Search Results - "Alencar, M. A. R. C."

Synthesis of colloids based on gold nanoparticles dispersed in castor oil by da Silva, E. C., da Silva, M. G. A., Meneghetti, S. M. P., Machado, G., Alencar, M. A. R. C., Hickmann, J. M., Meneghetti, M. R.

“…New colloidal solutions of gold nanoparticles (AuNP), using castor oil as a nontoxic organic dispersant agent, were prepared via three different methods. In…”
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Synthesis and characterization of multicolour fluorescent nanoparticles for latent fingerprint detection by SOBRAL, G A, GOMES, M A, MACEDO, Z S, ALENCAR, M A R C, NOVAIS, S M V

“…In this study, we successfully developed Y 2 O 3 nanoparticles doped with Tb 3 + and Eu 3 + ions to generate fluorescent images of latent fingerprints. The…”
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Frequency upconversion and two-photon absorption of salicylaldehyde azine 1 by Souza, A.B., Alencar, M.A.R.C., Cardoso, S.H., Valle, M.S., Diniz, R., Hickmann, J.M.

“…•Infrared-to visible upconversion was observed from salicylaldehyde azine crystals.•This phenomenon was characterized as a two-photon absorption process.•Large…”
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Size influence on temperature sensing of erbium-doped yttrium oxide nanocrystals exploiting thermally coupled and uncoupled levels' pairs by Brandão-Silva, Antonio C., Gomes, Maria A., Novais, Suellen M.V., Macedo, Zélia S., Avila, Jhon F.M., Rodrigues, J.J., Alencar, M.A.R.C.

“…The performance of Y2O3 nanocrystals with three distinct sizes, doped with 2 mol% of Er3+ ions, as nanothermometers, exploiting two different methodologies is…”
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One-step synthesis of YF3:Nd rod-like particles for contactless luminescent thermometers by Cruz, B.M., Lilge, T.S., Andrade, A.B., Moura, R.P.R., Alencar, M.A.R.C., Rodrigues Jr, J.J., Valerio, M.E.G., Macedo, Z.S.

“…Nd-doped YF3 rod-like particles have been obtained by one-step and fast synthesis using the microwave hydrothermal method. Before the investigation of the…”
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Second- and third-order nonlinear optical properties of unsubstituted and mono-substituted chalcones by Abegão, Luis M.G., Fonseca, Ruben D., Santos, Francisco A., Souza, Gabriela B., Barreiros, André Luis B.S., Barreiros, Marizeth L., Alencar, M.A.R.C., Mendonça, Cleber R., Silva, Daniel L., De Boni, Leonardo, Rodrigues, J.J.

“…•The values of the 1st hyperpolarizability of the chalcones molecules were of the same order of the PNA.•It was determined the two-photon cross section…”
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Bromo-and chloro-derivatives of dibenzylideneacetone: Experimental and theoretical study of the first molecular hyperpolarizability and two-photon absorption by Santos, Francisco A., Abegão, Luis M.G., Fonseca, Ruben D., Alcântara, Aline M., Mendonça, Cleber R., Valle, Marcelo S., Alencar, M.A.R.C., Kamada, Kenji, De Boni, Leonardo, Rodrigues, J.J.

“…•The first molecular hyperpolarizability (βHRS) of two DBA molecules was investigated.•Two-photon absorption cross-section (σ2PA) spectra of two DBA molecules…”
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Tailoring red-green-blue emission from Er3+, Eu3+ and Tb3+ doped Y2O3 nanocrystals produced via PVA-assisted sol-gel route by Sobral, G.A., Gomes, M.A., Avila, J.F.M., Rodrigues, J.J., Macedo, Z.S., Hickmann, J.M., Alencar, M.A.R.C.

“…Y2O3 luminescent nanoparticles were synthesized via PVA-assisted sol-gel method and their structural and optical properties were investigated. Effects of rare…”
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Tuning the nonlinear response of (6,5)-enriched single-wall carbon nanotubes dispersions by Aréstegui, O.S., Silva, E.C.O., Baggio, A.L., Gontijo, R.N., Hickmann, J.M., Fantini, C., Alencar, M.A.R.C., Fonseca, E.J.S.

“…Ultrafast nonlinear optical properties of (6,5)-enriched single-wall carbon nanotubes (SWCNTs) dispersions are investigated using the thermally managed Z-scan…”
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Causality-induced pulse steepening and shock-like waves in superluminal media by Hickmann, J M, Alencar, M A R C, Silva, W F, Souza, S T

“…Using pulses based on functions with compact support and perfectly smooth infinitely differentiable zero-intensity nonanalytical points, a new approach to…”
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Causality-induced pulse steepening and shock-like waves in superluminal media by Hickmann, J. M., Alencar, M. A. R. C., Silva, W. F., Souza, S. T.

“…Using pulses based on functions with compact support and perfectly smooth infinitely differentiable zero-intensity nonanalytical points, a new approach to…”
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Investigation of the electronic nonlinear refraction index of single-wall carbon nanotubes wrapped with different surfactants by Valadão, D. R. B., Pires, D. G., Alencar, M. A. R. C., Hickmann, J. M., Fantini, C., Pimenta, M. A., Fonseca, E. J. S.

“…Nonlinear optical properties of colloidal systems containing single wall carbon nanotubes (SWNT) disperse in different surfactants are investigated. Thermal…”
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Ultrafast dynamics of mesoionic liquid solutions studied with incoherent light by Menezes, L.de S., de Araújo, Cid B., Alencar, M.A.R.C., Athayde-Filho, P.F., Miller, J., Simas, A.M.

“…Optical Kerr shutter (OKS) measurements were performed in a solution of a mesoionic compound (MIC) in dimethylsulfoxide using 10 ns pulses of broadband noisy…”
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Erbium-doped sodium-lead and tungsten-lead metaphosphate glasses for temperature sensing by Momberg, R., Gomes, R. F., Poirier, G., Cassanjes, F. C., Hickmann, J. M., Alencar, M. A. R. C.

“…Frequency upconversion emission (UC) in visible region from Er 3+ -doped materials have been intensively investigated in the last decades and employed in the…”
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