Výsledky vyhledávání - "Gustavo B. Alcantara"

Morphology of cobalt ferrite nanoparticle–polyelectrolyte multilayered nanocomposites

Autor: Maria A. G. Soler, Leonardo G. Paterno, Fernando Josepetti Fonseca, Paulo C. Morais, Gustavo B. Alcantara

Publikováno v: Journal of Magnetism and Magnetic Materials. 323:1372-1377

Novel magnetic nanocomposite films with controlled morphology were produced via the electrostatic layer-by-layer assembly of cationic CoFe2O4 nanoparticles and anionic poly(3,4-ethylenedioxy thiophene)/poly(styrene sulfonic acid) (PEDOT:PSS) complex.

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::22e61fe732b058c389dfae9f79ea1a94
https://doi.org/10.1016/j.jmmm.2010.11.049

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Investigation of the Molecular Surface Coating on the Stability of Insulating Magnetic Oils

Autor: Maria A. G. Soler, Bartlomiej Andrzejewski, Gustavo B. Alcantara, Paulo C. Morais, Ewa Mosiniewicz-Szablewska, P.P.C. Sartoratto, Wesley Renato Viali

Publikováno v: The Journal of Physical Chemistry C. 114:179-188

Surface functionalization of a series of nanosized iron oxide particles (average diameter around 6 nm) with oleic acid was realized in this study. The aim is to suspend the surface-functionalized nanoparticulated materials in insulating mineral oil a

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::ac0fc806f1ed041cc709d2d9db0b07d3
https://doi.org/10.1021/jp908732b

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Fabrication and characterization of nanostructured conducting polymer films containing magnetic nanoparticles

Autor: Leonardo G. Paterno, Miguel A. Novak, J.P. Sinnecker, Fabio L. Leite, Paulo C. Morais, Gustavo B. Alcantara, Maria A. G. Soler, Fernando Josepetti Fonseca, Emília Celma de Oliveira Lima, Luiz H. C. Mattoso

Publikováno v: Thin Solid Films. 517:1753-1758

In this study, the layer-by-layer technique is used to deposit nanostructured films exhibiting electrical conductivity and magnetic behavior, from poly( o -ethoxyaniline) (POEA), sulfonated polystyrene (PSS) and positively-charged maghemite nanoparti

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::23d9701a6743aebd3c32c8ba453ad43f
https://doi.org/10.1016/j.tsf.2008.09.062

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Study of molecular surface coating on the stability of maghemite nanoparticles

Autor: Vijayendra K. Garg, Aderbal C. Oliveira, Maria A. G. Soler, F. Q. Soares, P.P.C. Sartoratto, Wesley Renato Viali, Paulo C. Morais, S.W. da Silva, J.R.L. Fernandez, Gustavo B. Alcantara

Publikováno v: Surface Science. 601:3921-3925

In this study γ-Fe 2 O 3 nanoparticle, surface-coated with increasing amount of oleic acid, have been prepared while the stability against particle degradation under laser excitation intensity was investigated. Maghemite nanoparticle was obtained vi

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::f3b4953c268510a95faba52d7653b5c9
https://doi.org/10.1016/j.susc.2007.04.029

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Adsorption at cell surface and cellular uptake of silica nanoparticles with different surface chemical functionalizations: impact on cytotoxicity

Autor: Gustavo B. Alcantara, Michèle Cottier, Andréa Kurtz-Chalot, Valérie Forest, Delphine Boudard, Matteo Martini, Valérie Bin, Jérémie Pourchez, Jean-Philippe Klein

Publikováno v: Journal of Nanoparticle Research
Journal of Nanoparticle Research, Springer Verlag, 2014, 16 (11), pp.2738. ⟨10.1007/s11051-014-2738-y⟩

International audience; Silica nanoparticles are particularly interesting for medical applications because of the high inertness and chemical stability of silica material. However, at the nanoscale their innocuousness must be carefully verified befor

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::06d9ed9f2c8be04a34ac84e42c1a78f4
https://doi.org/10.1007/s11051-014-2738-y

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Dielectric properties of cobalt ferrite nanoparticles in ultrathin nanocomposite films

Autor: Leonardo G. Paterno, Maria A. G. Soler, Gustavo B. Alcantara, Marcelo A. Pereira-da-Silva, Fernando Josepetti Fonseca, Paulo C. Morais

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Multilayered nanocomposite films (thickness 50–90 nm) of cobalt ferrite nanoparticles (np-CoFe2O4, 18 nm) were deposited on top of interdigitated microelectrodes by the layer-by-layer technique in order to study their dielectric properties. For tha

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::adc0951d190aa9ac6e30a49bf79636ce
https://pubmed.ncbi.nlm.nih.gov/24145704

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Layer-by-Layer assembled cobalt ferrite nanoparticles for chemical sensing

Autor: PauloC. Morais, Gustavo B. Alcantara, MariaA. G. Soler, LeonardoG. Paterno, MarceloA. Pereira-da-Silva, FernandoJ. Fonseca

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::1b9c98e9c9943ec2c37af42a0b574dee

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Internalization pathways into cancer cells of gadolinium-based radiosensitizing nanoparticles

Publikováno v: Biomaterials
Biomaterials, Elsevier, 2013, 34, pp.181-195. ⟨10.1016/j.biomaterials.2012.09.029⟩
Biomaterials, Elsevier, 2013, 34, pp.181-195. 〈10.1016/j.biomaterials.2012.09.029〉

International audience; Over the last few decades, nanoparticles have been studied in theranostic field with the objective of exhibiting a long circulation time through the body coupled to major accumulation in tumor tissues, rapid elimination, thera

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::ffc7f7151cef3ab76ad40cebb1fd409d
https://hal.archives-ouvertes.fr/hal-00757773

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Nanostructured Polymer Films Doped with Cobalt-ferrite Nanoparticles: a Raman Study

Autor: Gustavo B. Alcantara, Leonardo G. Paterno, Fernando J. Fonseca, Emilia C. D. Lima, Paulo C. Morais, Maria A. G. Soler, P. M. Champion, L. D. Ziegler

Publikováno v: AIP Conference Proceedings.

Nanocomposites of superparamagnetic iron oxide (SPIO) nanoparticles doped in polymeric matrices have been focus of intensive investigations due to potential applications in EMI shielding, spintronics and sensors. Apart of several methods, the layer-b

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_________::8932d236bfbf8e464477abdf4efd4294
https://doi.org/10.1063/1.3482361

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Adsorption of cobalt ferrite nanoparticles within layer-by-layer films: a kinetic study carried out using quartz crystal microbalance

Autor: Leonardo G. Paterno, Maria A. G. Soler, Marcelo A. Pereira-da-Silva, Paulo C. Morais, André S. Afonso, Gustavo B. Alcantara, Ronaldo C. Faria

Publikováno v: Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP

The paper reports on the successful use of the quartz crystal microbalance technique to assess accurate kinetics and equilibrium parameters regarding the investigation of in situ adsorption of nanosized cobalt ferrite particles (CoFe(2)O(4)--10.5 nm-

Externí odkaz: https://explore.openaire.eu/search/publication?articleId=doi_dedup___::a3d016d771501b6892cf7b7d4eddb908
https://doi.org/10.1039/c1cp22693b

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