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This volume contains almost all of the 79 papers presented at the Fourth International Conference on Vibrations at Surfaces. The proceedings reflect the significant advances that have been made in the field of surface vibrations since the previous conference on the topic held in 1982. The presented papers showed a tendency of development in new directions, particularly in relation to dynamical effects occurring in atom and molecule-surface interactions. These proceedings cover the field of surface vibrational spectroscopy in such a way as to make the book an asset to those involved in both ex

Vibrations --- Acoustic surface waves --- Phonons --- Crystals --- Vibration --- Lattice dynamics --- Surfaces

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Drop a pebble in a pond and the results are quite predictable: circular waves flow from the point of impact. Hit a point on a crystalline solid, however, and the expanding waves are highly non-spherical: the elasticity of a crystal is anisotropic. This book provides a fresh look at the vibrational properties of crystalline solids, elucidated by new imaging techniques. From the megahertz vibrations of ultrasound to the near-terahertz vibrations associated with heat, the underlying elastic anisotropy of the crystal asserts itself. Phonons are elementary vibrations that affect many properties of solids - thermal, electrical and magnetic. This text covers the basic theory and experimental observations of phonon propagation in solids. Phonon imaging techniques provide physical insights into such topics as phonon focusing, lattice dynamics and ultrasound propagation. Scattering of phonons from interfaces, superlattices, defects and electrons are treated in detail. The book includes many striking and original illustrations.

Waves. --- Solids. --- Acoustic surface waves. --- Phonons. --- Imaging systems.

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Underwater acoustics --- Acoustic surface waves --- Signal processing --- Oceanography --- Measurement --- Congresses --- Research --- Underwater acoustics - Measurement - Congresses --- Acoustic surface waves - Congresses --- Signal processing - Congresses --- Oceanography - Research - Congresses

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Last volume in the series 'Acoustic and Elastic Wave Fields in Geophysics'

Elastic waves --- Acoustic surface waves --- Waves, Acoustic surface --- Waves, Elastic surface --- Sound-waves --- Surface waves (Oceanography) --- Elasticity --- Waves --- Underground nuclear explosions --- Elastic waves. --- Acoustic surface waves. --- Geology. --- Science.

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Surface acoustic wave (SAW) devices are recognized for their versatility and efficiency in controlling and processing electrical signals. This has resulted in a multitude of device concepts for a wide range of signal processing functions, such as delay lines, filters, resonators, pulse compressors, convolvers, and many more. As SAW technology has found its way into mass market products such as TV receivers, pagers, keyless entry systems and cellular phones, the production volume has risen to millions of devices produced every day. At the other end of the scale, there are specialized high performance signal processing SAW devices for satellite communication and military applications, such as radar and electronic warfare.This volume, together with Volume 2, presents an overview of recent advances in SAW technology, systems and applications by some of the foremost researchers in this exciting field.

Acoustic surface wave devices. --- Acoustic surface waves. --- Waves, Acoustic surface --- Waves, Elastic surface --- Elastic waves --- Sound-waves --- Surface waves (Oceanography) --- Surface acoustic wave devices --- Surface wave devices, Acoustic --- Acoustic surface waves --- Electro-acoustics --- Piezoelectric devices