Journal of Physics D Applied Physics · 2002 · 63 citations · 32 references
Natural SciencesMaterials SciencePhysicsAcousticsCrystal StructureMaterials PhysicsAcoustic MaterialsAcoustic MetamaterialsCrystal LatticeCrystal SystemsPeriodic Structure AnalysisStructural AcousticsAcoustic Band GapsAcoustic Metamaterial DesignBand GapBand Gap TuningBand Gaps In Periodic StructuresPhononic CrystalsTwo-dimensional ArraysTwo-dimensional Materials
Effects of orientations of square rods on the acoustic band gaps in two-dimensional periodic arrays of rigid solid rods embedded in air are studied. The acoustic band gaps will be opened and enlarged greatly by increasing the rotation angle. For any filling fraction F, the maximum acoustic band gaps appear at the same rotation angle θ = 45° for the cases of F⩽0.50, otherwise they will appear at different limit values θc and the largest band gap is achieved at a filling fraction of about F = 0.85. This gap-tuning effect will be stronger with increase in filling fraction. This tuning mechanism of band gap suggests a new way to design band gaps of two-dimensional phononic crystals.
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Locally Resonant Sonic Materials
Zhengyou Liu, Xixiang Zhang, Yiwei Mao et al. · Science · 2000 · 5.3K citations
Band structure of elastic waves in two dimensional systems
M. M. Sigalas, E. N. Economou · Solid State Communications · 1993 · 879 citations