Zobrazeno 1 - 10
of 113
pro vyhledávání: '"Sigalas, M. M."'
Publikováno v:
Applied Physics Letters vol. 74, 3933 (1999)
Photonic crystals of close-packed arrays of air spheres in a dielectric background of titania have been fabricated with a novel ceramic technique. Unlike previous methods, ordering of the spheres and the formation of the titania network are performed
Externí odkaz:
http://arxiv.org/abs/2111.04905
Autor:
Psiachos, D., Sigalas, M. M.
Publikováno v:
Phys. Rev. Applied 15, 014022 (2021)
We investigate the effect of small spatiotemporal modulations in subwavelength-dimensioned phononic crystals with large band gaps, on the frequency spectrum for elastic waves polarized in the plane of periodicity. When the radius of cylinders periodi
Externí odkaz:
http://arxiv.org/abs/2008.11597
Autor:
Psiachos, D., Sigalas, M. M.
Publikováno v:
Phys. Rev. B 99, 184110 (2019)
We investigate elastic-wave propagation in a spatially-dispersive multilayered, totally passive metamaterial system. At oblique incidence a longitudinal (acoustic) wave can convert to transverse in the solid material comprising the layers, but when t
Externí odkaz:
http://arxiv.org/abs/1901.02340
Autor:
Psiachos, D., Sigalas, M. M.
Publikováno v:
Journal of Applied Physics v.123 p.245109 (2018)
Using transfer-matrix methods, we investigate the response of a multilayered metamaterial system containing defects to an incident acoustic plane wave at normal or oblique incidence. The transmission response is composed of pass-bands with oscillator
Externí odkaz:
http://arxiv.org/abs/1710.09816
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By using two ab initio numerical methods we study the effects that disorder has on the spectral gaps and on wave localization in two-dimensional photonic band gap materials. We find that there are basically two different responses depending on the la
Externí odkaz:
http://arxiv.org/abs/cond-mat/0002101
The probability distribution of the conductance Pc(g) at the Anderson critical point is calculated. It is find that Pc(g) has a dip at small g in agreement with epsilon expansion results. The Pc(g) for the 3d system is quite different from the 2d qua
Externí odkaz:
http://arxiv.org/abs/cond-mat/9807410
The ideas of the linear combination of atomic orbitals (LCAO) method, well known from the study of electrons, is extended to the classical wave case. The Mie resonances of the isolated scatterer in the classical wave case, are analogous to the locali
Externí odkaz:
http://arxiv.org/abs/cond-mat/9803391
Publikováno v:
Journal of Applied Physics; 2/21/2020, Vol. 127 Issue 7, p1-11, 11p, 4 Diagrams, 9 Charts, 6 Graphs
Publikováno v:
Bulletin of the Geological Society of Greece; 2023 Special Issue, p1-4, 4p