Zobrazeno 1 - 10
of 17
pro vyhledávání: '"I. C. S. Carvalho"'
Autor:
Leonardo F. Araujo, I. C. S. Carvalho, Oswaldo Baffa, Eder José Guidelli, David R. Clarke, A. C. A. Assunção
Publikováno v:
Repositório Institucional da USP (Biblioteca Digital da Produção Intelectual)
Universidade de São Paulo (USP)
instacron:USP
Universidade de São Paulo (USP)
instacron:USP
We report a simple and fast microwave-assisted method to grow silver nanoparticle films with tunable plasmon resonance band. Microwaving time controls nucleation and growth as well as particle agglomeration, cluster formation, particle morphology, an
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::bddbea9cc2df65223c7d729fa934b2f7
Publikováno v:
Journal of Electronic Materials. 46:6848-6855
Polycrystalline Zn2TiO4 samples with Mn2+ doping level of 0%, 0.1%, 1.0%, and 5.0% have been produced by conventional solid-state method and their optical and structural properties investigated. Rietveld refinement of x-ray diffraction patterns revea
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::288350c5e8ac45f097a230999ea9136f
https://doi.org/10.1007/s11664-017-5742-z
https://doi.org/10.1007/s11664-017-5742-z
Publikováno v:
Journal of Luminescence. 182:39-44
The MgO-SiO 2 system with small quantities of MnCO 3 was produced by solid-state reaction at high temperature. The crystallographic phases and the amounts of components were determined by X-ray diffraction measurements. Emission and excitation spectr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a7bf5c2cb90879cdbcbb4c664d9cf6b5
https://doi.org/10.1016/j.jlumin.2016.09.062
https://doi.org/10.1016/j.jlumin.2016.09.062
Publikováno v:
Optical Materials. 60:506-512
This work presents photoluminescence data for gallium-niobium oxide with chromium ion as an impurity. The samples were obtained by the solid-state method (SSM) and the wet-chemical method (WCM) and investigated by X-ray diffraction, photoluminescence
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dbea2255586c0c427c19a8d0f537ad4a
https://doi.org/10.1016/j.optmat.2016.09.020
https://doi.org/10.1016/j.optmat.2016.09.020
Autor:
Anderson S. L. Gomes, Melissa Maldonado, G.K.B. Costa, I. C. S. Carvalho, Jake Fontana, L. de S. Menezes, Leonardo F. Araujo
Publikováno v:
2017 Conference on Lasers and Electro-Optics Europe & European Quantum Electronics Conference (CLEO/Europe-EQEC).
Metallic colloids can confine and focus light below the diffraction limit, leading to interesting properties and applications, such as metamaterials and sensors. However, accurate knowledge of the refractive indices of these colloids is critical to d
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::dca6f394162df605d13e054dc5766130
https://doi.org/10.1109/cleoe-eqec.2017.8086635
https://doi.org/10.1109/cleoe-eqec.2017.8086635
Publikováno v:
Materials Chemistry and Physics. 148:764-771
In this work, the optical properties of the gallium–niobium oxide doped with chromium ions were investigated. The samples were obtained by wet chemical and solid-state methods, investigated by X-ray powder diffraction and the data were refined by R
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::523bd3bd62a9817819d87c1b0a066409
https://doi.org/10.1016/j.matchemphys.2014.08.046
https://doi.org/10.1016/j.matchemphys.2014.08.046
Publikováno v:
Optical Materials. 35:543-546
We present the photoluminescence, excitation and photoacoustic spectra at room temperature of the system MgGa 2 O 4 –Ga 2 O 3 doped with Cr 3+ . The samples were prepared by solid state reaction and their formation was verified by X-ray diffraction
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e7e879105fd3d48f7e6f4b793f37b581
https://doi.org/10.1016/j.optmat.2012.10.008
https://doi.org/10.1016/j.optmat.2012.10.008
Publikováno v:
Physical Review Letters. 78:2172-2175
The etching rate of silica glass in 40% hydrofluoric acid under the influence of electric fields is studied with the help of an interferometric technique. A linear dependence of etching rate with field strength was found, with a $\ensuremath{\sim}2.5
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::90045d53a987e14990c5d730c5fad51f
https://doi.org/10.1103/physrevlett.78.2172
https://doi.org/10.1103/physrevlett.78.2172
Autor:
I. C. S. Carvalho, Anne Ingrid Birgitta Lidgard, Torbjörn Carlnäs, Walter Margulis, I. B. Couceiro
Publikováno v:
Optical Materials. 3:217-220
Erbium-doped fibers have been prepared for frequency doubling with various input powers. Annealing experiments were carried out, and a single exponential decay in time was found for the conversion efficiency. An activation energy of ~ 0.2 eV was meas
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e4ea1330c23c44105d60ce39f88f2c59
https://doi.org/10.1016/0925-3467(94)90007-8
https://doi.org/10.1016/0925-3467(94)90007-8
Autor:
I. C. S. Carvalho, Yves Quiquempois, Walter Margulis, Paula M. P. Gouvêa, Alexandre Kudlinski, G. A. Quintero, Gilbert Martinelli
Publikováno v:
Optics express. 14(26)
The spatial distribution of the second-order nonlinearity induced in thermally poled Infrasil silica samples is recorded after thermal annealing experiments. Two regimes have been studied: short and long poling durations. For short poling durations,
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::2593432f14c03759eee43e5c068f6d89
https://pubmed.ncbi.nlm.nih.gov/19532192
https://pubmed.ncbi.nlm.nih.gov/19532192