Nanostructure Growth
Mostrando 1-10 de 10 artigos, teses e dissertações.
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1. Cell and Bacteria-Baterial Interactions on the Ti10Mo8Nb Alloy After Surface Modification
The purpose of this study is the surface modification of Ti10Mo8Nb experimental alloy by using TiO2 nanostructure growth. Ingots of the Ti10Mo8Nb experimental alloy were produced by fusion from sheets of molybdenum, niobium, and titanium commercially pure in an arc melting furnace under argon atmosphere. The potentiostatic anodic oxidation was performed usin
Mat. Res.. Publicado em: 18/06/2018
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2. Synthesis and characterization of water-dispersed CdSe/CdS core-shell quantum dots prepared via layer-by-layer method capped with carboxylic-functionalized poly(vinyl alcohol)
The main goal of this work was to synthesize CdSe/CdS (core-shell) nanoparticles stabilized by polymer ligand using entirely aqueous colloidal chemistry at room temperature. First, the CdSe core was prepared using precursors and acid-functionalized poly(vinyl alcohol) as the capping ligand. Next, a CdS shell was grown onto the CdSe core via the layer-by-laye
Mat. Res.. Publicado em: 09/05/2014
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3. Desenvolvimento e estudo físico-químico de compósitos de nanotubos de carbono / Physical chemical study and development of carbon nanotubes composites
This thesis presents for the first time nitrogen-cup-stacked carbon nanotubes with hydrophilic and semiconducting properties synthesized by alcohol precursor. The hybrid carbon fiber/carbon nanotubes composite have three-dimensional geometry and nanostructure. The material was prepared via fixed-bed chemical vapor deposition reactor. In this process nitrogen
Publicado em: 2010
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4. Diluted magnetic nanostructures in the presence of applied external fields / Estudo de nano estruturas diluídas magnéticas na presença de campos externos aplicados
In the present work we studied properties of the spintronic transport of nanostructures formed by layers of diluted magnetic semiconductors (DMS) and conventional semiconductors with crossed fields applied. The electric field is in the growth direction and the magnetic field is perpendicular t o this one. We studied two configurations of nanostructures where
Publicado em: 2008
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5. Nanoparticulas metalicas anisotropicas : mecanismos de formação e aplicações opticas / Anisotropic metal nanoparticles : formation mechanisms and optical applications
Noble metal nanoparticles have attracted a recent renewed interest due to the new scientific and technological applications exploiting their unique optical properties. At nanometric scale, it is well known that the optical response of metals, related to the excitation of surface plasmons, strongly depends not only on the size of the particles but also on the
Publicado em: 2008
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6. Materiais hÃbridos formados por nanofilmes moleculares depositados sobre nanofilmes metÃlicos produzidos por processo bottom-up em substratos vÃtreos para uso como parte ativa de nanodispositivos
In the present work we are investigating a hybrid systems formed by a thermally evaporated molecular nanofilm of rare earth complex over a metallic thin film obtained by a bottom-up process. To produce the new hybrid, we have deposited the photonic Eu(btfa)3bipy complex on a glassy substrate containing a silver nanostructured film formed by thermal reduction
Publicado em: 2008
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7. Growth and characterization of low dimensional structures for applications in the visible spectrum / Crescimento e caraterização de estruturas de baixa dimensionalidade para aplicações no espectro visivel
Os nitretos (Ga, Al, In)N assim como os compostos GaInP, GaCuO2, representam um sistema de materiais muito importante para as aplicações em opto-eletrônica e dispositivos tais como os diodos emissores de luz (LEDs), lasers e nanosensores. Entretanto, o requisito essencial para as aplicações industriais desses materiais é a redução em seus tamanhos. N
Publicado em: 2007
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8. Processing and characterization of fully and partial nanostructured alumina powders and ceramics / Processamento e caracterização de pós e de cerâmicas de alumina total e parcialmente nanoestruturadas
The opportune access to trustworthy agricultural information has become very important for the decision process of national and international agents. The use of remote sensing to map agricultural crops must consider their high dynamism, therefore the use of methods that consider their spectral-temporal profile is needed. The Mato Grosso State Brazil became o
Publicado em: 2007
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9. Processamento e caracterização de pós e de cerâmicas de alumina total e parcialmente nanoestruturadas / Processing and characterization of fully and partial nanostructured alumina powders and ceramics
O acesso oportuno à informação agrícola confiável tem se tornado cada vez mais importante para os processos de tomadas de decisões nacionais e internacionais. A utilização de técnicas de sensoriamento remoto com a finalidade de mapear culturas agrícolas deve levar em consideração o alto dinamismo das mesmas, sendo necessária a utilização de m�
Publicado em: 2007
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10. Efeitos nÃo lineares em lÃquidos orgÃnicos e meios nanoestruturados
In this thesis, we report studies of nonlinear transverse effects in organic liquids, carbon disulfide (CS2) and dimetil sulfoxide (DMSO), and of fluorescent emission effects in nanostructured media, more specifically, frequency upconversion in erbium doped barium titanate nanocrystals (BaTiO3:Er3+) and laserlike emission from inverted opal nanostructure of
Publicado em: 2004