Listar por autoría "d2c92cf6-1a76-4d7b-bc39-fcab83ea8679"
Mostrando ítems 1-13 de 13
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A Joint Experimental and Theoretical Study on the Nanomorphology of CaWO4 Crystals
Longo, V. M.; Gracia, Lourdes; Stroppa, Daniel G.; Cavalcante, Laécio Santos; Orlandi, Marcelo; Ramírez, Antonio J.; Leite, Edson R.; Andres, Juan; Beltran, Armando; Varela, José A.; Longo, Elson ACS (2011-08)By the joint use of experimental techniques such as field emission scanning electron microscopy (FEG-SEM), transmission electron microscopy (TEM), and high resolution transmission electron microscopy (HR-TEM) and ab initio ... -
Anomalous oriented attachment growth behavior on SnO2 nanocrystals
Stroppa, Daniel G.; Montoro, Luciano A.; Beltran, Armando; Conti, Tiago G.; Da Silva, Rafael O.; Andres, Juan; Leite, Edson R.; Ramírez, Antonio J. Royal Society of Chemistry (2011)This work reports a detailed characterization of an anomalous oriented attachment behaviour for SnO2 nanocrystals. Our results evidenced an anisotropic growth for two identical 〈110〉 directions, which are equivalent according ... -
Back to the basics: probing the role of surfaces in the experimentally observed morphological evolution of ZnO
Gouveia, Amanda; Lemos, Samantha; Leite, Edson R.; Longo, Elson; Andres, Juan MDPI (2023-03-08)Although the physics and chemistry of materials are driven by exposed surfaces in the morphology, they are fleeting, making them inherently challenging to study experimentally. The rational design of their morphology and ... -
Disentangling the effects of Laser and electron irradiation on AgX (X = Cl, Br, and I) : insights from quantum chemical calculations
Cabral, Luis; Leite, Edson R.; Longo, Elson; San-Miguel, Miguel A.; da Silva, Edison; Andres, Juan American Chemical Society (2024-01-22)The effects on the lattice structure and electronic properties of different polymorphs of silver halide, AgX (X = Cl, Br, and I), induced by laser irradiation (LI) and electron irradiation (EI) are investigated using a ... -
Dopant segregation analysis on Sb:SnO2 nanocrystals
Beltran, Armando; Stroppa, Daniel G.; Montoro, Luciano A.; Conti, Tiago G.; Da Silva, Rafael O.; Andres, Juan; Leite, Edson R.; Ramírez, Antonio J. Wiley (2011-08-26)The development of reliable nanostructured devices is intrinsically dependent on the description and manipulation of materials properties at the atomic scale. Consequently, several technological advances are dependent on ... -
Laser-induced formation of bismuth nanoparticles
Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Gouveia, Amanda; Leite, Edson; Andres, Juan; Longo, Elson Royal Society of Chemistry (2018)In the current communication, the synthesis of metallic Bi nanoparticles with coexisting crystallographic structures (rhombohedral, monoclinic, and cubic) obtained via direct femtosecond laser irradiation of NaBiO3 is ... -
Laser/Electron Irradiation on Indium Phosphide (InP) Semiconductor: Promising Pathways to In Situ Formation of Indium Nanoparticles
Assis, Marcelo de; Guerra Macedo, Nadia; Machado, Thales Rafael; Ferrer, Mateus M.; Gouveia, Amanda; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Leite, Edson R.; Sambrano, Julio; Andres, Juan; Longo, Elson Wiley (2018)In the current study, whether femtosecond laser and electron beam irradiation of indium phosphide (InP) are “green,” fast, and effective methods to produce metallic In nanoparticles is probed. High-resolution transmission ... -
Prediction of dopant atom distribution on nanocrystals using thermodynamic arguments
Stroppa, Daniel G.; Montoro, Luciano A.; Campello, Antonio; Gracia, Lourdes; Beltran, Armando; Andres, Juan; Leite, Edson R.; Ramírez, Antonio J. Royal Society of Chemistry (2014)A theoretical approach aiming at the prediction of segregation of dopant atoms on nanocrystalline systems is discussed here. It considers the free energy minimization argument in order to provide the most likely dopant ... -
Structural properties and self-activated photoluminescence emissions in hydroxyapatite with distinct particle shapes
Machado, Thales Rafael; Sczancoski, Júlio César; Beltrán Mir, Héctor; Siu Li, Maximo; Andres, Juan; Cordoncillo, Eloisa; Leite, Edson R.; Longo, Elson Elsevier (2018-01)The understanding on defect-related photoluminescence (PL) properties of hydroxyapatite (HA) particles has a fundamental importance in the technological field for the development of new non-toxic biomedical and optical ... -
Surfactant-Mediated Morphology and Photocatalytic Activity of α‑Ag2WO4 Material
Guerra Macedo, Nadia; Gouveia, Amanda; Alvarez Roca, Roman; Assis, Marcelo de; Gracia, Lourdes; Andres, Juan; Leite, Edson R.; Longo, Elson American Chemical Society (2018-03)In the present work, the morphology (hexagonal rod-like vs cuboid-like) of an α-Ag2WO4 solid-state material is manipulated by a simple controlled-precipitation method, with and without the presence of the anionic surfactant ... -
Synthesis of Cuboctahedral CeO2 Nanoclusters and Their Assembly into Cuboid Nanoparticles by Oriented Attachment
Maya Johnson, Santiago; Gracia, Lourdes; Longo, Elson; Andres, Juan; Leite, Edson R. (2017)Here, we describe a simple approach to control the oriented attachment process through selective ligand scavenging from the {100} facets of CeO2 nanoclusters. Aggregates of these nanoclusters smaller than 10 nm with ... -
The hinge morphology of SnO2 as multifunctional semiconductor: What we can learn from simulations, theory, and experiments
Gouveia, Amanda; Aldao, Celso M.; Ponce, Miguel A.; Leite, Edson R.; Longo, Elson; Andres, Juan Elsevier (2023-06-15)Our interaction with materials occurs through their surfaces whose properties are strongly dependent on morphology, structure, and atomic arrangement. Unfortunately, obtaining a detailed correlation between the surface ... -
Towards the scale-up of the formation of nanoparticles on α -Ag 2 WO 4 with bactericidal properties by femtosecond laser irradiation
Assis, Marcelo de; Cordoncillo, Eloisa; Torres-Mendieta, Rafael; Beltrán Mir, Héctor; Mínguez-Vega, Gladys; Oliveira, Regiane; Leite, Edson R.; Foggi, Camila Cristina; Vergani, Carlos; Longo, Elson; Andres, Juan Nature Publishing Group (2018)In recent years, complex nanocomposites formed by Ag nanoparticles coupled to an α-Ag2WO4 semiconductor network have emerged as promising bactericides, where the semiconductor attracts bacterial agents and Ag nanoparticles ...