Zobrazeno 1 - 10
of 41
pro vyhledávání: '"E. N. Economou"'
Autor:
K. Baskourelos, O. Tsilipakos, T. Stefański, S. F. Galata, E. N. Economou, M. Kafesaki, K. L. Tsakmakidis
Publikováno v:
Physical Review Research, Vol 4, Iss 3, p L032011 (2022)
Τhe incumbent technology for bringing light to the nanoscale, the near-field scanning optical microscope, has notoriously small throughput efficiencies of the order of 10^{4} −10^{5}, or less. We report on a broadband, topological, unidirectionall
Externí odkaz:
https://doaj.org/article/3b5798d4f13e4fd997e318a32f020bbb
Autor:
Z. Viskadourakis, E. Tamiolakis, O. Tsilipakos, A. C. Tasolamprou, E. N. Economou, G. Kenanakis
Publikováno v:
Crystals, Vol 11, Iss 9, p 1089 (2021)
The capability of three-dimensional printed cut-wire metasurfaces to harvest energy in frequencies around 2.4 GHz, is studied in this paper. Cut-wire metasurfaces were constructed using the Fused Filament Fabrication technique. In particular, two met
Externí odkaz:
https://doaj.org/article/59ea37fb211b4b1c815ec5e07ddaf9b5
Publikováno v:
Physical Review Research, Vol 3, Iss 1, p 013208 (2021)
We study the transport and spectral properties of a non-Hermitian one-dimensional disordered lattice, the diagonal matrix elements of which are random complex variables taking both positive (loss) and negative (gain) imaginary values: Their distribut
Externí odkaz:
https://doaj.org/article/1c418aae3f3d408a9356c5b044b3f0ce
Publikováno v:
AIP Advances, Vol 4, Iss 12, Pp 124203-124203-18 (2014)
In the present paper we review briefly some of the first works on wave propagation in phononic crystals emphasizing the conditions for the creation of acoustic band-gaps and the role of resonances to the band-gap creation. We show that useful conclus
Externí odkaz:
https://doaj.org/article/1c161391d14a4fabb86f8debade8831d
Autor:
A. C. Tasolamprou, A. D. Koulouklidis, S. Doukas, E. Kyriakou, M. S. Ergoktas, C. Daskalaki, E. N. Economou, C. Kocabas, E. Lidorikis, M. Kafesaki, S. Tzortzakis
Publikováno v:
2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
Autor:
A. C. Tasolamprou, E. Skoulas, G. Perrakis, M. Vlahou, Z. Viskadourakis, E. N. Economou, M. Kafesaki, G. Kenanakis, E. Stratakis
Publikováno v:
2022 Sixteenth International Congress on Artificial Materials for Novel Wave Phenomena (Metamaterials).
Publikováno v:
Physical Review B. 106
Publikováno v:
Frontiers in Optics + Laser Science 2022 (FIO, LS).
We provide an analytical description of the counterintuitive phenomenon of non-Hermitian jumps in optical lattices with strong uncorrelated disorder. Our approach is general and is also applied to extensions of the Hatano-Nelson model.
Autor:
G. Kenanakis, K. C. Vasilopoulos, Z. Viskadourakis, N.-M. Barkoula, S. H. Anastasiadis, M. Kafesaki, E. N. Economou, C. M. Soukoulis
Publikováno v:
Applied Physics A. 122
Publikováno v:
AIP Conference Proceedings.
In this paper we present a study of the THz electromagnetic properties of anisotropic eutectic metamaterials of cylindrical polaritonic LiF rods embedded in NaCl host and of polaritonic lammelas of NaF layers in BaF2. It is shown that such systems ca