Title :
Temperature effect on the bandgaps of surface and bulk acoustic waves in two-dimensional phononic crystals
Author :
Huang, Zi-Gui ; Wu, Tsung-Tsong
Author_Institution :
Inst. of Appl. Mechanics, Nat. Taiwan Univ., Taipei, Taiwan
fDate :
3/1/2005 12:00:00 AM
Abstract :
In this paper, we analyzed the temperature effect on two-dimensional phononic crystals. Bandgap variations of both of the bulk modes and surface modes due to changing of temperature in an air/quartz band structure from 0 to 50/spl deg/C were calculated and discussed. The results show that the elastic bandgaps can be enlarged or reduced by adjusting the temperature of the band structure. The temperature effects potentially can be used for fine-tuning of the phononic bandgap frequency.
Keywords :
energy gap; phonons; surface acoustic waves; 0 to 50 degC; air-quartz band structure; bulk acoustic waves; bulk modes; elastic bandgaps; phononic bandgap frequency; surface acoustic waves; surface modes; temperature effect; two-dimensional phononic crystals; Acoustic propagation; Acoustic waves; Anisotropic magnetoresistance; Crystals; Ferroelectric materials; Periodic structures; Photonic band gap; Polarization; Surface acoustic waves; Temperature;
Journal_Title :
Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on
DOI :
10.1109/TUFFC.2005.1417258
