• Design and characterization of terahertz CORPS beam forming networks 

      Biurrun Quel, Carlos Upna Orcid; Haddad, Thomas; Sievert, Benedikt; Kress, Robin; Weimann, Nils; Erni, Daniel; Rennings, Andreas; Stöhr, Andreas; Teniente Vallinas, Jorge Upna Orcid; Río Bocio, Carlos del Upna Orcid (Springer, 2023)   Artículo / Artikulua  OpenAccess
      This work reviews the design and applicability of beam-forming networks based on Coherently Radiating Periodic Structures (CORPS-BFN) at Terahertz (THz) frequency bands. These versatile networks offer two operation modes: ...
    • 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 ...
    • 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 ...
    • Metageometries for polycyclic aromatic hydrocarbons detection at THz range in food systems 

      Jáuregui López, Irati Upna Orcid; Insausti Barrenetxea, Kizkitza Upna Orcid; Beriain Apesteguía, María José Upna Orcid; Beruete Díaz, Miguel Upna Orcid (IEEE, 2021)   Artículo / Artikulua  OpenAccess
      Polycyclic aromatic hydrocarbons, when present in food systems, have been shown to have a detrimental effect on human health, producing carcinogenic elements. So, the implementation of processes for their detection and ...
    • Super-oscillatory metalens at terahertz for enhanced focusing with reduced side lobes 

      Legaria Lerga, Santiago; Pacheco-Peña, Víctor Upna Orcid; Beruete Díaz, Miguel Upna Orcid (MDPI, 2018)   Artículo / Artikulua  OpenAccess
      In this paper, we design and numerically demonstrate an ultra-thin super-oscillatory metalens with a resolution below the diffraction limit. The zones of the lens are implemented using metasurface concepts with hexagonal ...
    • 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 ...
    • Tripod-loop metasurfaces for terahertz-sensing applications: a comparison 

      Jáuregui López, Irati Upna Orcid; Orazbayev, Bakhtiyar Upna Orcid; Pacheco-Peña, Víctor Upna Orcid; Beruete Díaz, Miguel Upna Orcid (MDPI, 2020)   Artículo / Artikulua  OpenAccess
      The high electric field intensity achieved on the surface of sensors based on metasurfaces (metasensors) makes them an excellent alternative for sensing applications where the volume of the sample to be identified is tiny ...

      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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