Download or read book Acoustic Microscopy at Cryogenic Temperatures written by and published by . This book was released on 1978 with total page 56 pages. Available in PDF, EPUB and Kindle. Book excerpt: During the past year work has been accomplished on developing an acoustic microscope in superfluid helium. In order to test the apparatus, we have studied its behavior using focussed beams in water and a plane beam in helium. Images of various objects have been produced using water and liquid argon as propagating media. Some initial work has been done towards producing quarter wave matching layers to reduce the interface loss between the lens material and the liquid helium.
Download or read book Cryogenic Acoustic Microscopy written by Daniel Rugar and published by . This book was released on 1981 with total page 488 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Acoustic Microscopy at Cryogenic Temperatures written by STANFORD UNIV CA EDWARD L GINZTON LAB OF PHYSICS. and published by . This book was released on 1982 with total page 8 pages. Available in PDF, EPUB and Kindle. Book excerpt: Some years ago it became evident that research devoted to acoustic microscopy at cryogenic temperatures would allow us to realize the full potential of this new instrument and extend the resolving power beyond the limits imposed by the room temperature microscope. In 1977, the Office of Naval Research agreed to fund such a program at Stanford University. It was to be directed toward an increase in our understanding of the propagation of acoustic waves in cryogenic fluids and the physics of imaging with these waves. We were to concern ourselves with the submicron region. This short report includes a compilation of the written materials and presentations that have resulted from this program. The work of Dr. Logan Hargrove, who has guided the program since its inception, is deeply appreciated. Cryogenic fluids are attractive for propagation of acoustic waves with short wavelengths since the velocity of sound is low and the attenuation is moderate. Much of our work has been done with liquid argon and liquid nitrogen. High quality acoustic images have been recorded in these media and it has been shown that an operating instrument can be a rather simple device.
Download or read book Cryogenic Acoustic Microscopy written by C. F. Quate and published by . This book was released on 1986 with total page 35 pages. Available in PDF, EPUB and Kindle. Book excerpt: The progress on the ultra-high resolution acoustic microscope is described. Two main areas are investigated: signal-to-noise ratio and a mechanical scanner. The signal-to-noise ratio (SNR) is improved by developing higher efficiency acoustic transducers for generating coherent sound and superconducting bolometers for broadband detection of sound. Some experiments to understand the effects of pressurizing liquid helium on the propagation of high intensity focused sound waves in superfluid helium are described. The possibility of utilizing parametric amplification of sound in liquid helium to improve the SNR is reported. Finally, the design and development of a new scanner which will have a wider scanning range with great precision operating in pressurized liquid helium are also described.
Download or read book Acoustic Microscopy written by Andrew Briggs and published by Oxford University Press. This book was released on 2010 with total page 383 pages. Available in PDF, EPUB and Kindle. Book excerpt: For many years Acoustic Microscopy has been the definitive book on the subject. A key development since it was first published has been the development of ultrasonic force microscopy. The 2nd edition has a major new chapter on this technique and its applications.
Download or read book An Introduction to Scanning Acoustic Microscopy written by Andrew Briggs and published by Oxford University Press, USA. This book was released on 1985 with total page 88 pages. Available in PDF, EPUB and Kindle. Book excerpt: This up-to-date handbook provides a lucid introduction to acoustic microscopes with submicron resolution. The first half of the handbook shows how to operate the instrument, offering a description of a typical acoustic microscope, some detailed guidance for use, and a helpful discussion of the elements of contrast theory. The second half examines samples of the images that can be obtained, including micrographs of composites, grain structure, layered devices, and fine microcracks. The author has designed the book to help both those who have recently purchased an acoustic microscope and those who merely wish to find out if an acoustic microscope can help their research, whether it be in materials science, metallurgy, surface physics, or surface chemistry.
Download or read book Acoustic Microscopy written by Roman Gr. Maev and published by John Wiley & Sons. This book was released on 2008-09-02 with total page 302 pages. Available in PDF, EPUB and Kindle. Book excerpt: This only and up-to-date monograph on this versatile method covers its use in a range of applications spanning the fields of physics, materials science, electrical engineering, medicine, and research and industry. Following an introduction, the highly experienced author goes on to investigate acoustic field structure, output signal formation in transmission raster acoustic microscopes and non-linear acoustic effects. Further chapters deal with the visco-elastic properties and microstructure of the model systems and composites used, as well as polymer composite materials and the microstructure and physical-mechanical properties of biological tissues. A handy reference for materials scientists, electrical engineers, radiologists, laboratory medics, test engineers, physicists, and graduate students.
Download or read book Advances in Acoustic Microscopy written by Andrew Briggs and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 374 pages. Available in PDF, EPUB and Kindle. Book excerpt: In 1992 Acoustic Microscopy was published by Oxford University Press, in the series of Monographs on the Physics and Chemistry of Materials. Reviews appeared in the Journal of Microscopy [169 (1), 91] and in Contemporary Physics [33 (4), 296]. At the time of going to press, it seemed that the field of acoustic microscopy had settled down from the wonderful developments in resolution that had been seen in the late seventies and the early eighties and from the no less exciting developments in quantitative elastic measurements that had followed. One reviewer wrote, "The time is ripe for such a book, now that the expansion of the subject has perceptively slowed after it was detonated by Lemons and Quate. " [A. Howie, Proc. RMS 27 (4), 280]. In many ways, this remains true. The basic design for both imaging and quantitative instruments is well-established; the upper frequency for routine imaging is the 2 GHz established by the Ernst Leitz scanning acoustic microscope (ELSAM) in 1984. For the most accurate V(z) measurements, the 225-MHz line-focus-beam lens, developed at Tohoku Univer sity a little before then, remains standard. The principles of the contrast theory have been confirmed by abundant experience; in particular the role of surface acoustic waves, such as Rayleigh waves, dominates the contrast in most high resolution studies of many materials.
Download or read book Advances in Acoustic Microscopy written by Andrew Briggs and published by Springer Science & Business Media. This book was released on 2013-11-11 with total page 292 pages. Available in PDF, EPUB and Kindle. Book excerpt: This is the second volume of Advances in Acoustic Microscopy. It continues the aim of presenting applications and developments of techniques that are related to high-resolution acoustic imaging. We are very grateful to the authors who have devoted considerable time to preparing these chapters, each of which describes a field of growing importance. Laboratories that have high-performance acoustic microscopes are frequently asked to examine samples for which the highest available resolution is not necessary, and the ability to penetrate opaque layers is more significant. Such applications can be thought of as bridging the gap be tween acoustic microscopy at low gigahertz frequencies, and on the one hand nondestructive testing of materials at low megahertz frequencies and on the other hand medical ultrasonic imaging at low megahertz frequencies. Commercial acoustic microscopes are becoming increasingly available and popular for such applications. We are therefore delighted to be able to begin the volume with chapters from each of those two fields. The first chapter, by Gabriele Pfannschmidt, describes uses of acoustic microscopy in the semiconductor industry. It provides a splendid balance to the opening chapter of Volume 1, which came from a national research center, being written from within a major European electronics industry itself. Dr Pfann schmidt describes the use of two quite different types of acoustic microscopes, and points out the advantages of each for specific purposes.
Download or read book Selected Papers on Scanning Acoustic Microscopy written by Butrus T. Khuri-Yakub and published by . This book was released on 1992 with total page 570 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Advances in Acoustic Microscopy and High Resolution Imaging written by Roman Gr. Maev and published by John Wiley & Sons. This book was released on 2013-02-04 with total page 393 pages. Available in PDF, EPUB and Kindle. Book excerpt: Novel physical solutions, including new results in the field of adaptive methods and inventive approaches to inverse problems, original concepts based on high harmonic imaging algorithms, intriguing vibro-acoustic imaging and vibro-modulation technique, etc. were successfully introduced and verified in numerous studies of industrial materials and biomaterials in the last few years. Together with the above mentioned traditional academic and practical avenues in ultrasonic imaging research, intriguing scientific discussions have recently surfaced and will hopefully continue to bear fruits in the future. The goal of this book is to provide an overview of the recent advances in high-resolution ultrasonic imaging techniques and their applications to biomaterials evaluation and industrial materials. The result is a unique collection of papers presenting novel results and techniques that were developed by leading research groups worldwide. This book offers a number of new results from well-known authors who are engaged in aspects of the development of novel physical principles, new methods, or implementation of modern technological solutions into current imaging devices and new applications of high-resolution imaging systems. The ultimate purpose of this book is to encourage more research and development in the field to realize the great potential of high resolution acoustic imaging and its various industrial and biomedical applications.
Download or read book Acoustic Microscopy by Mechanical Scanning written by R. A. Lemons and published by . This book was released on 1975 with total page 516 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Ultrasonic Methods in Evaluation of Inhomogeneous Materials written by A. Alippi and published by Springer Science & Business Media. This book was released on 2012-12-06 with total page 407 pages. Available in PDF, EPUB and Kindle. Book excerpt: The purpose of the School, the content of which is reflected in this book, is to bring together experiences and knowledge of those acousticians who are particularly sensible to materials and their properties, specifically to those materials that may be called inhomo geneous. The two things together: acoustics and inhomogeneity, define factually a dimension less parameter, AI a, which is the ratio between the sound wavelength and the spatial length of the material where its physical characteristics notably change. An implicit defmition is, therefore, at hand for an inhomogeneous medium, which has the characteristic of a condi tioned definition and sets a looser constraint to the otherwise strict statement of invariance under translations. Composite, biologicai, porous, stratified materials are in the list of inhomogeneous materials, whose technological or structural interest has grown greatly in recent times. Ul trasonic waves offer a means for their investigation, which is valuable for it can be non destructive, continuous in time, spatially localized, dependent on the size of inhomoge neities.
Download or read book Nonlinear Acoustic Microscopy written by Stanford University. Microwave Laboratory and published by . This book was released on 1976 with total page 28 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Improved Resolution in the Acoustic Microscope written by Calvin F. Quate and published by . This book was released on 1977 with total page 60 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Foundations of Millimeter wave Frequency Acoustic Microscopy written by Lloyd John LaComb and published by . This book was released on 1989 with total page 530 pages. Available in PDF, EPUB and Kindle. Book excerpt:
Download or read book Research in Acoustic Microscopy written by Calvin F. Quate and published by . This book was released on 1977 with total page 82 pages. Available in PDF, EPUB and Kindle. Book excerpt:
