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A microbar resonator supported by uniform strips (a) and PC strips (b), respectively. A unit cell of the PC strips is shown in (c).
Frequency band structure of acoustic waves in the PC strip.
Total displacement fields of two different bar resonators with the PC strip supports. Operating frequency within (a) and outside (b) the total band gap. Length and thickness of the resonators are fixed at and , respectively.
Variation in the leaky power and stored energy coefficients for the bar resonator as a function of the resonant frequencies varied with the bar width . The insets show the polarization occurring on the attached region between the resonator and the PC strips. Left inset: displacement field projected on the plane. Right inset: displacement in the -direction calculated along the vertical central line of the attached region. The displacement in the -direction is normalized by its maximum value.
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