Listar Artículos de revista DIEC - IEKS Aldizkari artikuluak por autor "Engheta, Nader"
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Direct observation of ideal electromagnetic fluids
Li, Hao; Zhou, Ziheng; Sun, Wangyu; Lobet, Michaël; Engheta, Nader; Liberal Olleta, Íñigo
; Li, Yue (Springer Nature, 2022)
Artículo / Artikulua 
Near-zero-index (NZI) media have been theoretically identified as media where electromagnetic radiations behave like ideal electromagnetic fluids. Within NZI media, the electromagnetic power flow obeys equations similar ... -
Dispersion coding of ENZ media via multiple photonic dopants
Zhou, Ziheng; Li, Hao; Sun, Wangyu; He, Yijing; Liberal Olleta, Íñigo ; Engheta, Nader; Feng, Zhenghe; Li, Yue (Springer Nature, 2022)
Artículo / Artikulua
Epsilon-near-zero (ENZ) media are opening up exciting opportunities to observe exotic wave phenomena. In this work, we demonstrate that the ENZ medium comprising multiple dielectric photonic dopants would yield a comb-like ... -
Experimental demonstration of deeply subwavelength dielectric sensing with epsilon-near-zero (ENZ) waveguides
Beruete Díaz, Miguel ; Engheta, Nader; Pacheco-Peña, Víctor (American Institute of Physics, 2022)
Artículo / Artikulua
In this Letter, an all metallic sensor based on ε-near-zero (ENZ) metamaterials is studied both numerically and experimentally when working at microwave frequencies. To emulate an ENZ medium, a sensor is made by using a ... -
Geometry-independent antenna based on Epsilon-near-zero medium
Li, Hao; Zhou, Ziheng; He, Yijing; Sun, Wangyu; Li, Yue; Liberal Olleta, Íñigo ; Engheta, Nader (Springer Nature, 2022)
Artículo / Artikulua
It is well known that electromagnetic radiation from radiating elements (e.g., antennas, apertures, etc.) shows dependence on the element’s geometry shape in terms of operating frequencies. This basic principle is ... -
Momentum considerations inside near-zero index materials
Lobet, Michaël; Liberal Olleta, Íñigo ; Vertchenko, Larissa; Lavrinenko, Andrei V.; Engheta, Nader; Mazur, Eric (Springer Nature, 2022)
Artículo / Artikulua
Near-zero index (NZI) materials, i.e., materials having a phase refractive index close to zero, are known to enhance or inhibit light-matter interactions. Most theoretical derivations of fundamental radiative processes ... -
Near-zero-index media as electromagnetic ideal fluids
Liberal Olleta, Íñigo ; Lobet, Michaël; Li, Yue; Engheta, Nader (National Academy of Sciences, 2020)
Artículo / Artikulua
Near-zero-index (NZI) supercoupling, the transmission of electromagnetic waves inside a waveguide irrespective of its shape, is a counterintuitive wave effect that finds applications in optical interconnects and engineering ... -
Nonlinear metamaterial absorbers enabled by photonic doping of epsilon-near-zero metastructures
Nahvi, Ehsan; Liberal Olleta, Íñigo ; Engheta, Nader (American Physical Society, 2020)
Artículo / Artikulua
We theoretically demonstrate an approach for designing absorbers with strongly intensity-dependent absorption. The proposed absorbers consist of a spacer layer between a top resistive sheet and an underlying metallic ... -
On the performance of an ENZ-based sensor using transmission line theory and effective medium approach
Pacheco-Peña, Víctor ; Beruete Díaz, Miguel ; Rodríguez Ulibarri, Pablo ; Engheta, Nader (IOP Publishing, 2019)
Artículo / Artikulua
In this paper we perform an in-depth theoretical studyofa sensing platform based on epsilon-near- zero (ENZ) metamaterials. The structure proposed for sensing is a narrow metallic waveguide channel. An equivalent circuit ... -
Soft surfaces and enhanced nonlinearity enabled via epsilon-near-zero media doped with zero-area perfect electric conductor inclusions
Nahvi, Ehsan; Liberal Olleta, Íñigo ; Engheta, Nader (Optical Society of America, 2020)
Artículo / Artikulua
Introducing a dielectric inclusion inside an epsilon-near-zero (ENZ) host has been shown to dramatically affect the effective permeability of the host for a TM-polarized incident wave, a concept coined as photonic doping ... -
Structural dispersion-based reduction of loss in epsilon-near-zero and surface plasmon polariton waves
Li, Yue; Liberal Olleta, Íñigo ; Engheta, Nader (American Association for the Advancement of Science, 2019)
Artículo / Artikulua
The field of plasmonics has substantially affected the study of light-matter interactions at the subwavelength scale. However, dissipation losses still remain an inevitable obstacle in the development of plasmonic-based ... -
Substrate-integrated photonic doping for near-zero-index devices
Zhou, Ziheng; Li, Yue; Li, Hao; Sun, Wangyu; Liberal Olleta, Íñigo ; Engheta, Nader (Nature Research, 2019)
Artículo / Artikulua
Near-zero-index (NZI) media, a medium with near zero permittivity and/or permeability, exhibits unique wave phenomena and exciting potential for multiple applications. However, previous proof-of-concept realizations of NZI ...
