This book explores the rapidly evolving field of acoustic metamaterials, focusing on their ability to manipulate sound waves through asymmetric transmission, acoustic focusing, and acoustic asymmetric focusing. It introduces innovative research methods and achievements, such as the use of underwater plate-like metamaterials, airborne metamaterials, and phase-controlled metamaterials to achieve precise control over sound propagation in 2D and 3D spaces. Readers will be particularly interested in the novel applications of these materials in medical ultrasound, underwater detection, acoustic communication, and noise reduction, as well as the development of advanced devices like broadband AF lenses and thermoacoustic phase-controlled metamaterials. The book is enriched with detailed illustrations, tables, and clear theoretical explanations, making complex concepts accessible. It provides valuable insights into the design and modulation of high-performance acoustic devices, offering both foundational knowledge and advanced techniques for practical applications. This work is particularly beneficial for researchers, engineers, and graduate students in acoustics, materials science, and related fields, as it bridges the gap between theoretical research and real-world applications.

Explores advanced acoustic metamaterials for asymmetric transmission, focusing, and asymmetric focusing in 2D/3D spaces Introduces innovative thermoacoustic phase-controlled metamaterials for broadband sound manipulation Demonstrates practical applications in medical ultrasound, underwater detection, and acoustic communication

Autorentext

**Hong-Xiang Sun is ** Professor and Vice Dean of School of Physics and Electronic Engineering at Jiangsu University, Zhenjiang, China. He is also Council Member of the Jiangsu Acoustical Society. He has been awarded as Young Academic Leader and Outstanding Young Backbone Teacher in the "Qinglan Project" of universities in Jiangsu Province and a high-level talent in the "Six Talent Peaks" of Jiangsu Province. His primary research focuses on acoustic metamaterials, topological acoustics, non-Hermitian acoustics, and noise reduction. He has published 110 papers as First or Corresponding Author in Nature and Science series sub-journals, as well as Physical Review Letters, and other high-impact journals. Additionally, he has authored 2 books and holds 6 authorized national invention patents. He has led the completion of 3 National Natural Science Foundation projects and 10 other provincial-level research projects.

Yong Ge is**** Associate Professor at School of Physics and Electronic Engineering, Jiangsu University. His research primarily focuses on acoustic metamaterials, acoustic metasurfaces, acoustic topological insulators, and acoustic field manipulation. As First Author, Co-First Author, or Corresponding Author, he has published 22 papers in Nature and Science series sub-journals, Applied Physics Reviews, and other high-impact journals. He has completed 2 National Natural Science Foundation projects and 3 other provincial-level research projects.

**Shou-Qi Yuan is ** Professor and Director of the National Research Center of Pumps and Pumping Systems Engineering. He serves as Chairman of the Asian Fluid Machinery Committee. He has led 4 major research projects, including the National Key R&D Program and key projects of the National Natural Science Foundation of China. As First Author or Corresponding Author, he has published 396 papers in journals such as Transactions of the Chinese Society of Agricultural Machinery and Journal of Fluids Engineering, with 190 papers indexed by SCI and 185 by EI. He has authored 16 books and received numerous awards, including 2 National Science and Technology Progress Awards (Second Class), 2 National Teaching Achievement Awards (Second Class), 5 Provincial and Ministerial Science and Technology Progress Awards (First Class). He holds 14 international invention patents and 155 Chinese invention patents, including one Chinese Patent Silver Award.

Inhalt

Foreword.- Preface.- List of Abbreviations.- Introduction.- Basic theory of sound manipulation based on acoustic metamaterials.- Acoustic asymmetric transmission by underwater plate-like metamaterials.- Acoustic asymmetric transmission by airborne metamaterials.- Acoustic focusing in ring-shaped metamaterials.- Acoustic focusing by phase-controlled metamaterials.- Acoustic focusing by thermoacoustic phase-controlled metamaterials.- Acoustic asymmetric focusing by asymmetric modulation metamaterials.- Three-dimensional acoustic focusing and asymmetric focusing by phase-controlled metamaterials.