Zobrazeno 1 - 10
of 61
pro vyhledávání: '"Karlo Q. da Costa"'
Publikováno v:
International Journal of Antennas and Propagation, Vol 2021 (2021)
This paper presents an optimization of the radiation and absorption characteristics of modified Yagi-Uda (YU) nanoantenna arrays. Four geometries of antennas are considered: conventional YU fed by voltage source and transmission line, and YU with a l
Externí odkaz:
https://doaj.org/article/8df4e043b3684f878a8c9504d9fb8f66
Publikováno v:
International Journal of Antennas and Propagation, Vol 2020 (2020)
It is known that the periodic use of silver nanoantennas in organic solar cells increases the efficiency of light absorption. In this study, we performed a geometric parametric analysis of nanoantennas using the finite element method. Based on the st
Externí odkaz:
https://doaj.org/article/ad7ddbe1a3ea4d1c843d8854045cf7e5
Publikováno v:
International Journal of Antennas and Propagation, Vol 2017 (2017)
This paper presents a broadband nanoantenna fed by a two-wire optical transmission line (OTL). The antenna is defined by a combination of a dipole and a loop, where only the dipole element is connected to the OTL. The analysis is fulfilled by the lin
Externí odkaz:
https://doaj.org/article/acbc013a9f6e4a45adaf8a54ca2b274b
Autor:
Jefferson S. Costa, Quaid Zaman, Karlo Q. da Costa, Victor Dmitriev, Omar Pandoli, Giselle Fontes, Tommaso Del Rosso
Publikováno v:
Sensors, Vol 19, Iss 3, p 584 (2019)
The resonant wave modes in monomodal and multimodal planar Surface Plasmon Resonance (SPR) sensors and their response to a bidimensional array of gold nanoparticles (AuNPs) are analyzed both theoretically and experimentally, to investigate the parame
Externí odkaz:
https://doaj.org/article/3be86496126a414a8016fb74bfdae4ae
Autor:
Karlo Q. da Costa, Victor Dmitriev
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 9, Iss 2, Pp 123-130
In this paper, we present a quantitative comparison of circular and triangular gold nanodisks with the same length and thickness. The method of moments is used to solve numerically the scattering problem. With this model, we investigate the spatial n
Externí odkaz:
https://doaj.org/article/1e646f3f12ff4723b08c5e38913a38c0
Autor:
Karlo Q. da Costa, Victor A. Dmitriev
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 10, Iss 1, Pp 232-242
In this work, we analyze modified bowtie nanoantennas with polynomial sides in the excitation and emission regimes. In the excitation regime, the antennas are illuminated by an incident plane wave, and in the emission regime, the excitation is fulfil
Externí odkaz:
https://doaj.org/article/a205291023664e5eb8783185de7f1723
Autor:
Karlo Q. da Costa, Victor A. Dmitriev
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 325-335
In this paper, we present an analysis of the resonant response of modified triangular metallic nanoparticles with polynomial sides. The particles are illuminated by an incident plane wave and the method of moments is used to solve numerically the ele
Externí odkaz:
https://doaj.org/article/6af091e85dd44356b3d54be1e9ec2862
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 12, Iss 2, Pp 569-579
In this paper, we present an algorithm for full-wave electromagnetic analysis of nanoplasmonic structures. We use the three-dimensional Method of Moments to solve the electric field integral equation. The computational algorithm is developed in the l
Externí odkaz:
https://doaj.org/article/98888bf869f54a7f8028606b877d71fb
Autor:
Quaid Zaman, null Tahir, Fernando Lazaro Freire, Ivan Shtepliuk, Andre N. Barbosa, Marcelo E. H. Maia da Costa, Cesar Augusto Diaz Mendoza, Jefferson F. D. F Araujo, Guilherme C. Concas, Marco Cremona, Zubair Ahmed, Omar Ginoble Pandoli, Ricardo Q. Aucelio, Victor Dmitriev, Karlo Q. da Costa, André Felipe S. Cruz, Gabriella Fibbi, Anna Laurenzana, Francesca Margheri, Anastasia Chillà, Francesca Scavone, Elena Frediani, Rajwali Khan, Nicola Daldosso, Elena Chistè, Gino Mariotto, Evelyn C. S. Santos, Tommaso Del Rosso
Publikováno v:
The Journal of Physical Chemistry C. 126:13905-13919
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::e1b73354c309889876e30be4b2f3b8a5
https://doi.org/10.1021/acs.jpcc.2c02841
https://doi.org/10.1021/acs.jpcc.2c02841
Autor:
André Cruz, Quaid Zaman, Tommaso Del Rosso, Victor Dmitriev, Nadson Welkson Pereira de Souza, Karlo Q. da Costa
Publikováno v:
IET Microwaves, Antennas & Propagation. 14:2088-2096
In this study, the authors present an electromagnetic model of a nanodipole array above a double-layer Graphene (DLG) operating at Terahertz. The graphene layers deposited between the dielectric mediums are modelled as surface impedances with conduct
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_________::d62832ecdcdc836909901fff7522e083
https://doi.org/10.1049/iet-map.2020.0161
https://doi.org/10.1049/iet-map.2020.0161