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Itens para a visualização no momento 81-90 of 240
Peso de Drude em anéis unidimensionais com potenciais de substituição e atravessados por fluxo magnético
(Universidade Federal de São Carlos, 2002-04-11)
In the present work the Drude weight is calculated to study the capacity of conduction at finite temperatures in one-dimensional rings with the potencial given by the sequences of different degrees of randomness and threaded ...
Estudo da fusão de superfície da prata por dinâmica molecular
(Universidade Federal de São Carlos, 2008-07-23)
A study about surface melting on silver using equilibrium molecular dynamics simulation is the proposal of this work. We applied the Embedded Atom Method as the many-body interaction potential to describe Ag properties. ...
Estudo da interação de elétrons com moléculas relevantes à atmosfera
(Universidade Federal de São Carlos, 2008-07-30)
In this work, we present Absolute Elastic Differential (SCDE), Integral Elastic (SCIE) and Momentum-Transfer (SCTM) Cross Sections for electron scattering by n-Butane (C4H10), Benzene (C6H6), Methanol (CH3OH), Ethanol ...
Processos estocásticos de reação e difusão na rede e cadeias quânticas
(Universidade Federal de São Carlos, 2000-06-02)
In this work we investigate some reaction-difusion stochastic processes on the lattice. In particular, we determine the universality classes of critical behavior of a nonequilibrium surface growth process and of the basic ...
Caracterização magnética de filmes de cromo e cromocobalto preparados por eletrodeposição
(Universidade Federal de São Carlos, 2008-12-11)
Magnetic properties of electrodeposited of chromium and chromium-cobalt thin films on cooper substrate were investigated. The samples were prepared without introduction of additives. This procedure following to samples ...
Estrutura eletrônica de anéis quânticos
(Universidade Federal de São Carlos, 2011-08-09)
The nanoscopic structures with ring topology, or quantum rings, have attracted the interest due to their unique rotational symmetry and the possibility of checking fundamental quantum phenomena. Among them, the study of ...
Simulações por dinâmica molecular de compostos do tipo ABO3 (SrTiO3 e CaTiO3)
(Universidade Federal de São Carlos, 2009-02-26)
Using the classical molecular dynamics simulations, Perovskites systems composed by oxides (ABO3), in particular SrTiO3 and CaTiO3, were performed. The titanates are easily prepared as polycrystalline ceramics; chemically ...
Modelagem, simulação e otimização de transformadores piezoelétricos de modo radial para aplicações em conversão de potência
(Universidade Federal de São Carlos, 2008-11-26)
This work seeks to improve the modeling, analysis and the optimization of the parameters of piezoelectric transformer (PT) built with polarized Pb(Zr,Ti)O3 electro-ceramics for applications in power conversion, as well as ...
Estudo experimental e numérico da força de levitação magnética em supercondutores de alta temperatura crítica
(Universidade Federal de São Carlos, 2009-09-30)
In this research work we propose, in general, to address the issue of magnetic levitation force between a superconducting material and a permanent magnet. This is a very current and relevant mainly from a technological ...
Investigação por espectroscopia Mössbauer das fases formadas e sua influência na resistência à corrosão do aço inoxidável austenítico AISI 316L nitretado
(Universidade Federal de São Carlos, 2009-03-10)
The plasma nitriding is a technique that improves mechanical and tribological properties of metallic materials as hardness and wear. It improves also the corrosion resistance, because the nitrated layer is formed by phases ...