Now showing items 1-4 of 4

    • A graphene based plasmonic antenna design for communication in the THz regime 

      Suessmeier, Christoph; Schaeffer, Stephan; Abadal Cavallé, Sergi; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Stock, Daniel; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference lecture
      Restricted access - publisher's policy
      We show the first THz emission of a graphene based plasmonic antenna structure. Furthermore we present the minimum material requirements for an operational graphene antenna in terms of chemical potential µc and relaxation time t.
    • Material-dependencies of the THz emission from plasmonic graphene-based photoconductive antenna structures 

      Suessmeier, Christoph; Abadal Cavallé, Sergi; Stock, Daniel; Schaeffer, Stephan; Alarcón Cot, Eduardo José; Hosseininejad, Seyed Ehsan; Wigger, Anna K.; Wagner, Stefan; Cabellos Aparicio, Alberto; Lemme, Max; Bolívar, Peter Haring (Institute of Electrical and Electronics Engineers (IEEE), 2017)
      Conference report
      Restricted access - publisher's policy
      Graphene supports surface plasmon polaritons with comparatively slow propagation velocities in the THz region, which becomes increasingly interesting for future communication technologies. This ability can be used to realize ...
    • Security, reliability and test aspects of the RISC-V ecosystem 

      Abella Ferrer, Jaume; Alcaide Portet, Sergi; Anders, Jens; Bas Jalón, Francisco; Becker, Steffen; De Mulder, Elke; Elhamawy, Nourhan; Gürkaynak, Frank K.; Handschuh, Helena; Hernández Luz, Carles; Hutter, Mike; Kosmidis, Leonidas; Polian, Ilia; Sauer, Matthias; Wagner, Stefan; Regazzoni, Francesco (Institute of Electrical and Electronics Engineers (IEEE), 2021-05)
      Conference lecture
      Open Access
      RISC-V has emerged as a viable solution on academia and industry. However, to use open source hardware for safety-critical applications, we need a deep understanding of the way in which well established mechanisms for ...
    • Software engineering for AI-based systems: A survey 

      Martínez Fernández, Silverio Juan; Bogner, Justus; Franch Gutiérrez, Javier; Oriol Hilari, Marc; Siebert, Julien; Trendowicz, Adam; Vollmer, Anna Maria; Wagner, Stefan (2022-04-01)
      Article
      Open Access
      AI-based systems are software systems with functionalities enabled by at least one AI component (e.g., for image-, speech-recognition, and autonomous driving). AI-based systems are becoming pervasive in society due to ...