Zobrazeno 1 - 10
of 11
pro vyhledávání: '"Diego Tami"'
Publikováno v:
Journal of Microwaves, Optoelectronics and Electromagnetic Applications, Vol 23, Iss 1 (2024)
Abstract In this article, a comprehensive analysis of the approach known as Split-Step Wavelet Parabolic Equation (SSW-PE) in modeling radio wave propagation is presented. The SSW-PE introduces innovations, such as the application of narrow-angle and
Externí odkaz:
https://doaj.org/article/8be8d7b0840f4ed498f4120c5e62f110
Autor:
Douglas A. A. Ohlberg, Diego Tami, Andreij C. Gadelha, Eliel G. S. Neto, Fabiano C. Santana, Daniel Miranda, Wellington Avelino, Kenji Watanabe, Takashi Taniguchi, Leonardo C. Campos, Jhonattan C. Ramirez, Cássio Gonçalves do Rego, Ado Jorio, Gilberto Medeiros-Ribeiro
Publikováno v:
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Here, the authors image twisted bilayer graphene using scanning microwave imaging microscopy, revealing structures with sizes down to 1 nm. They show that is possible by using spontaneously forming nanoscale water menisci that concentrates the microw
Externí odkaz:
https://doaj.org/article/7774f8a91c664429a2e60a6ad688e01f
Autor:
Diego Tami, Cássio G. Rego, Dinael Guevara, Andrés Navarro, Fernando J. S. Moreira, Jordi Giménez, Hernan G. Triana
Publikováno v:
International Journal of Antennas and Propagation, Vol 2018 (2018)
We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban scenarios and canonical examples of diffraction by lossy conducting wedges using the three s
Externí odkaz:
https://doaj.org/article/1e420bffbf0e4df2a3bc47ea014eca72
Autor:
Diego Tami, Douglas A. A. Ohlberg, Jhonattan C. Ramirez, Cássio Gonçalves do Rego, Gilberto Medeiros-Ribeiro
Publikováno v:
Conference on Lasers and Electro-Optics.
In this work, we analyzed numerically a multiscale nanosystem based on sMIM on TBG. Spontaneous formation of a water-meniscus by the approximation between the tip-sample concentrates the microwave fields, reaching resolutions of up to 1nm.
Autor:
Douglas A. A. Ohlberg, Leonardo C. Campos, Gilberto Medeiros-Ribeiro, Ado Jorio, Eliel G. S. Neto, Diego Tami, Wellington Avelino, Kenji Watanabe, Daniel Miranda, Jhonattan C. Ramirez, Takashi Taniguchi, Fabiano C. Santana, Cassio G. Rego, Andreij C. Gadelha
Publikováno v:
Nature Communications
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Nature Communications, Vol 12, Iss 1, Pp 1-6 (2021)
Molecular and atomic imaging required the development of electron and scanning probe microscopies to surpass the physical limits dictated by diffraction. Nano-infrared experiments and pico-cavity tip-enhanced Raman spectroscopy imaging later demonstr
Autor:
Diego Tami, Elson J. Silva, Paulo Tibúrcio Pereira, Glaucio Lopes Ramos, Sandro T. M. Goncalves, Pablo R. de Andrade
Publikováno v:
2020 14th European Conference on Antennas and Propagation (EuCAP).
This paper presents preliminary results about multiple screen diffraction loss obtained using the parabolic equation technique. The numerical simulation is compared with a measurement campaign performed at microwave frequencies. The main contribution
Publikováno v:
2019 SBMO/IEEE MTT-S International Microwave and Optoelectronics Conference (IMOC).
This work presents a study about impedance matching in a microwave device formed by the junction of waveguides. These transitions are characterized by a probe antenna that ensures the electromagnetic field coupling between waveguides of different geo
Publikováno v:
2018 International Conference on Electromagnetics in Advanced Applications (ICEAA).
This work presents a study about a analytical technique used to model the wave coupling from a coaxial line fed probe to a waveguide device with promising applications in the Additive Manufacturing (AM). The analytical technique estimates the input i
Autor:
Hernan G. Triana, Fernando J. S. Moreira, Diego Tami, Andres Navarro, Jordi Joan Gimenez, Cassio G. Rego, Dinael Guevara
Publikováno v:
Repositorio Digital UFPS
UNIVERSIDAD FRANCISCO DE PAULA SANTANDER
instacron:Universidad Francisco de Paula Santander
International Journal of Antennas and Propagation, Vol 2018 (2018)
UNIVERSIDAD FRANCISCO DE PAULA SANTANDER
instacron:Universidad Francisco de Paula Santander
International Journal of Antennas and Propagation, Vol 2018 (2018)
We discuss three sets of heuristic coefficients used in uniform theory of diffraction (UTD) to characterize the electromagnetic scattering in realistic urban scenarios and canonical examples of diffraction by lossy conducting wedges using the three s
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::17c5206542a65c22eab242c8a60d7c36
http://repositorio.ufps.edu.co/handle/ufps/879
http://repositorio.ufps.edu.co/handle/ufps/879
This paper presents a comparison of three heuristic coefficients for the Uniform Theory of Diffraction (UTD), used to characterize the radiowave scattering in typical urban scenarios. The coefficients were implemented in a propagation model based on
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::46b6ed8f6fd7766618f0720f29190600
http://repository.icesi.edu.co/biblioteca_digital/handle/10906/82848
http://repository.icesi.edu.co/biblioteca_digital/handle/10906/82848