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El. knyga: Acoustic Metamaterials: Absorption, Cloaking, Imaging, Time-Modulated Media, and Topological Crystals

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The revised edition of this book offers an expanded review of acoustic metamaterials; novel materials which can manipulate sound waves, surface Rayleigh waves and water waves, in surprising ways, which include collimation, focusing, negative refraction, passive and active cloaking, sonic screening and extraordinary transmission. It covers both experimental and theoretical aspects of acoustic and elastic waves propagating in structured composites, with a focus on effective properties associated with negative refraction, lensing and cloaking. Updated chapters cover filtering effects, extraordinary transmission, sub-wavelength imaging via tomography or time-reversal techniques, cloaking via transformation acoustics, elastodynamics, and acoustic scattering cancellation.





For this revised edition, six new chapters have been introduced to reflect recent developments in experimental acoustics and metasurfaces including acoustic impedance gratings and mirror symmetric metamaterials, phononic subsurfaces, time-modulated and topological crystals. The latter two are illustrated by simple Python program examples.  





The broad scope gives the reader an overview of the state of the art in acoustic metamaterials research and an indication of future directions and applications. It will serve as a solid introduction to the field for advanced students and researchers in physics, applied mathematics and mechanical engineering, and a valuable reference for those working in metamaterials and related areas.

1 Fundamentals of Acoustic Metamaterials.- 2 Locally Resonant Structures for Low Frequency Surface Acoustic Band Gap Applications.- 3 Band-Gap Properties of Prestressed Structures.- 4 Ultrasound Transmission Through Periodically Perforated Plates.- 5 Novel Ultrasound Imaging Applications.- 6 Subwavelength Focussing in Metamaterials Using Far Field Time Reversal.- 7 Anisotropic Metamaterials for Transformation Acoustics and Imaging.- 8 Transformation Acoustics.- 9 Acoustic Cloaking via Homogenization.- 10 Acoustic Cloaking with Plasmonic Shells.- 11 Cloaking Liquid Surface Waves and Plasmon Polaritons.- 12 Transformation Elastodynamics and Active Exterior Acoustic Cloaking.- 13 Experimental Acoustics and Metasurfaces.- 14 Resonators atop Surfaces.- 15 Elastic Metamaterials.

Richard Craster is Professor of Applied Mathematics at Imperial College. He has research interests across a broad spectrum of fluid mechanics and elasticity (fracture mechanics, diffraction theory, wave phenomena, applied complex analysis, Newtonian thin-layer theories, viscoplasticity, guided elastic waves, and waves in microstructured media) and is involved in their applications in engineering and physics.





Dr Sébastien Guenneau is a Reader in Physics at Imperial College and a member of the CNRS-Imperial Abraham de Moivre International Research Laboratory. He previously held some positions as a lecturer in the department of mathematical sciences at Liverpool University and as a CNRS researcher at the Fresnel Institute of Aix-Marseille Université. His research focusses on acoustic, mechanical and thermal metamaterials, with a special emphasis on topological and time-modulated periodic and quasiperiodic media.
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