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Multiferroic based 2D phononic crystals: band structure and wave propagations

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Figure 1. Unit cell of a square lattice two dimensional phononic crystal (a). Transverse cross-section of a representative 2-D phononic crystal (b) and Brillouin zone of 2-D square lattice PCs (c).
Figure 4. Acoustic lens effect of PC a) Normalized Total Pressure Field (Pa) b) Sound Pressure Level (dB).

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