• Experimental realization of an epsilon-near-zero graded-index metalens at terahertz frequencies 

      Pacheco-Peña, Víctor Upna Orcid; Engheta, Nader; Kuznetsov, Sergei A.; Gentselev, Alexandr; Beruete Díaz, Miguel Upna Orcid (American Physical Society, 2017)   Artículo / Artikulua  OpenAccess
      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 ...
    • Extraordinary THz transmission with a small beam spot: the leaky wave mechanism 

      Navarro Cía, Miguel Upna Orcid; Pacheco-Peña, Víctor Upna Orcid; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna Orcid (Wiley, 2018)   Artículo / Artikulua  OpenAccess
      The discovery of extraordinary optical transmission (EOT) through patterned metallic foils in the late 1990s was decisive for the development of plasmonics and cleared the path to employ small apertures for a variety of ...
    • Far-field and near-field physics of extraordinary THz transmitting hole-array antennas 

      Camacho, Miguel; Boix, Rafael R.; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna Orcid; Navarro Cía, Miguel Upna Orcid (IEEE, 2019)   Artículo / Artikulua  OpenAccess
      Despite three decades of effort, predicting accurately extraordinary transmission through subwavelength hole arrays has proven challenging. The lack of quantitative design and modeling capability to take into account ...
    • Labyrinth metasurface absorber for ultra-high-sensitivity terahertz thin film sensing 

      Jáuregui López, Irati Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Urrutia Azcona, Aitor Upna Orcid; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna Orcid (Wiley, 2018)   Artículo / Artikulua  OpenAccess
      In this work, a labyrinth metasurface sensor operating at the low‐frequency edge of the THz band is presented. Its intricate shape leads to a high electric field confinement on the surface of the structure, resulting in ...
    • Labyrinth metasurface for biosensing applications: numerical study on the new paradigm of metageometries 

      Jáuregui López, Irati Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Kuznetsov, Sergei A.; Quemada Mayoral, Carlos Upna Orcid; Beruete Díaz, Miguel Upna Orcid (MDPI, 2019)   Artículo / Artikulua  OpenAccess
      The use of metasurfaces operating in the terahertz regime as biosensor devices has attracted increased interest in recent years due to their enhanced sensitivity and more accurate detection capability. Typical designs are ...
    • THz sensing with anomalous extraordinary optical transmission hole arrays 

      Jáuregui López, Irati Upna Orcid; Rodríguez Ulibarri, Pablo Upna Orcid; Kuznetsov, Sergei A.; Nikolaev, Nazar A.; Beruete Díaz, Miguel Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      Subwavelength hole array (HA) metasurfaces support the so-called extraordinary optical transmission (EOT) resonance that has already been exploited for sensing. In this work, we demonstrate the superior performance of a ...
    • Ultrathin and high-efficiency Pancharatnam-Berry phase metalens for millimeter waves 

      Moreno-Peñarrubia, Alexia; Teniente Vallinas, Jorge Upna Orcid; Kuznetsov, Sergei A.; Orazbayev, Bakhtiyar Upna Orcid; Beruete Díaz, Miguel Upna Orcid (AIP Publishing, 2021)   Artículo / Artikulua  OpenAccess
      Applying the Pancharatnam–Berry (PB) principle to half-wave plate (HWP) metasurfaces allows the manipulation of wavefronts along with the conversion of the handedness of circularly polarized incident waves by simply rotating ...
    • Ultrathin sub-terahertz half-wave plate with high conversion efficiency based on zigzag metasurface 

      Moreno-Peñarrubia, Alexia; Kuznetsov, Sergei A.; Beruete Díaz, Miguel Upna Orcid (IEEE, 2020)   Artículo / Artikulua  OpenAccess
      In this communication, an ultrathin transmissive half-wave plate (HWP) based on a bi-layered zigzag metasurface operating at the lower frequency edge of the terahertz (THz) spectrum is numerically and experimentally studied. ...

      El Repositorio ha recibido la ayuda de la Fundación Española para la Ciencia y la Tecnología para la realización de actividades en el ámbito del fomento de la investigación científica de excelencia, en la Línea 2. Repositorios institucionales (convocatoria 2020-2021).
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