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Non-radiative complete surface acoustic wave bandgap for finite-depth holey phononic crystal in lithium niobate

Yudistira, Didit ; Pennec, Yan ; Djafari Rouhani, Bahram ; Dupont, Samuel ; Laude, Vincent

Applied Physics Letters, 06 February 2012, Vol.100(6) [Periódico revisado por pares]

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  • Título:
    Non-radiative complete surface acoustic wave bandgap for finite-depth holey phononic crystal in lithium niobate
  • Autor: Yudistira, Didit ; Pennec, Yan ; Djafari Rouhani, Bahram ; Dupont, Samuel ; Laude, Vincent
  • Assuntos: Structural, Mechanical, Optical, And Thermodynamic Properties Of Advanced Materials
  • É parte de: Applied Physics Letters, 06 February 2012, Vol.100(6)
  • Descrição: We demonstrate the existence of non-radiative complete surface acoustic wave (SAW) bandgaps for two-dimensional piezoelectric phononic crystals of holes. Holes of finite depth in a semi-infinite LiNbO 3 substrate are specifically considered. SAW bandgaps are determined from the band structure calculated with a three-dimensional finite element method taking into account material anisotropy and piezoelectricity. The effect of hole geometry on the bandgaps has been investigated. It is further found that the complete band gap does not close for moderately conical holes.
  • Idioma: Inglês

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