62 citations · 197 across the 14 of their papers we have counts for
14 papers
Band-gap tuning in 2D spatiotemporal phononic crystals
D. Psiachos, M. M. Sigalas
We investigate the effect of small spatiotemporal modulations in subwavelength-dimensioned phononic crystals with large band gaps, on the frequency spectrum for elastic waves polar…
Tailoring one-dimensional layered metamaterials to achieve unidirectional transmission and reflection
D. Psiachos, M. M. Sigalas
We investigate elastic-wave propagation in a spatially-dispersive multilayered, totally passive metamaterial system. At oblique incidence a longitudinal (acoustic) wave can convert…
Acoustic response in a a one-dimensional layered pseudo-Hermitian metamaterial containing defects
D. Psiachos, M. M. Sigalas
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 incidenc…
Comment on "Ab initio calculations of the lattice parameter and elastic stiffness coefficients of bcc Fe with solutes" Comp. Mat. Sci. v.126 pp.503-513 (2017)
D. Psiachos
In a recent paper, the authors propose to separately calculate the volumetric and chemical contributions to the elastic stiffness coefficients of systems containing solutes, as it…
Comment on the paper "Quasi-particle approach for lattice Hamiltonians with large coordination numbers" by P. Navez, F. Queisser and R. Schützhold - J. Phys. A: Math. Theor. 47 225004 (2014)
D. Psiachos
This comment regards a central aspect of the referred-to paper, the issue of convergence of the large coordination-number expansion. Perturbation expansions of expressions containi…
Short-Lived Electron Transfer in Donor-Bridge-Acceptor Systems
D. Psiachos
We investigate time-dependent electron transfer (ET) in benchmark donor-bridge-acceptor systems. For the small bridge sizes studied, we obtain results far different from the pertur…