期刊
PHYSICAL REVIEW LETTERS
卷 85, 期 19, 页码 4044-4047出版社
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.85.4044
关键词
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It is shown, for the first time, that the transmittivity of wave guides created as rectilinear defects in periodic elastic band-gap materials oscillates as a function of frequency. The results are obtained using the finite difference time domain method for elastic waves propagating in two-dimensional inhomogeneous media. The oscillations of the transmittivity are due to the richness of modes in the elastic systems and, mainly, due to the periodicity of the potential in the direction of the wave propagation. Results are presented for a periodic array of Ph and Ag cylinders inserted in an epoxy host, as well as for Hg cylinders in an Al host.
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