Titlebook: New Acoustics Based on Metamaterials; Woon Siong Gan Book 2018 Springer Nature Singapore Pte Ltd. 2018 Gauge Invariance.Negative Refractio

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Woon Siong Ganall numer ical examples in each chapter to illustrate a topic in statistical theory. Here, we instead make a case study the centerpiece of each chapter. The case studies, which we call labs, raise interesting scienti?c questions, and ?guring out how to answer a question is the starting point for dev

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Symmetry Properties of Acoustic Fields,ials, diverse applications of time reversal acoustics and that phonon is a Goldstone mode. The form invariance of the linear acoustic field equation demonstrates the symmetry properties of acoustic fields. Likewise, form invariance is also applicable to nonlinear acoustic field equations such as Bur

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Basic Mechanisms of Sound Propagation in Solids for Negative Materials,manipulation of these three mechanisms and hence the manipulation of the direction of sound propagation in solids. A detailed description of this three mechanisms for the case of negative mass density and negative bulk modulus enabling negative acoustical metamaterial are given.

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Artificial Piezoelectricity,ous symmetry breaking. Artificial piezoelectricity with negative permittivity, negative piezoelectric strain constant and negative piezoelectric stress constant is described. The stiffened Christoffel equation for artificial piezoelectricity is given. Artificial piezoelectricity opens the way for ar

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Acoustic Diode,cing a nonlinear medium made of nonlinear phononic crystal. The acoustic diode has potential application in acoustical imaging such as medical imaging with the elimination of acoustic disturbances caused by sound waves going in two directions at the same time and interfering with each other. The pro

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Energy Harvesting and Phononics,ed in the structure of the system for energy harvesting. Here, one needs to design the phononic crystal structure. To enable this, one needs to design the phononic crystal system’s dispersion relation and phonon–phonon interaction in the structure. A classical treatment using continuum medium is use