This book highlights the theories and applications of quantum acoustical imaging which can be considered as a part of quantum technology. It starts with the theories and background principles of this new field in depth.The examples of some present forms of available acoustical imaging which can be considered as quantum acoustical imaging are given such as ultrasonics in the terahertz range with the use of optical transducers for producing terahertz ultrasound and the theory of sound amplification by stimulated emission of radiation (SASER) and principles based on terahertz ultrasound. The SASER transducer is described, followed by the applications of SASER.Other examples of quantum acoustical imaging are the atomic force acoustic microscope (AFAM) and the ultrasonic force microscope. The author's personal inventions of quantum acoustical imaging are a system based on phonons entanglement based on the quantum property of phonons entanglement and the quantum ultrasound diffraction tomography system.The advantage of quantum acoustical imaging is the defeat of the classical Rayleigh image resolution limit. An unique feature of this book is that it has gone in depth into the quantum theories of acoustical imaging such as phonons entanglement,,superposition principle and the application of transport theory.Quantum microphones and quantum transducers are also introduced with a final chapter on quantum image processing.

Auteur

Dr. Woon Siong Gan obtained his PhD at the age of 24. He completed his B.Sc. in Physics in 1965, his DIC in acoustics & vibration science in May 1967, and his Ph.D. in acoustics in February 1969, all from the Physics Department of the Imperial College London.His PhD thesis pioneered topological phase transition. IN 1966 he coined and invented the name transport theory in condensed matter physics. His PhD thesis also played a role in the founding of the field of condensed matter physics. Today transport theory is the foundation of theoretical design of materials. It is also an important theory in condensed matter physics and is related to phase transition.From 1970 to 1979, he was an associate professor at the Physics Department of Nanyang University in Singapore. From 1979 to 1989, he was a practicing acoustical consultant. In 1989, he founded Acoustical Technologies Singapore Pte Ltd, a research & technologies company engaging in ultrasound technologies, especially acoustical imaging. The company has since developed and patented the scanning acoustic microscope (SAM) and the surface acoustic wave (SAW) devices. Besides research and development works, he is also involved in fundamental research on transport theory approach to phase transition and phase transition as a transport phenomenon.He has published several papers on acoustical imaging,and the applications of gauge theory to acoustics.He is also the author of the books Acoustical Imaging: Techniques and Applications for Engineers.,published by John Wiley & Sons, New Acoustics,based on Metamaterials,published by Springer, Gauge Invariance Approach to Acoustic Fields, published by Springer, Signal Processing and Image Processing applied to Acoustical Imaging, published by Springer, Time Reversal Acoustics, published by Springer, and Nonlinear Acoustical Imaging published by Springer.

Contenu

Ultrasonics in the Tetrahertz Frequency Range-Theories.- Optical Transducers.- Theories and Experiments.- Quantum Theory of Terahertz Frequency Range.- Application to Nanoacoustical Imaging with Nanometer Image Resolution.- SASER-Theories and Principles based on Tetrahertz Ultrasound.- Transducers for SASER.- Applications of SASER.- Quantum Acoustical Imaging based on Quantum Mechanical Properties-Phonon Entanglement.- Quantum Acoustical Microscope based on Entanglement-Enhancement of Image Resolution.- Conclusions.