Journal
PHYSICAL REVIEW LETTERS
Volume 84, Issue 19, Pages 4349-4352Publisher
AMERICAN PHYSICAL SOC
DOI: 10.1103/PhysRevLett.84.4349
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We study elastic band gaps in nonhomogeneous periodic finite media. we study elastic band gaps In nonhomogeneous periodic finite media. The finite-difference time-domain method is used for the first time in the field of elastic band-gap materials. It is used to interpret experimental data for two-dimensional systems consisting of cylinders of fluids (Hg, air, and oil) inserted periodically in a finite slab of aluminum host. The method provides good convergence, can be applied to realistic finite composite slabs, even to composites with a huge contrast in the elastic parameters of their components, and describes well the experiments.
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