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(a) Optical photograph of the PC delay line and (b) scanning electron micrograph of the PC region.
Electrical measurement of the transmission of guided elastic waves with (solid curve) and without the phononic crystal (dashed curve).
Optical measurement of the transmission trough a PC at (a) 804 MHz and (b) 1120 MHz. (c) Profile of the amplitude in and above the band gap integrated along y and fit of the attenuation in the PC.
Band structure of the PC calculated by FEM with (a) the dominant polarization of each modes and (b) deaf modes. (c) Transmission calculated by FEM and electrical measurements.
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