Quartz Nanoparticles
Mostrando 1-8 de 8 artigos, teses e dissertações.
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1. Optimization of ethanol flow rate for improved catalytic activity of Ni particles to synthesize MWCNTs using a CVD reactor
During synthesis of MWCNTs using CVD, role of carbonaceous material and catalyst, besides other process parameters, has considerable influence on the structure and yield of pristine nanotubes. In present study, different flow rates (i.e. 10, 25, 40 and 55 sccm) of precursor ethanol were used for the synthesis of MWCNTs at 750 ºC in a CVD reactor, where nick
Mat. Res.. Publicado em: 27/05/2014
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2. Desenvolvimento de imunossensores piezelétrico e eletroquímico para detecção de amostras de interesse agronômico e de saúde / Desenvolvimento de imunossensores piezelétrico e eletroquímico para detecção de amostras de interesse agronômico e de saúde / Development of piezoelectric and electrochemical immunosensors to detect samples of agronomic interest and public health / Development of piezoelectric and electrochemical immunosensors to detect samples of agronomic interest and public health
This work shows development of immunosensors for agronomic interest and public heath. The first was a piezoeletric immunosensor to detect a cysteine peptidase, a potencial biomarker for Xanthomonas citri subsp. citri that cause a citrus Canker. Another was electrochemical immunosensor based on gold nanoparticles as a label and magnetic beads as capture phase
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 23/07/2012
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3. Estabilização contra fotodegradação do co-polímero EVA por adição de nanopartículas de α- Al2O3/quartzo irradiado com raios gama para uso fotovoltaico / Estabilização contra fotodegradação do co-polímero EVA por adição de nanopartículas de α- Al2O3/quartzo irradiado com raios gama para uso fotovoltaico
As células solares precisam ser protegidas contra agressões do ambiente, caso contrário a eficiência de conversão fotovoltaica é reduzida. Para tanto, as células solares são encapsuladas. A radiação ultravioleta é a principal causa da degradação dos polímeros encapsulantes de módulos fotovoltaicos. A nanotecnologia tem muito a contribuir para
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 19/08/2011
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4. Obtenção e caracterização elétrica de filmes finos de SnO2:Sb / Deposition and electrical properties of sno2:sb films abstract
The growing demand for advanced electronic devices based on nanomaterials has motivated efforts to produce nanoscale building blocks with designed functions. Transparent conducting oxide nanocrystals (TCONs) are particularly promising for the development of such devices. TCONs synthesized in an organic medium play an important role as building blocks because
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/03/2011
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5. Interação da proteína albumina do soro bovino (BSA) com substratos sintéticos / Interaction of the protein bovine serum albumin (BSA) with synthetic substrates.
The interface formed by biological materials and synthetic materials has great importance in biomedical applications such as the development of biomaterials for medical implants, which has as an essential process of protein adsorption on the surface of biomaterials, and is not yet well understood in the molecular level. Some proteins undergo conformational c
Publicado em: 2010
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6. Protein decorated Nanoparticules : Small Unilamellar Lipid Vesicules and Block Copolymers Micelles. / Nanoparticules Décorées par des Protéines : Vésicules Lipidiques Unilamellaires et Micelies à Base de Copolymères à Blocs
The formation of protein Annexin-A5 decorated (bio-functionalized) nanoparticles is of particular interest in micelle-mediated target drug delivery, in vivo magnetic resonance imaging, or controlled fabrication of biochips. This work describes an easy access to the synthesis and manipulation of block copolymer nano-objects exhibiting binding ability for the
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia. Publicado em: 03/07/2008
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7. CaracterizaÃÃo Ãptica de materiais nanoestruturados por tÃcnicas de geraÃÃo de segundo e terceiro harmÃnico
This work is dedicated to the optical characterization of nanostructured materials that are of interest for non-linear optics, optoelectronics and nanophotonics. The hyper- Rayleigh scattering (HRS) technique and the third harmonic generation (THG) technique were used. The materials investigated were a glass-ceramics containing sodium niobate (NaNbO3) nanocr
Publicado em: 2007
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8. Estudo de nanotubos de carbono como fonte de elétron na geração de plasmas / Studies of carbon nanotubes as electron source for plasma generation
Aligned multiwalled carbon nanotubes films were produced by Microwave Plasma on Si/SiO2, Ti/TiN and quartz substrates. Ni and Fe nanoparticles were used as catalyst. The morphology and crystalline structures of the samples were analyzed by high resolution electron microscopy and by Raman spectroscopy. The Raman spectra have presented strong dependence on dia
Publicado em: 2006