Listar Artículos de revista DIEE - IEES Aldizkari artikuluak por autor "Engheta, Nader"
Mostrando ítems 1-7 de 7
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Experimental realization of an epsilon-near-zero graded-index metalens at terahertz frequencies
Pacheco-Peña, Víctor
; Engheta, Nader; Kuznetsov, Sergei A.; Gentselev, Alexandr; Beruete Díaz, Miguel (American Physical Society, 2017)
Artículo / Artikulua 
The terahertz band has been historically hindered by the lack of efficient generators and detectors, but a series of recent breakthroughs have helped to effectively close the “terahertz gap.” A rapid development of terahertz ... -
Geometry-invariant resonant cavities
Liberal Olleta, Íñigo ; Mahmoud, A. M.; Engheta, Nader (Springer Nature, 2016)
Artículo / Artikulua
Resonant cavities are one of the basic building blocks in various disciplines of science and technology, with numerous applications ranging from abstract theoretical modelling to everyday life devices. The eigenfrequencies ... -
Lensing system and Fourier transformation using epsilon-near-zero metamaterials
Navarro Cía, Miguel ; Beruete Díaz, Miguel ; Sorolla Ayza, Mario ; Engheta, Nader (American Physical Society, 2012)
Artículo / Artikulua
Metamaterials and metastructures with effective relative permittivity near zero exhibit unusual wave properties such as uniform phase distributions across such domains. Here we discuss the possibility of using ε-near-zero ... -
Manipulating thermal emission with spatially static fluctuating fields in arbitrarily shaped epsilon-near-zero bodies
Liberal Olleta, Íñigo ; Engheta, Nader (National Academy of Sciences, 2018)
Artículo / Artikulua
The control and manipulation of thermal fields is a key scientific andtechnological challenge, usually addressed with nanophotonic struc-tures with a carefully designed geometry. Here, we theoreticallyinvestigate a different ... -
Mechanical 144GHz beam steering with all-metallic epsilon-near-zero lens antenna
Pacheco-Peña, Víctor ; Torres Landívar, Víctor ; Orazbayev, Bakhtiyar ; Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Sorolla Ayza, Mario ; Engheta, Nader (AIP Publishing, 2014)
Artículo / Artikulua
An all-metallic steerable beam antenna composed of an ε-near-zero (ENZ) metamaterial lens is experimentally demonstrated at 144 GHz (λ0 = 2.083 mm). The ENZ lens is realized by an array of narrow hollow rectangular waveguides ... -
Terahertz epsilon-near-zero graded-index lens
Torres Landívar, Víctor; Pacheco-Peña, Víctor ; Rodríguez Ulibarri, Pablo ; Navarro Cía, Miguel ; Beruete Díaz, Miguel ; Sorolla Ayza, Mario ; Engheta, Nader (Optical Society of America, 2013)
Artículo / Artikulua
An epsilon-near-zero graded-index converging lens with planar faces is proposed and analyzed. Each perfectly-electric conducting (PEC) waveguide comprising the lens operates slightly above its cut-off frequency and has ... -
ε-near-zero (ENZ) graded index quasi-optical devices: steering and splitting millimeter waves
Pacheco-Peña, Víctor ; Torres Landívar, Víctor ; Beruete Díaz, Miguel ; Navarro Cía, Miguel ; Engheta, Nader (IOP Publishing, 2014)
Artículo / Artikulua
Graded index ε near-zero (GRIN-ENZ) quasi-optical components such as beam steerers and power splitters are designed, simulated and analyzed. The GRIN-ENZ medium is realized using stacked narrow hollow waveguides whose ...
