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Variações espaciais de temperatura e densidade eletrônica de regiões HII nas Nuvens de Magalhães
(Universidade Federal de Santa Maria, 2010-04-02)
The aim of this work had to estimate the physical proprieties of the HII region NGC 346 (belonging the Small Magellanic Cloud) and the estimation of electron density
at point-to-point to 17 other ionized nebulae, in ...
Transicões inversas em modelos fermiônicos de vidro de spin
(Universidade Federal de Santa Maria, 2010-08-26)
The present work studies inverse transitions by using two spin glass models: the infinite-range fermionic Ising spin glass (FISG) in the presence of a transverse magnetic field
¡ and Hopfield fermionic Ising spin glass ...
Estudo teórico da influência de um meio solvente na interação de aminoácidos com um nanotubo de carbono
(Universidade Federal de Santa Maria, 2010-09-24)
In this work we use the Density Functional Theory (DFT) to analyze the influence of a water environment in the interaction between amino acids and a semiconductor
carbon nanotube (CNT). To the study of the interaction in ...
Construção de um susceptômetro AC e a susceptibilidade magnética de microfios amorfos recobertos por vidro
(Universidade Federal de Santa Maria, 2010-03-30)
Glass covered microwires are materials with soft magnetic properties suitable to several technological applications, specially in magnetic sensors. The main feature of these
wires, with negative magnetostriction, it is the ...
Modelagem bidimensional de hidrofobicidade e superhidrofobicidade em superfícies de pilares
(Universidade Federal de Santa Maria, 2010-08-02)
In this work we investigate the use of the Potts Cellular Model in simulations of the water droplets on flat hydrophobic and pillarlike surfaces surrounded by gas.
Eight tests were chosen to validate the model, based on ...
Dinâmica de paredes de domínios em microfios amorfos recobertos por vidro
(Universidade Federal de Santa Maria, 2010-01-18)
Amorphous glass-coated microwires are materials with soft magnetic properties suitable for various technological applications, mainly magnetic sensors. One of the outstanding properties of microwires with positive ...
Produção e caracterização de filmes finos de ZnO
(Universidade Federal de Santa Maria, 2010-11-26)
Among the semiconducting oxides, ZnO has received considerable attention as a promising material for several applications in optoelectronic devices due to its high optical transparency in the visible range and good electrical ...
Espectroscopia de impedância elétrica do VO2
(Universidade Federal de Santa Maria, 2010-01-18)
Impedance Spectroscopy has been performed at the metal-semiconductor transition of vanadium dioxide thin films. The samples have been deposited by reactive magnetron sputtering onto heated glass substrates. The crystallographic ...
Anisotropias magnéticas em filmes finos de Co: uma análise por magnetometria de torque
(Universidade Federal de Santa Maria, 2010-12-03)
By studying the magnetic behavior of materials a very important parameter to be analyzed are the constants of anisotropy. They can be associated with an effective anisotropy energy or to a more specific one as, for example, ...
Estudo teórico de nanofitas de grafeno dopadas com Ni e Mn
(Universidade Federal de Santa Maria, 2010-07-16)
In this work we present the results of a systematic study of the stability, and the electronic, stuctural and magnetic properties of graphene nanoribbons doped with Ni (Ni/GNR) and Mn (Mn/GNR), through ab initio density ...