Healthcare Materials, EarlyView.
Gradient hydrogels are used to mimic the mechanical heterogeneity in native tissues, offering powerful in vitro platforms to study cell‐material interactions in diverse pathophysiological contexts. Here, we present a comprehensive review of the design and experimental considerations for stiffness gradient hydrogels, discussing exemplary achievements ...
Shin Wei Chong, Deepu Ashok, Anna Waterhouse, Marcela M. M. Bilek, Daniele Vigolo   +4 more
wiley   +1 more source

Fe₃O₄@SiO₂-NH₂ Functionalized Nanoparticles as a Potential Contrast Agent in Magnetic Resonance

Condensed Matter
The present work proposes a method for the synthesis of a nanoparticle with a superparamagnetic Fe3O4 core coated with SiO2-NH2 by ultrasound-assisted coprecipitation.
Brayan Stick Betin Bohorquez, Indry Milena Saavedra Gaona, Carlos Arturo Parra Vargas, Karina Vargas-Sánchez, Jahaziel Amaya, Mónica Losada-Barragán, Javier Rincón, Daniel Llamosa Pérez   +7 more
doaj   +1 more source

Dual Acidic pH‐Responsive Post‐Crosslinked E‐Spun Nanofibrous Scaffolds Exhibiting Enhanced Disassembly and Release for Localized Cancer Treatment

Advanced Healthcare Materials, EarlyView.
Dual acidic pH‐responsive degradable e‐spun nanofibrous mats crosslinked with acid‐labile imine and boronic ester linkages that exhibit rapid degradation and enhanced release of encapsulated anticancer drugs through their acid‐catalyzed hydrolysis and their doxorubicin‐loaded mats having desired antitumoral activity and hemocompatibility, as promising ...
Sofia Nieves Casillas‐Popova, Arianna Cirillo, Cameron D. Skinner, Dajana Vuckovic, Jung Kwon Oh   +4 more
wiley   +1 more source

Mössbauer Study of Weathering Products in Meteorites from the Atacama Desert

Magnetochemistry
During their stay at the surface of the Earth, meteorites undergo terrestrial weathering. In particular, the iron-nickel alloys and iron sulfides that are abundant in many types of meteorites transform into oxides and oxihydroxides (magnetite, maghemite,
Andrew Pyataev, Dilyara Kuzina, Jérôme Gattacceca, Carine Sadaka, Razilia Muftakhetdinova   +4 more
doaj   +1 more source

Nanosized superparamagnetic precipitates in cobalt-doped ZnO

, 2008
The existence of semiconductors exhibiting long-range ferromagnetic ordering at room temperature still is controversial. One particularly important issue is the presence of secondary magnetic phases such as clusters, segregations, etc...
B.D. Cullity, B.L. Henke, B.T. Thole, C.T. Chen, D. Schmeisser, F. Hofer, F.M.F. Groot De, H. Munekata, H. Ohno, I. Žutić, J. C. Cezar, J. Simon, J.L. Dormann, J.M.D. Coey, K. -W. Nielsen, K. Nielsen, K. Rode, K.R. Kittilstved, L. Néel, M. Opel, M. Venkatesan, P. Carra, R. Gross, R.C. O’Handley, S. Bauer, S. Gallego, S. Kolesnik, S. Kuroda, S. T. B. Goennenwein, S. Zhou, S.A. Chambers, S.A. Wolf, S.C. Wi, S.J. Naftel, T. Dietl, W. Mader, W.K. Liu, X.Z. Li   +37 more
core   +2 more sources

Nanoscale Analysis of Superparamagnetic Systems

Acta Physica Polonica A, 2017
The paper refers to a kind of nanoscale characterization of superparamagnetic materials above and below the so-called blocking temperature. It is propose to apply the Stoner–Wohlfarth model of nanoparticles magnetization supplemented by the two-level kinetic model, determining behavior in T > 0.
Chrobak, Artur, Ziółkowski, Grzegorz
openaire   +3 more sources

Unveiling Exsolution‐Induced Giant Electronic and Magnetic Property Changes in Non‐Stoichiometric Titanate Perovskite Thin Films

Advanced Materials, EarlyView.
A giant insulator to metal transition and emergent superparamagnetism are revealed by nanoparticle exsolution in non‐stoichiometric titanate perovskite thin films. By combining transport, synchrotron spectroscopy, and first‐principles calculations, this work reveals how defect reconfiguration and lattice reconstruction fundamentally reshape electronic ...
Sungil Kim, June Ho Lee, Yaolong Xing, Dongchang Kim, Haeseong Jeong, Mongjun Jeong, Manuel Valvidares, Stuart S. P. Parkin, Sang Ho Oh, Donghwa Lee, Hyojin Yoon, Hyeon Han   +11 more
wiley   +1 more source