Physical Acoustics V9 - 1st Edition - ISBN: 9780123956705, 9780323156677

Physical Acoustics V9

1st Edition

Principles and Methods

Editors: Warren P. Mason
eBook ISBN: 9780323156677
Imprint: Academic Press
Published Date: 1st January 1972
Page Count: 306
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Physical Acoustics: Principles and Methods, Volume IX includes four chapters that are device-oriented and devoted to understanding electron drag stresses on dislocations and difference in flow stress between the normal and superconducting states of Type I and Type II superconductors. Chapter 1 explains that when a dislocation moves through a crystal, it gives up energy to the medium either through a nonlinear motion over a dynamic Peierls barrier or through conversion of energy by scattering of electrons or phonons, which takes place with an energy loss proportional to the velocity. The next chapter discusses the propagation of ultrasonic surface waves in thin layers. The thin layer confines a surface wave laterally, providing a desired dispersion characteristic, acting as part of a transducer for generating surface waves, or providing an interaction region for other phenomena. Chapter 3 deals with a generation of solid state control elements that utilize the inverse piezoelectric effect. The last chapter provides approximate equations for coupled resonators and methods for accurately controlling the band frequency and bandwidth. This book is a useful reference for students and physicists working on physical acoustics.

Table of Contents

Contributors Preface 1 Difference in Electron Drag Stresses on Dislocation Motion in the Normal and the Superconducting States for Type I and Type II Superconductors I.Introduction II. Experimental III. Theory IV. Discussion V. Summary Appendix References 2 Elastic Wave Propagation in Thin Layers I.Introduction II. Wave Equation and Boundary Conditions III.Isotropic Problem IV. Crystal Symmetry V. Anisotropic Examples References 3 Solid State Control Elements Operating on Piezoelectric Principles I.Introduction II. Basic Phenomenological Theory III. Electrostatic Devices IV. The Bimorph Actuator in a Control Loop V. Derivation of Transfer Function of Cantilever Bimorph Actuator VI. Piezoelectric Stepping Motor in Control Loop VII. A Laser Beam Deflector System VIII. Future Development References 4 Monolithic Crystal Filters I.Introduction II. Thickness Vibrations in Thin Piezoelectric Plates III. Equivalent Electrical Networks for Thickness Vibrations in Thin Piezoelectric Plates IV. Process Technology V. MCF Applications References 5 Design and Technology of Piezoelectric Transducers for Frequencies Above 100 MHz I.Introduction II. The Equivalent Circuit of a Transducer and Its Terminal Parameters III. Mason's Equivalent Circuit IV. The Transducer with a Single Piezoelectric Layer V. Transducers with Multiple Piezoelectric Layers and Interlaced Comb Surface Wave Transducers VI. Materials VII. Technological Methods VIII. Discussion and Conclusions References Author Index Subject Index Contents of Previous Volumes


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© Academic Press 1972
Academic Press
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About the Editor

Warren P. Mason

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