Elastic metamaterials for independent realization of negativity in density and stiffness
Other Condensed Matter
2016-01-14 v1 Materials Science
Abstract
In this paper, we present the realization of an elastic metamaterial allowing independent tuning of negative density and stiffness for elastic waves propagating along a designated direction. In electromagnetic (or acoustic) metamaterials, it is now possible to tune permittivity (bulk modulus) and permeability (density) independently. Apparently, the tuning methods seem to be directly applicable for elastic case, but no realization has yet been made due to the unique tensorial physics of elasticity that makes wave motions coupled in a peculiar way. To realize independent tunability, we developed a single-phased elastic metamaterial supported by theoretical analysis and numerical/experimental validations.
Keywords
Cite
@article{arxiv.1601.03252,
title = {Elastic metamaterials for independent realization of negativity in density and stiffness},
author = {Joo Hwan Oh and Young Eui Kwon and Hyung Jin Lee and Yoon Young Kim},
journal= {arXiv preprint arXiv:1601.03252},
year = {2016}
}