Open AccessStudy on band gap properties of two-dimensional 8-fold quasi-periodic phononic crystals
Author(s) -
Ali Chen,
Tong-Li Liang,
YueSheng Wang
Publication year - 2014
Publication title -
wuli xuebao
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.199
H-Index - 47
ISSN - 1000-3290
DOI - 10.7498/aps.63.036101
Subject(s) - supercell , materials science , finite element method , band gap , spectral line , transmission (telecommunications) , dispersion (optics) , superlattice , condensed matter physics , optics , acoustic metamaterials , molecular physics , physics , telecommunications , quantum mechanics , thermodynamics , thunderstorm , meteorology , computer science
For the two-dimensional (2D) 8-fold solid-fluid quasi-periodic photonic nanocrystal (QPNC) (steel-water system), the transmission spectra of the systems with different sizes are obtained by experimentation. At the same time, combined with the supercell method, the finite element method (FEM) is used to calculate the dispersion curves and transmission spectrum of the system. The transmission spectra obtained by means of these two methods are in good agreement with each other, but the band gaps appearing in the transmission spectrum calculated using the FEM are clearer than those obtained via experimentation. The dispersion curves of the 2D 8-fold solid-fluid QPNC can be well studied by using the supercell which only contains its center puzzle.