New Acoustics Based on Metamaterials

Introduction.- Gauge Invariance Properties of Acoustic Fields.- Negative Refraction is a Special Case of Coordinates.- Transformation-Unified Theory of Negative Refraction and Acoustical Cloaking.- Three Basic Mechanisms of Sound Propagation in Solids and Fluids.- Revolution in Acoustic Devices by Metamaterial.- Scattering at different Layers of different Parities.-Diffraction Tomography by Negative Inclusions.- Vibration Propagation in Metamaterial Structures.- Seismic Metamaterials.- Phononic Crystals based Crystal Acoustics.- Metamaterials based Acoustic Waveguides .- Metamaterials Acoustic Filters -Application to Communication.- Acoustical Cloaking of Underwater Objects-Submarines.- Acoustic Diodes.- Nonlinear Acoustics based on Metamaterials.- Phononics.- Nonlinear Phononic Crystals-Energy Harvesting.- Fabrication of Nanometamaterials.- Artificial Piezoelectricity.- Conclusions.

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• Ensaio de materiais
• Acústica e engenharia de som
• Mecânica ondulatória (vibração e acústica)

Gauge Invariance;Negative Refraction;Acoustical Cloaking;Seismic Metamaterials;Crystal Acoustics;Diffraction Tomography;Acoustic Waveguides;Acoustic Filters;Nonlinear Phononic Crystals;Artificial Piezoelectricity