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Estudo computacional da difusão de água em nanotubos de carbono induzida por gradiente de pressão
(Universidade Federal de Santa Maria, 2013-02-08)
In this work we present a computational study of the properties of water transport
across membranes formed of carbon nanotubes (CNT) armchair with different diameters,
when subjected to pressure gradients 80-400 MPa. This ...
Crescimento de filmes finos de ni81fe19 para aplicações envolvendo magnetorresistência anisotrópica
(Universidade Federal de Santa Maria, 2011-05-13)
Anisotropic magnetoresistance (AMR) consists in the change of the resistivity of a ferromagnetic metal as a function of the angle between the current and the magnetization, what makes AMR-based sensors promising to measure ...
Estudo computacional da condutividade térmica de nanofios de Si
(Universidade Federal de Santa Maria, 2014-05-15)
In this work the thermal conductivity κ of Si nanowires using molecular dynamics simulations is calculated using the Müller-Plathe method. We show that at 500 K, κ for crystaline Si is 121; 557 W/mK, while for nanowires, ...
Estudo por dinâmica molecular da transição de fase estrutural de nanotubos de carbono por indução de pressão: um método ab initio
(Universidade Federal de Santa Maria, 2012-10-26)
This work aims to study the computational training of new phases of materials based on
carbon nanotubes using as precursor materials. The procedure consists in simulate bundle
formed by carbon nanotubes (NTC) (5, 5), (6, ...
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 ...
Fluxo de coerência quântica para um qubit evoluindo sobre a ação de canais quânticos
(Universidade Federal de Santa Maria, 2016-08-23)
Quantum Coherence (QC) has a fundamental role in Quantum Mechanics (QM). It has
been studied since the emergence of QM. However, this quantum feature is easily destroyed
when a physical system interacts with the environment. ...
Fluxo de metano na atmosfera sobre uma cultura de arroz irrigado por inundação no sul do Brasil
(Universidade Federal de Santa Maria, 2016-08-10)
The rice paddy is responsible for 12-16% of the anthropogenic emission of CH4 in the
world. Brazil is one of most important rice paddy producer. The goal of this study is to
understand the dynamics of methane exchange ...