Browsing QFA_Articles by Author "7275186f-d023-42c6-a6a5-6940d27668e7"
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Computational Modeling for the Ag Nanoparticle Coalescence Process: A Case of Surface Plasmon Resonance
Faccin, Giovani M.; San-Miguel, Miguel A.; Andres, Juan; Longo, Elson; da Silva, Edison American Chemical Society (2017-03)Motivated by recent transmission electron microscopy (TEM) experiments on α-Ag2WO4, the coalescence process of Ag nanoparticles (NPs) is investigated using molecular dynamics (MD) simulations. These Ag NPs are formed by ... -
Connecting Theory with Experiment to Understand the Sintering Processes of Ag Nanoparticles
da Silva, Edison; Faccin, Giovani M.; Machado, Thales Rafael; Guerra Macedo, Nadia; Assis, Marcelo de; Maya Johnson, Santiago; Sczancoski, Júlio César; Andres, Juan; Longo, Elson; San-Miguel, Miguel A. American Chemical Society (2019-04)A complementary combination of long-time atomistic molecular dynamics simulations and real-time transmission electron microscopy (TEM) images has been utilized for unraveling, at an atomic resolution, the nature of the ... -
Elucidating the real-time Ag nanoparticle growth on a-Ag2WO4 during electron beam irradiation: experimental evidence and theoretical insights
Da Silva Pereira, Wyllamanney; Andres, Juan; Gracia, Lourdes; San-Miguel, Miguel A.; da Silva, Edison; Longo, Elson; Longo, V. M. Royal Society of Chemistry (2015)Why and how Ag is formed when electron beam irradiation takes place on α-Ag2WO4 in a vacuum transmission electron microscopy chamber? To find an answer, the atomic-scale mechanisms underlying the formation and growth of ... -
Evidence for the formation of metallic In after laser irradiation of InP
Cabral, Luís; Andres, Juan; Machado, Thales Rafael; Picinin, Adalberto; Rino, José Pedro; Lopez-Richard, Victor; Longo, Elson; Gouveia, Amanda; Marques, Gilmar Eugenio; da Silva, Edison; San-Miguel, Miguel A. AIP Publishing (2019-07-12)Structural and electronic changes induced by laser irradiation are currently of interest owing to the possibility to tune the mechanical, optical, and transport properties of the irradiated materials. In this work, we ... -
Formation of Ag nanoparticles under electron beam irradiation: Atomistic origins from first-principles calculations
Andres, Juan; Gouveia, Amanda; Gracia, Lourdes; Longo, Elson; Faccin, Giovani M.; da Silva, Edison; Henrique Pereira, Douglas; San-Miguel, Miguel A. Wiley (2017-12)The formation of Ag nanoparticles is currently a topic subject to a great deal of research because they are excellent materials with many technological applications. Recently, the formation of Ag nanoparticles on α‐Ag2WO4 ... -
Formation of Metallic Ag on AgBr by Femtosecond Laser Irradiation
Cabral, Luís; Andres, Juan; Longo, Elson; San-Miguel, Miguel A.; da Silva, Edison MDPI (2022-06-01)Laser irradiation of materials induces changes in their structure and functional properties. In this work, lattice heating and electronic excitation on silver bromide (AgBr), provoked by femtosecond laser irradiation, ... -
In situ growth of Ag nanoparticles on alpha-Ag2WO4 under electron irradiation: probing the physical principles
San-Miguel, Miguel A.; da Silva, Edison; Zanetti, Sonia M.; Cilense, Mário; Fabbro, Maria T.; Gracia, Lourdes; Andres, Juan; Longo, Elson IOP Publishing Ltd (2016-04)Exploiting the plasmonic behavior of Ag nanoparticles grown on α-Ag2WO4 is a widely employed strategy to produce efficient photocatalysts, ozone sensors, and bactericides. However, a description of the atomic and electronic ...