Title :
Tunable Wave Dispersion in 3D Woodpile Mechanical Metamaterials
Author :
Eunho Kim ; Yong Han ; Kim, Noel ; Jinkyu Yang
Author_Institution :
William E. Boeing Dept. of Aeronaut. & Astronaut., Univ. of Washington, Seattle, WA, USA
Abstract :
We numerically and experimentally investigate the nonlinear wave dispersion in 3D woodpile periodic structures consisting of slender cylindrical rods. The slender rods have low frequency resonance modes that are coupled with the propagating wave. Depending on the coupling of local modes, the propagating waveform in woodpile can change significantly. Also, the wave dispersion in temporal and spatial domain depends significantly on the mode coupling. The coupling of the local modes can be tuned by adjusting the architecture of the woodpile.
Keywords :
optical dispersion; optical metamaterials; periodic structures; rods (structures); 3D woodpile mechanical metamaterials; 3D woodpile periodic structures; frequency resonance modes; local modes; nonlinear wave dispersion; propagating wave; slender cylindrical rods; spatial domain; temporal domain; tunable wave dispersion; Couplings; Dispersion; Metamaterials; Periodic structures; Propagation; Three-dimensional displays; Vibrations; metamaterial; periodic woodpile; tunable wave propagation;
Conference_Titel :
Optomechatronic Technologies (ISOT), 2014 International Symposium on
DOI :
10.1109/ISOT.2014.10
