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Title: Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure

Abstract

In this work, we numerically investigate for the first time the elastodynamic behavior of a three dimensional layer-by-layer rod structure, which is easy to fabricate and has already proved to be very efficient as a photonic crystal. The Finite Difference Time Domain method was used for the numerical calculations. For the rods, several materials were examined and the effects of all the geometric parameters of the structure were also numerically investigated. Additionally, two modifications of the structure were included in our calculations. The results obtained here (for certain geometric parameters), exhibiting a high ratio of longitudinal over transverse sound velocity and therefore a close approach to ideal pentamode behavior over a frequency range, clearly show that the layer-by-layer rod structure, besides being an efficient photonic crystal, is a very serious contender as an elastodynamic metamaterial.

Authors:
;  [1];  [2]
  1. Department of Materials Science, University of Patras, 26504 Patras (Greece)
  2. Institute of Electronic Structure and Laser (IESL), Foundation for Research and Technology—Hellas (FORTH), P.O. Box 1385, Heraklion GR-71110, Greece and Department of Physics, University of Crete, Heraklion GR-71003 (Greece)
Publication Date:
OSTI Identifier:
22305741
Resource Type:
Journal Article
Journal Name:
Journal of Applied Physics
Additional Journal Information:
Journal Volume: 116; Journal Issue: 13; Other Information: (c) 2014 AIP Publishing LLC; Country of input: International Atomic Energy Agency (IAEA); Journal ID: ISSN 0021-8979
Country of Publication:
United States
Language:
English
Subject:
75 CONDENSED MATTER PHYSICS, SUPERCONDUCTIVITY AND SUPERFLUIDITY; CRYSTALS; FREQUENCY RANGE; LAYERS; MODIFICATIONS; SOUND WAVES; THREE-DIMENSIONAL CALCULATIONS

Citation Formats

Aravantinos-Zafiris, N., Sigalas, M. M., and Economou, E. N. Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure. United States: N. p., 2014. Web. doi:10.1063/1.4896766.
Aravantinos-Zafiris, N., Sigalas, M. M., & Economou, E. N. Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure. United States. https://doi.org/10.1063/1.4896766
Aravantinos-Zafiris, N., Sigalas, M. M., and Economou, E. N. 2014. "Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure". United States. https://doi.org/10.1063/1.4896766.
@article{osti_22305741,
title = {Elastodynamic behavior of the three dimensional layer-by-layer metamaterial structure},
author = {Aravantinos-Zafiris, N. and Sigalas, M. M. and Economou, E. N.},
abstractNote = {In this work, we numerically investigate for the first time the elastodynamic behavior of a three dimensional layer-by-layer rod structure, which is easy to fabricate and has already proved to be very efficient as a photonic crystal. The Finite Difference Time Domain method was used for the numerical calculations. For the rods, several materials were examined and the effects of all the geometric parameters of the structure were also numerically investigated. Additionally, two modifications of the structure were included in our calculations. The results obtained here (for certain geometric parameters), exhibiting a high ratio of longitudinal over transverse sound velocity and therefore a close approach to ideal pentamode behavior over a frequency range, clearly show that the layer-by-layer rod structure, besides being an efficient photonic crystal, is a very serious contender as an elastodynamic metamaterial.},
doi = {10.1063/1.4896766},
url = {https://www.osti.gov/biblio/22305741}, journal = {Journal of Applied Physics},
issn = {0021-8979},
number = 13,
volume = 116,
place = {United States},
year = {Tue Oct 07 00:00:00 EDT 2014},
month = {Tue Oct 07 00:00:00 EDT 2014}
}