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Sistemas bidimensionais formados por silício e germânio: um estudo de primeiros princípios
(Universidade Federal de Santa Maria, 2015-07-14)
First principles calculations within the density functional theory have been used to
study the main structural, energetic, electronic, and optical properties of hydrogenated Si
and Ge in the 2D structures (silicane and ...
Transição semicondutor-metal em nanocristais de VO2 termoeletricamente ativada
(Universidade Federal de Santa Maria, 2015-05-26)
In this thesis, structural and electrical characteristics are investigated around the thermally
triggered semiconductor to metal transition in VO2 thin films. The films, the metallics
electrodes, as well as SiO2 buffer ...
Mapeamento espectroscópico de propriedades físicas dos remanescentes de supernova N49 e N11L
(Universidade Federal de Santa Maria, 2015-06-09)
Supernova remnants allow to derive many physical properties of the medium where they
lie, such as temperature, density and chemical abundances. Some of the physical characteristics of these objects may differ significantly ...
Escalas temporais do escoamento noturno dentro e acima de um dossel na Amazônia
(Universidade Federal de Santa Maria, 2015-07-17)
This work uses data from the three components of wind and temperature, collected in
an experimental site in the Amazon rainforest for 10 months during GOAmazon Project. A
total of 10 levels of sensors were deployed on a ...
Estudo de junções túnel magnéticas com barreiras isolantes piezoelétricas de AlN
(Universidade Federal de Santa Maria, 2015-01-20)
We analyze the possibility of using aluminum nitride (AlN) as a piezoelectric tunnel barrier
in magnetic or non-magnetic tunnel junctions. Samples in the form of monolayers, bilayers,
multilayers and tunnel junctions ...
Usando a decomposição em modos empíricos para determinação de fluxos turbulentos entre oceano/atmosfera
(Universidade Federal de Santa Maria, 2015-04-08)
Turbulent fluxes may be directly determined as the statistical covariance between
quantities locally observed. Besides environmental and instrumental difficulties associated
with taking high frequency measurements over ...