Zobrazeno 1 - 10
of 122
pro vyhledávání: '"Pacheco-Peña Victor"'
Publikováno v:
Nanophotonics, Vol 12, Iss 20, Pp 3895-3909 (2023)
Developing methods to sense local variations in properties of nearby materials, such as their refractive index and thickness, are important in numerous fields including chemistry and biomedical applications. Localized surface plasmons (LSPs) excited
Externí odkaz:
https://doaj.org/article/2cb8475cdc8840548ba9b8bb8d9308de
Publikováno v:
Nanophotonics, Vol 10, Iss 14, Pp 3687-3699 (2021)
Multisection quarter-wave impedance transformers are widely applied in microwave engineering and optics to attain impedance-matching networks and antireflection coatings. These structures are mostly designed in the spatial domain (time harmonic) by u
Externí odkaz:
https://doaj.org/article/b1a4c266d1d54dd8a06144ac6d178b25
Autor:
Pacheco-Peña Victor, Engheta Nader
Publikováno v:
Nanophotonics, Vol 9, Iss 2, Pp 379-391 (2020)
Metamaterials are mostly designed in the time-harmonic scenario where wave propagation can be spatially manipulated. Tailoring the electromagnetic response of media in time has also gained the attention of the scientific community in order to achieve
Externí odkaz:
https://doaj.org/article/2bddb834357842e6929bf0b0c080e62f
Publikováno v:
Nanophotonics, Vol 9, Iss 5, Pp 1177-1187 (2020)
Plasmonic nanoantennas have revolutionized the way we study and modulate light–matter interaction. Due to nanofabrication limitations, dimer-type nanoantennas always exhibit some degree of asymmetry, which is desirable in some cases. For instance,
Externí odkaz:
https://doaj.org/article/0f9a92769754406bb339c98f48852e1e
Photonic computing has recently become an interesting paradigm for high-speed calculation of computing processes using light-matter interactions. Here, we propose and study an electromagnetic wave-based structure with the ability to calculate the sol
Externí odkaz:
http://arxiv.org/abs/2401.00861
Autor:
Pacheco-Peña, Victor, Engheta, Nader
Photonic time interfaces, as the temporal analogue of spatial interfaces between two media, consist of a rapid change of the electromagnetic properties of a material (such as permittivity {\epsilon}, and permeability {\mu}) while the wave is present
Externí odkaz:
http://arxiv.org/abs/2312.12233
A time interface (a rapid change of the constitutive parameters of a material in time), applied within an unbounded medium where a wave travels, can enable frequency conversion, and is considered the temporal analogue of a spatial interface between t
Externí odkaz:
http://arxiv.org/abs/2311.10855
It has been recently shown how computing operations such as high-speed switching, routing, and solving partial differential equations can be performed by exploiting perfect splitting of electromagnetic waves in networks of waveguides from microwaves
Externí odkaz:
http://arxiv.org/abs/2310.09317
Electromagnetic wave-based analogue computing has become an interesting computing paradigm demonstrating the potential for high-throughput, low power, and parallel operations. In this work, we propose a technique for the calculation of derivatives of
Externí odkaz:
http://arxiv.org/abs/2305.09443
We introduce a mechanism that can both hold and amplify electromagnetic waves by rapidly changing the permittivity of the medium during the wave travel from a positive to a dispersionless (i.e. non-Foster) negative value and then back again. The unde
Externí odkaz:
http://arxiv.org/abs/2304.03861