• DocumentCode
    691364
  • Title

    Thermal tuning of acoustic transmission enhancement through a phononic crystal slab

  • Author

    Chao-wei Xu ; Fei-yan Cai ; Shu-hong Xie ; Jiang-yu Li ; Hai-rong Zheng

  • Author_Institution
    Key Lab. of Low Dimensional Mater. & Applic. Technol. of Minist. of Educ., Xiangtan Univ., Xiangtan, China
  • fYear
    2013
  • fDate
    25-27 Oct. 2013
  • Firstpage
    1
  • Lastpage
    3
  • Abstract
    This paper describes the thermal tuning of acoustic transmission enhancement through a phononic crystal slab (PCS), which is formed by ferroelectric ceramic Ba0.7Sr0.3TiO3 (BST) slab patterned with periodical array of rectangular gratings on one side. We theoretically investigate the normal incident transmission spectrum of the PCS in the temperature of 35°C and 45°C respectively, which are across Curie temperature (TC). A remarkable transmission peak originating from the excitation of A0 Lamb mode at frequency of 0.37 MHz changes to the frequency of 0.44 MHz over 10°C temperature range, which is due to the high thermal sensitivity of acoustic velocities in BST across TC. The shift of the transmission enhancement enables the proposed PCS promising as a temperature-tuned multi-frequency Lamb wave filter or switch.
  • Keywords
    Curie temperature; acoustic wave transmission; acoustic wave velocity; barium compounds; ferroelectric ceramics; phononic crystals; slabs; strontium compounds; surface acoustic waves; A0 Lamb mode excitation; BST slab; Ba0.7Sr0.3TiO3; Curie temperature; Lamb wave switch; PCS; acoustic transmission enhancement; acoustic velocities; ferroelectric ceramic; frequency 0.37 MHz to 0.44 MHz; multifrequency Lamb wave filter; normal incident transmission spectrum; periodical array; phononic crystal slab; rectangular gratings; temperature 35 degC; temperature 45 degC; thermal sensitivity; thermal tuning; transmission enhancement shift; transmission peak; Acoustic transmission enhancement; Phononic crystal; Thermal tuning;
  • fLanguage
    English
  • Publisher
    ieee
  • Conference_Titel
    Piezoelectricity, Acoustic Waves and Device Applications (SPAWDA), 2013 Symposium on
  • Conference_Location
    Changsha
  • Print_ISBN
    978-1-4799-3289-4
  • Type

    conf

  • DOI
    10.1109/SPAWDA.2013.6841151
  • Filename
    6841151
    • Link To Document
    https://search.isc.ac/dl/search/defaultta.aspx?DTC=49&DC=691364