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Changing of the spontaneous polarization in niobate nanoparticles induced by non isovalent doping
(2015-01-01)
Ferroelectric niobates with tetragonal tungsten bronze TTB-type structure have shown great technology interest for application in pyroelectric detectors and piezoelectric transducers, sensor/filter in composite. The synthesis ...
DFT-based study of the structural, electronic and hyperfine properties of the semiconducting alloys Sn1-xTixO2: HSE06 and non-regular TB-mBJ approach
(Elsevier Science SA, 2019-11)
We present here a Density Functional Theory-based ab-initio study of the structural and electronic properties of the semiconducting alloys Sn1-xTixO2 for x in the range 0.0 (rutile SnO2) to 1.0 (rutile TiO2). The hyperfine ...
Phononic bandgap optimization in sandwich panels using cellular truss cores
(MDPI, 2021)
The development of custom cellular materials has been driven by recent advances in
additive manufacturing and structural topological optimization. These contemporary materials
with complex topologies have better structural ...
Optimization of a self-centering frictional damper (SCFD) and its application to non-linear structures
(2019)
Self-centering dissipating devices have been developed in the last decades to both mitigate seismic response and reduce residual drifts of structures. Recent large magnitude earthquakes have shown that most of the repair ...
The dynamics of thick curved beams constructed with functionally graded materials
(Pergamon-Elsevier Science Ltd, 2010-09)
During the last two decades materials, that exhibit graded properties, left their spirit of conceptual laboratory specimens to become a technological reality with a well established background. However structural applications ...
Intense and broad photoluminescence at room temperature in structurally disordered Ba[Zr0.25Ti0.75]O-3 powders: An experimental/theoretical correlation
(Pergamon-Elsevier B.V. Ltd, 2008-07-01)
Intense and broad photoluminescence (PL) emission at room temperature was observed on structurally disordered Ba[Zr0.25Ti0.75]O-3 (BZT) powders synthesized by the polymeric precursor method. BZT powders were annealed at ...
Intense and broad photoluminescence at room temperature in structurally disordered Ba[Zr0.25Ti0.75]O-3 powders: An experimental/theoretical correlation
(Pergamon-Elsevier B.V. Ltd, 2008-07-01)
Intense and broad photoluminescence (PL) emission at room temperature was observed on structurally disordered Ba[Zr0.25Ti0.75]O-3 (BZT) powders synthesized by the polymeric precursor method. BZT powders were annealed at ...
Theory of superplasticity in polycrystalline materials: Stress-induced structural instabilities of grain boundaries
(2005)
A fine mechanical analysis of a polycrystalline material subjected to large stresses must distinguish between intergranular and crystalline matter because they have different mechanical properties. Homogeneity is an illusion ...
Implementation of hospital waste replacing stony aggregates in non-structural concrete mixes of low resistance
(Contemporary Engineering SciencesBulgaria, 2018-11-29)
A non-structural concrete mix was elaborated with a resistance of 14.5
Megapascals under the parameters indicated in the American Concrete Institute
(ACI), ASTM and the Colombian Technical Standards (NTC). Six mixing
cylinders ...