L. Vékás

Romanian Academy

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МВ

М. В. Авдеев

Joint Institute for Nuclear Research

D. Bica

Institute of Continuous Media Mechanics

Rodica Turcu

National Institute for Research and Development of Isotopic and Molecular Technologies

Oana Marinică

Polytechnic University of Timişoara

Doina Bica

Romanian Academy

Vlad Socoliuc

Romanian Academy

ВЛ

В. Л. Аксенов

Joint Institute for Nuclear Research

I. Crăciunescu

National Institute for Research and Development of Isotopic and Molecular Technologies

Daniela Susan-Resiga

West University of Timişoara

M. Bălășoiu

Horia Hulubei National Institute for R and D in Physics and Nuclear Engineering

Cooperative Institutions

Polytechnic University of Timişoara

Romanian Academy

University of Cyprus

Centre National de la Recherche Scientifique

National Institute for Research and Development of Isotopic and Molecular Technologies

National Institute for Laser Plasma and Radiation Physics

Joint Institute for Nuclear Research

Universitatea Națională de Știință și Tehnologie Politehnica București

Slovak Academy of Sciences

University of Bucharest

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About the existence of anI=5/2 isobar at 1,470 MeV

Zeitschrift für Physik A Hadrons and Nuclei (1969)

É. Hegedűs A. Abramovici L. Vékás

Isobar

10.1007/bf01392513

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Citations (0)

Strongly polar magnetic fluids with Fe/sub 3/O/sub 4/ and CoFe/sub 2/O/sub 4/ nanoparticles

D. Bica Oana Marinică Floriana D. Stoian Daniela Susan-Resiga L. Vékás

The paper presents experimental results concerning the chemical synthesis of Fe/sub 3/O/sub 4/ and CoFe/sub 2/O/sub 4/ magnetic nanoparticles, as well as the stabilization/dispersion mechanisms applied to obtain strongly polar magnetic fluids on water and pentanol carriers. The colloidal stability of samples was analyzed through investigations of the magnetic and magnetorheological behaviour of samples.

10.1109/smicnd.2002.1105820

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Multiresponsive Polymer Conetworks Capable of Responding to Changes in pH, Temperature, and Magnetic Field: Synthesis, Characterization, and Evaluation of Their Ability for Controlled Uptake and Release of Solutes

ACS Applied Materials & Interfaces (2012)

Petri Papaphilippou Maria Christodoulou Oana-Maria Marinica Elena-Alina Moacă L. Vékás

This study deals with the preparation of novel multiresponsive (magnetoresponsive, thermoresponsive and pH-responsive) nanocomposite conetworks consisting of oleic acid-coated magnetite nanoparticles (OA·Fe(3)O(4)), hydrophilic/thermoresponsive hexa(ethylene glycol) methyl ether methacrylate (HEGMA), hydrophobic/metal binding 2-(acetoacetoxy)ethyl methacrylate (AEMA), and pH-responsive/thermoresponsive N-diethylaminoethyl methacrylate (DEAEMA) and 2-(dimethylamino)ethyl methacrylate (DMAEMA) moieties. Conventional free radical copolymerization was employed for the synthesis of random conetworks in the absence and presence of preformed OA·Fe(3)O(4). Further, in characterization of these materials in regards to their swelling behavior in organic and aqueous solvents, thermal/thermoresponsive properties, and composition, assessment of their magnetic characteristics disclosed tunable superparamagnetic behavior. These systems were also evaluated toward their ability to adsorb and release a solute (benzoic acid) in a controlled manner upon varying the pH.

Characterization

10.1021/am300144w

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Citations (52)

Characterization of magnetic nano-fluids via Mössbauer spectroscopy

Hyperfine Interactions (2009)

G. Filoti V. Kuncser G. Schinteie P. Palade I. Morjan

Characterization

10.1007/s10751-009-9952-5

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Citations (6)

Superparamagnetic Composites Based on Ionic Resin Beads/CaCO₃/Magnetite

Chemistry - A European Journal (2016)

Ion Bunia Vlad Socoliuc L. Vékás Florica Doroftei Cristian-Dragoş Varganici

Abstract The preparation of superparamagnetic composites obtained by CaCO 3 mineralization from supersaturate aqueous solutions is presented. The preparation was conducted in the presence of oleic acid stabilized magnetite nanoparticles as a water‐based magnetic fluid and insoluble templates as gel‐like cross‐linked polymeric beads. The presence of the magnetic particles in the composites provides a facile way for external manipulation using a permanent magnet, thus allowing the separation and extraction of magnetically modified materials. Two ion exchangers based on divinylbenzene/ethyl acrylate/acrylonitrile cross‐linked copolymer—a cation ion exchanger (CIE) and an amphoteric ion exchanger (AIE)—were used, as well as different addition orders of magnetite and CaCO 3 crystals growth precursors. The morphology of the composites was investigated by SEM, the polymorphs content by X‐ray diffraction, and the thermal stability by thermogravimetric analysis. Polymer, CaCO 3 , and magnetite in the composite particles were shown to be present by energy dispersive X‐ray (EDX), XPS, and TEM. The sorption capacity for Cu II ions was tested, as compared to samples prepared without magnetite.

Superparamagnetism

Magnetite Nanoparticles

10.1002/chem.201603779

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Citations (5)

The light-induced structuralization in magnetic fluids with negative Soret constant

Journal of Magnetism and Magnetic Materials (2005)

P. Kopčanský M. Hnatich M. Repašan I. Potočová M. Timko

Constant (computer programming)

Thermophoresis

10.1016/j.jmmm.2004.11.083

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Citations (1)

Iron/iron oxides core–shell nanoparticles by laser pyrolysis: Structural characterization and enhanced particle dispersion

Applied Surface Science (2007)

E. Popovici Florian Dumitrache I. Morjan R. Alexandrescu V. Ciupină

Iron oxide nanoparticles

Particle (ecology)

10.1016/j.apsusc.2007.09.022

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Citations (33)

Micro- and nano-composites with tailoredmagnetic behaviour

Federico Carosio Alberto Fina G. Camino Marco Coïsson P. Turcu

Source

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Citations (0)

Characterization of magnetic nano-fluids via Mössbauer spectroscopy

Springer eBooks (2009)

G. Filoti V. Kuncser G. Schinteie P. Palade I. Morjan

Characterization

10.1007/978-3-642-01370-6_50

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Clustering in Water Based Magnetic Nanofluids: Investigations by Light Scattering Methods

AIP conference proceedings (2010)

Vlad Socoliuc Elena-Alina Moacă Camelia Podaru Andreea Dobra Camelia Daia

Nanosized magnetite particles, with mean physical diameter of about 7 nm, obtained by chemical coprecipitation procedure were dispersed in water carrier by applying sterical stabilization of particles in order to prevent their aggregation and to ensure colloidal stability of the systems. Different chain length (C12, C14, C18) carboxylic acids (lauric (LA), myristic (MA) and oleic (OA)) were used for double layer coating of magnetite nanoparticles. Structural and magnetic properties were investigated by electron microscopy (TEM), dynamical and static light scattering (DLS, SLS) and magnetometry (VSM) to evaluate the role of chain length and of the saturated/unsaturated nature of surfactant layers. Also investigated were two water based magnetic nanocomposites obtained by encapsulating the magnetic nanoparticles in polymers with different functional properties.

Coprecipitation

10.1063/1.3530065

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Citations (5)