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Temperature effect on the bandgaps of surface and bulk acoustic waves in two-dimensional phononic crystals

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2 Author(s)
Huang, Zi-Gui ; Inst. of Appl. Mechanics, Nat. Taiwan Univ., Taipei, Taiwan ; Wu, Tsung-Tsong

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.

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Ultrasonics, Ferroelectrics, and Frequency Control, IEEE Transactions on  (Volume:52 ,  Issue: 3 )