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Mostrando ítems 91-100 de 105
Controle das propriedades estatísticas do campo e biestabilidade óptica em eletrodinâmica quântica de cavidades
(Universidade Federal de São Carlos, 2013-03-27)
We investigate in this thesis the control of absorptive optical bistability in a standing wave optical cavity filled with a collection of two and three-level noninteracting atoms weakly coupled to a single electromagnetic ...
Magneto luminescência em diodos de tunelamento ressonante contendo pontos quânticos de InAs
(Universidade Federal de São Carlos, 2011-03-15)
In this work, we have studied the spin polarization of carriers in n-type resonant tunneling diodes (RTDs) of GaAs/AlGaAs which incorporates a single layer of InAs selfassembled quantum dots in the center of the GaAs quantum ...
Experimentos em ondas e acústica para auxiliar o processo ensino e aprendizagem da física no ensino médio
(Universidade Federal de São Carlos, 2012-04-13)
This paper describes the development of experimental activities with the aid of the microcomputer as a measuring tool in the laboratory teaching of physics, as well as an account of his experience in the classroom. Using ...
Ondas gravitacionais e o espectro de anisotropia tensorial na presença de neutrinos cosmológicos
(Universidade Federal de São Carlos, 2012-07-10)
In this work we have studied the evolution of primordial gravitational waves coupled to anisotropic stress tensor of cosmological neutrinos. As in a radiation dominated universe, in a universe dominated by radiation and ...
Comunicação quântica baseada no teletransporte em variáveis contínuas
(Universidade Federal de São Carlos, 2014-12-12)
In this Thesis we study in details one of the most astonishing application of quantum mechanics which totally departs from our common sense: quantum teleportation in continuous variables. We present a review of the postulates ...
Fabricação e caracterização elétrica de dispositivos orgânicos emissores de luz derivados de poli-p(fenilene vinilene) (PPV)
(Universidade Federal de São Carlos, 2010-03-16)
Molecularly doped polymers have been widely studied in recent years due to their electronic and optical properties, and application in the manufacture of opto-electronic devices, light emitting diodes (LED) and others. ...
Processamento e caracterização de compósitos laminados de La0.7Ba0.3MnO3/BaTiO3
(Universidade Federal de São Carlos, 2015-02-13)
Multiferroic laminated ceramic composites consisting of piezoelectric (BaTiO3, phase B) and magnetostrictive (Lao.7Bao.3MnO3, phase L) materials were synthesized by the Pechini and solid state reaction (SSR) method. Barium ...
Desenvolvimento de um algoritmo numérico na técnica do operador diferencial : aplicações em modelos de spins
(Universidade Federal de São Carlos, 2012-10-11)
In this work, we present the results obtained for Ising models and Heisenberg spin 1/2, where
two and three-dimensional, with disorder or frustration. We apply effective field theory
associated with the Operator Differential ...
Propriedades magneto-óticas e de magneto-transporte de um diodo de tunelamento ressonante contendo Si δ - doping no poço quântico
(Universidade Federal de São Carlos, 2011-03-11)
In this work, we have studied the transport and optical properties of GaAs = AlGaAs resonant tunneling diodes with Si delta-doping at the center of the quantum well. We have studied magneto-transport and polarized resolved ...
Síntese e caraterização de MgxPb(1-x)TiO3
(Universidade Federal de São Carlos, 2015-08-14)
We report the investigation of structural, optical and electrical properties of the MgxPb(1-
x)TiO3 ceramic system produced by mechanosynthesis. The solid state reaction
manufacturing method has been proved to be an ...