An elastic metamaterial with simultaneously negative mass density and bulk modulus
Abstract
In this letter, an elastic metamaterial which exhibits simultaneously negative effective mass density and bulk modulus is presented with a single unit structure made of solid materials. The double-negative properties are achieved through a chiral microstructure that is capable of producing simultaneous translational and rotational resonances. The negative effective mass density and effective bulk modulus are numerically determined and confirmed by the analysis of wave propagation. The left-handed wave propagation property of this metamaterial is demonstrated by the negative refraction of acoustic waves.
Document Details
- Document Type
- Pub Defense Publication
- Publication Date
- Jun 20, 2011
- Source ID
- 10.1063/1.3597651
Entities
People
- Chintech Sun
- G. K. Hu
- Guoliang Huang
- X. N. Liu
Organizations
- Air Force Office of Scientific Research
- Beijing Institute of Technology
- National Natural Science Foundation of China
- Purdue University
- University of Arkansas at Little Rock