Open AccessEffect of translation group symmetry on phononic band gaps studied by supercell calculation
Author(s) -
Mu Zhong-Fei,
Fugen Wu,
Xin Zhang,
Zhong Hui-Lin
Publication year - 2007
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.56.4694
Subject(s) - acoustic metamaterials , supercell , rod , translational symmetry , materials science , band gap , condensed matter physics , crystal (programming language) , translation (biology) , square lattice , lattice (music) , crystal structure , electronic band structure , physics , crystallography , acoustics , thunderstorm , medicine , biochemistry , chemistry , alternative medicine , pathology , meteorology , computer science , messenger rna , ising model , gene , programming language
The band structure of two kinds of phononic crystals (the square lattice of mercury (water) rods in a water (mercury) host) has been calculated using the plane-wave expansion method based on super cell. The translation group symmetry of phononic crystal is changed by changing the size of adjacent rods. We found that by changing the lengths of sides of adjacent rods one can effectively adjust the phononic band gaps. The present work shows that the translation group symmetry of phononic crystal has an important influence on the formation of its band gaps, and the method based on super cell is an effective method of studying the influence of translation group symmetry of phononic crystal on the formation of phononic band gaps.