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Now showing items 31-40 of 109
Estado polarônico de elétrons em canais quase unidimensionais na superfície de hélio líquido
(Universidade Federal de São Carlos, 1998-08-18)
In this work, we have investigated the polaronic state formed in the system of surface electrons
confined in a quasi-one-dimensional channel over liquid helium. The electrons bound to the surface
by a holding electric ...
Método de dinâmicas efetivas aplicado na análise da interação qubit-qubit em dispositivos supercondutores: a interação qubit-qubit no contexto da computação quântica
(Universidade Federal de São Carlos, 2022-02-23)
In this dissertation, we approach some aspects of quantum computing. At first, we detail the Deutsch-Jozsa algorithm and show how to implement it in real IBM quantum computers, available free of charge via remote access ...
Processamento e propriedades do sistema ferroelétrico livre de chumbo (Bi, Na)TiO3 (Bi, K)TiO3 BaTiO3
(Universidade Federal de São Carlos, 2015-03-09)
In this work, the lead-free ceramic powders of xBi0,5Na0,5TiO3 - (0,7186 - 0,7143x) Bi0,5K0,5TiO3 - (2814 - 2857x) BaTiO with x = 0,8200; 0,8625; 0,8792, 0,9126 and 0,9300 (BNBK1000x) were prepared by the solid state ...
Estudo dos efeitos da orientação do campo magnético sobre a estrutura eletrônica de poços quânticos semicondutores
(Universidade Federal de São Carlos, 2015-03-27)
This work is aimed to theoretically determine, based on the k p method, the energy spectrum
of the minimum of conduction band and the top of valence band, in a quantum well
heterostructure based on gallium arsenide, ...
Simetria de Lie de uma equação KdV com dispersão não-linear
(Universidade Federal de São Carlos, 2015-04-24)
The Rosenau-Hyman, or K(m, n), equations are a generalized version of the Korteweg-de
Vries (KdV) equation where the dipersive term is non-linear. Such partial differential
equations not always have a specific method by ...
Estudo comparativo entre duas teorias de perturbação dependentes do tempo em mecânica quântica
(Universidade Federal de São Carlos, 2016-02-25)
This monograph shows two perturbative methods to determine the time evolution of quantum systems described by time-depependent Hamiltonians. One method is the standard time-dependent perturbation theory usually found in ...
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 ...
Espectroscopia mecânica em tântalo
(Universidade Federal de São Carlos, 2007-03-15)
The mechanical spectroscopy technique applied to diffusion studies in body-centered cubic (BCC) metals, such as tantalum. Transition metals, as the tantalum, that has a crystalline structure (BCC), can dissolve large amounts ...
Síntese e caracterização de compósitos multiferroicos de manganita La: Sr e titanatos de Ba e Sr
(Universidade Federal de São Carlos, 2011-03-18)
In this paper, we seek to prepare composite multiferroics extrinsic whose potential for technological applications, especially in the electronics industry, and the possibility of new phenomena of fundamental scientific ...
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 ...