J
Juan Andrés
Researcher at James I University
Publications - 516
Citations - 15520
Juan Andrés is an academic researcher from James I University. The author has contributed to research in topics: Ab initio & Density functional theory. The author has an hindex of 60, co-authored 493 publications receiving 13499 citations. Previous affiliations of Juan Andrés include Venezuelan Institute for Scientific Research & Federico Santa María Technical University.
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Crystal growth in colloidal tin oxide nanocrystals induced by coalescence at room temperature
TL;DR: In this article, the authors report on experimental evidence indicating that another crystal growth process took place in a colloidal nanocrystal system at room temperature, based on grain rotation among neighboring grains, resulting in a coherent grain-grain interface.
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Structural and optical properties of CaTiO3 perovskite-based materials obtained by microwave-assisted hydrothermal synthesis: An experimental and theoretical insight
Mário Lúcio Moreira,Elaine C. Paris,Gabriela do Nascimento,Valeria M. Longo,Julio R. Sambrano,Valmor Roberto Mastelaro,Maria Inês Basso Bernardi,Juan Andrés,José Arana Varela,Elson Longo +9 more
TL;DR: In this article, CaTiO3 powders were synthesized using both a polymeric precursor method (CTref) and a microwave-assisted hydrothermal (CTHTMW) method in order to compare the chemical and physical properties of the perovskite-based material as a function of the synthesis method.
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Morphology and Blue Photoluminescence Emission of PbMoO4 Processed in Conventional Hydrothermal
Júlio C. Sczancoski,M. D. R. Bomio,Laécio S. Cavalcante,Miryam R. Joya,P. S. Pizani,José Arana Varela,Elson Longo,M. Siu Li,Juan Andrés +8 more
TL;DR: PbMoO4 micro-octahedrons were prepared by the coprecipitation method at room temperature without the presence of surfactants and processed in a conventional hydrothermal at different temperatures (from 60 to 120 °C) for 10 min this paper.
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Understanding reaction mechanisms in organic chemistry from catastrophe theory applied to the electron localization function topology.
TL;DR: The identification of the turning points connecting the ELF structural stability domains along the reaction pathway allows a rigorous characterization of the sequence of electron pair rearrangements taking place during a chemical transformation.
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An Aromaticity Scale Based on the Topological Analysis of the Electron Localization Function Including σ and π Contributions
TL;DR: The average bifurcation value of the electron localization function (ELF) of both σ (ELFσ) and π (ELFπ) contributions was used to construct an aromaticity scale for chemical compounds and predicts an overall antiaromatic character for the Al4(4)(-) moiety.