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Propriedades elétricas e estruturais do niobato de potássio e estrôncio obtido pelo método de Pechini
(Universidade Federal de São Carlos, 2015-06-19)
The
search for new technologies more efficient and environmentally sustainable,
triggered the search for new materials and synthesis routes that present a low
economic and energy impact. In this context, potassium and ...
Estudo teórico de propriedades estruturais e elétricas de filmes automontados de moléculas orgânicas
(Universidade Federal de São Carlos, 2014-11-21)
Compact models of ionized and nonionized Langmuir monolayers of stearic acid adsorbed on the water were simulated by means of atomistic molecular dynamics. The electrostatic, structural and dynamic properties of the molecules ...
Síntese de nanopartículas semicondutoras de seleneto de zinco (ZnSe) aquoso e análise dos subprodutos decorrentes dessa síntese
(Universidade Federal de São Carlos, 2012-07-20)
Zinc selenide (ZnSe) is a semiconductor material, which band gap is about 2.7 eV. It has many applications as blue light emission diode, data storage devices, laser diodes and waveguides optical fibers. Despite these several ...
Determinação simultânea de íons metálicos por meio de técnicas eletroanalíticas e quimiométricas
(Universidade Federal de São Carlos, 2011-05-19)
In this work, the determination of three metallic ions was performed, namely Zn2+, Cd2+ and Pb2+, in very different concentration range, from _g/L until mg/L, using differential pulse anodic stripping voltammetry over ...
Estudo do efeito isotópico sobre a solubilidade da 3- metilpiridina em H2O e D2O
(Universidade Federal de São Carlos, 2012-12-07)
Experimental studies of 3-methylpiridyne/water and 3- methylpiridyne/heavy water binary mixtures show solubility differences. In this work Molecular Dynamics method was used to simulate 54 model systems. Each system ...
Materiais híbridos obtidos pela adsorção de nanopartículas metálicas sobre fungos micelares pelo efeito biotemplate
(Universidade Federal de São Carlos, 2014-02-18)
The use of bio-design concepts is a promising strategy for obtaining materials with properties of great scientific and technological interest. There are numerous examples of materials obtained by employing concepts of ...
Síntese e propriedades fotocatalíticas de heteroestruturas TiO2/SnO2
(Universidade Federal de São Carlos, 2014-03-14)
Heterostructures, systems containing two dissimilar semiconductors in direct contact, has been applied in heterogeneous photocatalysis due to their electronic properties. This work aimed at studying heterostructures ...
Estudo da ruptura dielétrica durante a anodização de zircônio e o seu efeito sobre o processo de dopagem anódica de ZrO2
(Universidade Federal de São Carlos, 2012-05-09)
In this work the fundamental aspects of electrolytic breakdown in ZrO2 films were investigated. The electrolytic breakdown is a type of dielectric breakdown that occurs during galvanostatic growth of anodic oxides. To ...
Confinamento de líquidos em nanoescala
(Universidade Federal de São Carlos, 2012-02-27)
The effects on the reduction of space on the structural properties of two liquids and a mixture thereof were analyzed with a definition of nanoscale confinement, based on carbon nanotubes. The methodology involves the use ...
Estudo da atividade eletrocatalítica de multicamadas metálicas de Ir/Pt e Cu/Pt eletrodepositadas sobre Pt(policristalina) para eletrooxidação de moléculas orgânicas pequenas
(Universidade Federal de São Carlos, 2013-09-26)
The search for alternative energy sources stead fossil fuel has driven the development of new energy generating devices. Among these, the Direct Alcohol Fuel Cells are a kind of device that directly convert chemical energy ...