New Acoustics Based on Metamaterials

Description

This book highlights the acoustical metamaterials’ capability to manipulate the direction of sound propagation in solids which in turn control the scattering, diffraction and refraction, the three basic mechanisms of sound propagation in solids. This gives rise to several novel theories and applications and hence the name new acoustics. As an introduction, the book mentions that symmetry of acoustic fields is the theoretical framework of acoustical metamaterials. This is then followed by describing that acoustical metamaterials began with locally resonant sonic materials which ushered in the concept of negative acoustic parameters such as mass density and bulk modulus. This complies with form invariance of the acoustic equation of motion which again exemplifies the symmetry property of acoustic fields. Front Matter ....Pages i-xvi Symmetry Properties of Acoustic Fields (Woon Siong Gan)....Pages 1-16 Negative Refraction and Acoustical Cloaking (Woon Siong Gan)....Pages 17-45 Basic Mechanisms of Sound Propagation in Solids for Negative Materials (Woon Siong Gan)....Pages 47-75 Artificial Elasticity (Woon Siong Gan)....Pages 77-88 Artificial Piezoelectricity (Woon Siong Gan)....Pages 89-105 Acoustic Diode (Woon Siong Gan)....Pages 107-123 Energy Harvesting and Phononics (Woon Siong Gan)....Pages 125-186 Local Resonant Structures (Woon Siong Gan)....Pages 187-241 Application of Acoustic Metamaterial to Time-Reversal Acoustics (Woon Siong Gan)....Pages 243-257 Underwater Acoustical Cloaking (Woon Siong Gan)....Pages 259-275 Seismic Metamaterials (Woon Siong Gan)....Pages 277-288 Application of Acoustic Metamaterials to Finite Amplitude Sound Wave (Woon Siong Gan)....Pages 289-300 Acoustical Imaging on a Curvilinear Spacetime (Woon Siong Gan)....Pages 301-305 Transport Theory is Key Foundation of Theoretical Metamaterials Design—Metamaterial is Artificial Phase Transition (Woon Siong Gan)....Pages 307-313