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Concreto alternativo para pavimentos rodoviários
(Universidade do Vale do Rio dos Sinos, 2020-12-02)
In order to find an alternative concrete for road paving, it was in search of materials able to be reused and/or extracted from the natural environment with ease. For the manufacture of alternative concrete, the alkali-activated ...
Ab initio characterization of linear C3Si isomers
(EDP SCIENCES S A, 2008-08)
Aims. This paper presents an ab initio characterization of linear isomers of C3Si, which are suitable species for astrophysical detection in carbon-rich sources. Methods. By the help of multiconfigurational calculations, ...
Concreto alternativo para pavimentos rodoviários
(Universidade do Vale do Rio dos Sinos, 2020-12-02)
In order to find an alternative concrete for road paving, it was in search of materials able to be reused and/or extracted from the natural environment with ease. For the manufacture of alternative concrete, the alkali-activated ...
Oxazine Ring-Related Vibrational Modes of Benzoxazine Monomers Using Fully Aromatically Substituted, Deuterated, 15N Isotope Exchanged, and Oxazine-Ring-Substituted Compounds and Theoretical Calculations
(American Chemical Society, 2017-08)
Polymerization of benzoxazine resins is indicated by the disappearance of a 960-900 cm-1 band in infrared spectroscopy (IR). Historically, this band was assigned to the C-H out-of-plane bending of the benzene to which the ...
Effect of Doping and Morphology on UV Emission in Low-Dimensional ZnO:Na Structures
(Wiley VCH Verlag, 2018-08)
Band-edge photoluminescence of zinc oxide materials reveals a phonon-assisted ultraviolet emission enhanced by Na doping. We report the synthesis of ZnO and Na-doped ZnO, the changes in structure and optical properties as ...
Optical properties and sensor applications of bimetallic nanostructures of porphyrins
(Elsevier Science, 2014-03)
The cationic Cu(II) and Fe(III) complexes of tetra(4-pyridyl)porphyrin [T4PyP]4+ have been combined with the anionic [H4TPPS]2− to obtain bimetallic J-aggregate nanostructures defined by the tendency to form the FeIIIOCuII ...
Transient surface photovoltage of p-type Cu3BiS3
Thin films of Cu3BiS3 were prepared by coevaporation. Hall-effect, Seebeck-effect, and surface photovoltage measurements show that Cu3BiS3 is a p-type semiconductor with Hall-mobility, free carrier concentration, and ...
Franz-Keldysh effect in epitaxial ZnO thin films
(American Institute of Physics, 2018-02)
Photoconductance spectroscopy has been studied in epitaxial ZnO thin films with different thicknesses that range between 136 and 21 nm. We report a systematic decrease in photoconductivity and a red shift in band edge ...