Zobrazeno 1 - 10
of 87
pro vyhledávání: '"Pitilakis, Alexandros"'
Autor:
Mekikis, Prodromos-Vasileios, Tyrovolas, Dimitrios, Tegos, Sotiris, Papadopoulos, Alexandros, Pitilakis, Alexandros, Ioannidis, Sotiris, Tsiolaridou, Ageliki, Diamantoulakis, Panagiotis, Kantartzis, Nikolaos, Karagiannidis, George K., Liaskos, Christos
Reconfigurable intelligent surfaces (RISs) are artificial planar structures able to offer a unique way of manipulating propagated wireless signals. Commonly composed of a number of reconfigurable passive cell components and basic electronic circuits,
Externí odkaz:
http://arxiv.org/abs/2211.14882
Autor:
Varvari, Anna A.1 (AUTHOR) avarvari@ece.auth.gr, Pitilakis, Alexandros1 (AUTHOR) alexpiti@ece.auth.gr, Karatzidis, Dimitrios I.1 (AUTHOR), Kantartzis, Nikolaos V.1 (AUTHOR)
Publikováno v:
Sensors (14248220). Sep2024, Vol. 24 Issue 18, p6104. 15p.
Autor:
Taghvaee, Hamidreza, Pitilakis, Alexandros, Tsilipakos, Odysseas, Tasolamprou, Anna C., Kantartzis, Nikolaos V., Kafesaki, Maria, Cabellos-Aparicio, Albert, Alarcon, Eduard, Abadal, Sergi
The next generation of wireless networks is expected to tap into the terahertz (0.1--10 THz) band to satisfy the extreme latency and bandwidth density requirements of future applications. However, the development of systems in this band is challengin
Externí odkaz:
http://arxiv.org/abs/2203.10298
A non-perturbative model for graphene optical nonlinearity is developed for the study of ultrafast pulse propagation along a monolayer, as in the case of graphene-comprising nanophotonic integrated waveguides. This graphene `hot electron' model (GHEM
Externí odkaz:
http://arxiv.org/abs/2203.09373
Autor:
Chatzidimitriou, Dimitrios, Pitilakis, Alexandros, Yioultsis, Traianos, Kriezis, Emmanouil E.
Publikováno v:
Phys. Rev. A 103, 053503 (2021)
We study the breaking of reciprocity in non-Hermitian coupled photonic waveguides by the simultaneous action of the nonlinear effect of saturable absorption, and the presence of exceptional points. The nonlinear response of such a system is studied i
Externí odkaz:
http://arxiv.org/abs/2102.07483
Autor:
Pitilakis, Alexandros, Chatzidimitriou, Dimitrios, Yioultsis, Traianos V., Kriezis, Emmanouil E.
Publikováno v:
IEEE Journal of Quantum Electronics, vol. 57, no. 3, pp. 1-10, art. no. 8400210, June 2021
We present the study of a proof-of-concept integrated device that can be used as a nonlinear broadband isolator. The device is based on the asymmetric loading of a highly-confining silicon-slot photonic coupler with graphene layers, whose ultrafast a
Externí odkaz:
http://arxiv.org/abs/2101.10210
Autor:
Taghvaee, Hamidreza, Abadal, Sergi, Pitilakis, Alexandros, Tsilipakos, Odysseas, Tasolamprou, Anna, Liaskos, Christos K, Kafesaki, Maria, Kantartzis, Nikolaos V., Cabellos-Aparicio, Albert, Alarcón, Eduard
Programmable metasurfaces have garnered significant attention as they confer unprecedented control over the electromagnetic response of any surface. Such feature has given rise to novel design paradigms such as Software-Defined Metamaterials (SDM) an
Externí odkaz:
http://arxiv.org/abs/2004.06917
Autor:
Pitilakis, Alexandros, Tsilipakos, Odysseas, Liu, Fu, Kossifos, Kypros M., Tasolamprou, Anna C., Kwon, Do-Hoon, Mirmoosa, Mohammad Sajjad, Manessis, Dionysios, Kantartzis, Nikolaos V., Liaskos, Christos, Antoniades, Marco A., Georgiou, Julius, Soukoulis, Costas M., Kafesaki, Maria, Tretyakov, Sergei A.
Publikováno v:
IEEE Trans. Antennas Propag., vol. 69, no. 3, pp. 1440-1454, March 2021
In this paper we present the theoretical considerations and the design evolution of a proof-of-concept reconfigurable metasurface, primarily used as a tunable microwave absorber, but also as a wavefront manipulation and polarization conversion device
Externí odkaz:
http://arxiv.org/abs/2003.08654
Autor:
Tasolamprou, Anna C., Pitilakis, Alexandros, Tsilipakos, Odysseas, Liaskos, Christos, Tsiolaridou, Ageliki, Liu, Fu, Wang, Xuchen, Mirmoosa, Mohammad S., Kossifos, Kypros, Georgiou, Julius, Pitsilides, Andreas, Kantartzis, Nikolaos V., Manessis6, Dionysios, Ioannidis, Sotiris, Kenanakis, George, Deligeorgis, George, Economou, Eleftherios N., Tretyakov, Sergei A., Soukoulis, Costas M., Kafesaki, Maria
We present the concept and electromagnetic aspects of HyperSurFaces (HSFs), artificial, ultrathin structures with software controlled electromagnetic properties. The HSFs key unit is the metasurface, a plane with designed subwavelength features whose
Externí odkaz:
http://arxiv.org/abs/1908.01072
Autor:
Tasolamprou, Anna C., Pitilakis, Alexandros, Abadal, Sergi, Tsilipakos, Odysseas, Timoneda, Xavier, Taghvaee, Hamidreza, Mirmoosa, Mohammad Sajjad, Liu, Fu, Liaskos, Christos, Tsioliaridou, Ageliki, Ioannidis, Sotiris, Kantartzis, Nikolaos V., Manessis, Dionysios, Georgiou, Julius, Cabellos-Aparicio, Albert, Alarcon, Eduard, Pitsillides, Andreas, Akyildiz, Ian, Tretyakov, Sergei A., Economou, Eleftherios N., Kafesaki, Maria, Soukoulis, Costas M.
Software-defined metasurfaces are electromagnetically ultra-thin, artificial components that can provide engineered and externally controllable functionalities. The control over these functionalities is enabled by the metasurface tunability, which is
Externí odkaz:
http://arxiv.org/abs/1907.02395