Zobrazeno 1 - 10
of 107
pro vyhledávání: '"Paulo Sérgio Soares Guimarães"'
Autor:
Matheus Corrêa Dantas Avelar, Tarcisio Passos Ribeiro Campos, Túlio Henrique Lopes Gomes de Castro, Paulo Sérgio Soares Guimarães
Publikováno v:
Brazilian Journal of Radiation Sciences, Vol 9, Iss 1A (2021)
Ionizing radiation has been employed in conjunction with various clinical modalities for therapeutic purposes. Often, surgery, chemo and radiation therapies have been combined on the arsenal against cancer. Nontraditional techniques, as Tumor Treatin
Externí odkaz:
https://doaj.org/article/4e54cf82a1af40c08484700f6e08917b
Autor:
Paulo Sérgio Soares Guimarães, Luíz Alberto Cury, Sidney Alves Lourenço, Edson Laureto, José Leonil Duarte, Flávio Alexandre Costa de Oliveira, Ivan Frederico Lupiano Dias, Marco Aurélio Toledo da Silva
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 29, Iss 1, Pp 15-38 (2008)
We present a study on the optical properties of thin flms of poly[2-methoxy-5-(20-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV) produced at a concentration of 10 mg/ml xylene. The solution was deposited onto glass substrates by the spin-coating t
Externí odkaz:
https://doaj.org/article/7a75565960564785be9474163b6f9133
Autor:
Harmand Jean Christophe, Luiz Alberto Cury, Paulo Sérgio Soares Guimarães, Dari Oliveira Toginho Filho, Edson Laureto, José Leonil Duarte, Ivan Frederico Lupiano Dias, Luiz Carlos Poças, Élder Mantovani Lopes
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 25, Iss 2, Pp 183-196 (2004)
Photoluminescence (PL) measurements due to temperature and excitation power were carried out in as function of sample containing a In0,53Ga0,47. As layer, grown by Molecular Beam Epitaxy on an InP substrate. The origins of the several luminescence pr
Externí odkaz:
https://doaj.org/article/3f0a18c924d349e082106e0cfb3f6cad
Autor:
Marco Aurélio Toledo da Silva, Flávio Alexandre Costa de Oliveira, Ivan Frederico Lupiano Dias, José Leonil Duarte, Edson Laureto, Sidney Alves Lourenço, Luíz Alberto Cury, Paulo Sérgio Soares Guimarães
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 29, Iss 1 (2008)
Apresentamos um estudo das propriedades ópticas de filmes finos de poly[2-methoxy-5-(20-ethyl-hexyloxy)-1,4-phenylene vinylene] (MEH-PPV), preparados em uma concentração de 10 mg/ml de xileno. A solução foi depositada sobre substrato de vidro po
Externí odkaz:
https://doaj.org/article/1e1ac48ebe5d472b81609ea79be86ffa
Autor:
Luiz Carlos Poças, Élder Mantovani Lopes, José Leonil Duarte, Ivan Frederico Lupiano Dias, Edson Laureto, Dari Oliveira Toginho Filho, Paulo Sérgio Soares Guimarães, Luiz Alberto Cury, Harmand Jean Christophe
Publikováno v:
Semina: Ciências Exatas e Tecnológicas, Vol 25, Iss 2 (2004)
Medidas de fotoluminescência (PL) em função da temperatura e da potência de excitação foram realizadas em uma amostra contendo uma camada de In0,53Ga0,47As crescida pela técnica de epitaxia por feixe molecular-MBE (Molecular Beam Epitaxy) sobr
Externí odkaz:
https://doaj.org/article/07ed2fa7c6ea43c081c24b16e5373a9a
Autor:
Wescley Walison Valeriano, Rodrigo R. de Andrade, Angelo Malachias, Wagner N. Rodrigues, Bernardo R. A. Neves, J. P. Vasco, Paulo Sérgio Soares Guimarães
Publikováno v:
Beilstein Journal of Nanotechnology
Beilstein Journal of Nanotechnology, Vol 12, Iss 1, Pp 139-150 (2021)
Beilstein Journal of Nanotechnology, Vol 12, Iss 1, Pp 139-150 (2021)
The aim of this work is to determine the varying dielectric constant of a biological nanostructured system via electrostatic force microscopy (EFM) and to show how this method is useful to study natural photonic crystals. We mapped the dielectric con
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::879b3574edbbc20b96bc243dd29e40f6
https://doi.org/10.3762/bjnano.12.11
https://doi.org/10.3762/bjnano.12.11
Autor:
Ailton J. Garcia Junior, Rogerio Magalhães-Paniago, Barbara L. T. Rosa, Paulo Sérgio Soares Guimarães, Ch. Deneke, Angelo Malachias, Carlos A. Parra-Murillo, Thais Chagas
Publikováno v:
ACS Applied Nano Materials. 2:4655-4664
Nanoscale heterostructure engineering is the main target for the development of optoelectronic devices. In this sense, a precise knowledge of local electronic response after materials processing is...
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d7bf1d4f3a65c964616d6581e2576b9a
https://doi.org/10.1021/acsanm.9b01124
https://doi.org/10.1021/acsanm.9b01124
Autor:
Tarcísio Passos Ribeiro de Campos, Matheus Corrêa Dantas Avelar, Túlio Henrique Lopes Gomes de Castro, Paulo Sérgio Soares Guimarães
Publikováno v:
Brazilian Journal of Radiation Sciences. 9
Ionizing radiation has been employed in conjunction with various clinical modalities for therapeutic purposes. Often, surgery, chemo and radiation therapies have been combined on the arsenal against cancer. Nontraditional techniques, as Tumor Treatin
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::a8b402e519701fc50d971dc89b0252f2
https://doi.org/10.15392/bjrs.v9i1a.1458
https://doi.org/10.15392/bjrs.v9i1a.1458
Autor:
L. E. Pedraza Caballero, Jhonattan C. Ramirez, Omar P. Vilela Neto, Paulo Sérgio Soares Guimarães, Michelle L. Povinelli
Publikováno v:
DSD
Here we propose an integrated and compact photonic crystal (PhC) device that can operate as a NAND or NOR logic gate. It is designed in a PhC slab composed of GaAs/AlGaAs heterostructure and a 2D pattern of a triangular lattice of holes. By modifying
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e6e4b077e2c2613839a18e6aaaadf7f8
https://doi.org/10.1109/dsd51259.2020.00073
https://doi.org/10.1109/dsd51259.2020.00073
Autor:
Luis Eduardo Pedraza Caballero, Paulo Sérgio Soares Guimarães, Omar P. Vilela Neto, Juan Pablo Vasco Cano
Publikováno v:
IEEE Photonics Journal, Vol 9, Iss 5, Pp 1-15 (2017)
In this paper, we study the effect of structural disorder on photonic crystals logic gates applying a new approach based on the evaluation of two metrics: the error rate (ER) and the mean absolute deviation of transmission of the error cases (MATEC).
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::35177d41a4e4e487aa7f3bd5b5f8a29e
https://doi.org/10.1109/jphot.2017.2736946
https://doi.org/10.1109/jphot.2017.2736946