scholarly journals The two-dimensional phononic crystal band gaps tuned by the symmetry and orientation of the additional rods in the center of unit cell

2012 ◽  
Vol 61 (23) ◽  
pp. 234302
Author(s):  
Hu Jia-Guang ◽  
Xu Wen ◽  
Xiao Yi-Ming ◽  
Zhang Ya-Ya
Keyword(s):  
Phononic Crystal ◽  
Unit Cell ◽  
Band Gaps ◽  
Two Dimensional

Locally resonant surface acoustic wave band gaps in a two-dimensional phononic crystal of pillars on a surface

2010 ◽  
Vol 81 (21) ◽  
Author(s):  
Abdelkrim Khelif ◽  
Younes Achaoui ◽  
Sarah Benchabane ◽  
Vincent Laude ◽  
Boujamaa Aoubiza
Keyword(s):  
Acoustic Wave ◽  
Surface Acoustic Wave ◽  
Phononic Crystal ◽  
Band Gaps ◽  
Wave Band ◽  
Two Dimensional

Large band gaps in two-dimensional phononic crystal composed of periodic cross-boards in air

2012 ◽  
Vol 86 (4) ◽  
pp. 045402 ◽  
Author(s):  
Kun-Peng Yu ◽  
Tian-Ning Chen ◽  
Xiao-Peng Wang ◽  
An-An Zhou
Keyword(s):  
Phononic Crystal ◽  
Band Gaps ◽  
Two Dimensional

Tuning of band gaps for a two-dimensional piezoelectric phononic crystal with a rectangular lattice

2008 ◽  
Vol 25 (1) ◽  
pp. 65-71 ◽  
Author(s):  
Yize Wang ◽  
Fengming Li ◽  
Yuesheng Wang ◽  
Kikuo Kishimoto ◽  
Wenhu Huang
Keyword(s):  
Phononic Crystal ◽  
Band Gaps ◽  
Rectangular Lattice ◽  
Two Dimensional

Frequency characteristics of defect states in a two-dimensional phononic crystal with slit structure

2016 ◽  
Vol 30 (06) ◽  
pp. 1650025 ◽  
Author(s):  
X. P. Wang ◽  
P. Jiang ◽  
T. N. Chen ◽  
K. P. Yu
Keyword(s):  
Band Gap ◽  
Power Transmission ◽  
Phononic Crystal ◽  
Slit Width ◽  
Band Gaps ◽  
Theoretical Research ◽  
Two Dimensional ◽  
Defect States ◽  
Band Frequency ◽  
Practical Applications

In this paper, the defect state and band gap characteristics in a two-dimensional slit structure phononic crystal, consisting of slotted steel tubes embedded in an air matrix, are investigated theoretically and experimentally. Using the finite element method and supercell technique, the dispersion relationships and power transmission spectra of the slit structures are calculated. The vibration modes of the band gap edges are analyzed to clarify the mechanism of the generation of the band gaps. Additionally, the influence of the slit width on the band gaps in slit structure is investigated. The slit width was found to influence the band gaps; this is critical to understand for practical applications. Based on this finding, a method to form defect scatterers by changing the slit width of a single central scatterer, or one row of scatterers, in the perfect PC was developed. Defect bands can be induced by creating defects inside the original complete band gaps. The frequency can then be tuned by changing the slit width of defect scatterers. Meanwhile, the relationship between point defect and line defect is investigated. Finally, we verify the results of theoretical research by experiments. These results will help in fabricating devices such as acoustic filters and waveguides whose band frequency can be modulated.

Sign in / Sign up

Export Citation Format

Share Document