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Ultrasonic Transducers

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Ultrasonic Transducers

Ultrasonic Transducers Book
Author : K Nakamura
Publisher : Elsevier
Release : 2012-08-23
ISBN : 0857096303
Language : En, Es, Fr & De

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Book Description :

Ultrasonic transducers are key components in sensors for distance, flow and level measurement as well as in power, biomedical and other applications of ultrasound. Ultrasonic transducers reviews recent research in the design and application of this important technology. Part one provides an overview of materials and design of ultrasonic transducers. Piezoelectricity and basic configurations are explored in depth, along with electromagnetic acoustic transducers, and the use of ceramics, thin film and single crystals in ultrasonic transducers. Part two goes on to investigate modelling and characterisation, with performance modelling, electrical evaluation, laser Doppler vibrometry and optical visualisation all considered in detail. Applications of ultrasonic transducers are the focus of part three, beginning with a review of surface acoustic wave devices and air-borne ultrasound transducers, and going on to consider ultrasonic transducers for use at high temperature and in flaw detection systems, power, biomedical and micro-scale ultrasonics, therapeutic ultrasound devices, piezoelectric and fibre optic hydrophones, and ultrasonic motors are also described. With its distinguished editor and expert team of international contributors,Ultrasonic transducers is an authoritative review of key developments for engineers and materials scientists involved in this area of technology as well as in its applications in sectors as diverse as electronics, wireless communication and medical diagnostics. Reviews recent research in the design and application of ultrasonic transducers Provides an overview of the materials and design of ultrasonic transducers, with an in-depth exploration of piezoelectricity and basic configurations Investigates modelling and characterisation, applications of ultrasonic transducers, and ultrasonic transducers for use at high temperature and in flaw detection systems

Power Sonic and Ultrasonic Transducers Design

Power Sonic and Ultrasonic Transducers Design Book
Author : Bernard Hamonic,Jean N. Decarpigny
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642732631
Language : En, Es, Fr & De

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Book Description :

This volume contains the Proceedings of the International Workshop on the Design of Power Sonic and Ultrasonic Transducers, which was held in the Maison de l'Entreprise et des Technologies Nouvelles, Marcq en Baroeul, near Lille, France, on May 26 and 27, 1987. The main objective of this Workshop was to discuss all aspects of high power problems in the design of electroacoustic transducers and to stimulate an exchange of knowledge and experience between researchers and industrial ists involved in this multidisciplinary field. The scientific program included 13 invited contributions, and there were 80 participants from England, France, Italy, Spain, Sweden and the United States. The editors wish to thank the authors and attendees for their active par ticipation, and they hope that these Proceedings will allow readers to share in the stimulating atmosphere of the sessions. They also wish to thank eve ryone who undertook simultaneous translation, clerical work, typing of the Proceedings, production of the illustrations, or any other of the numerous tasks connected with this venture. Special mention has to be made of Mrs. E. Litton (ISEN, Lille) for her constant and kind help from the beginning of the project to the very end of the editing, Dr. R. Bossut (ISEN, Lille) for his efficient proofreading, and Dr. H.U. Daniel (Springer-Verlag) for his interest in these Proceedings as well as his kind and efficient support.

Interface Engineering of Capacitive Micromachined Ultrasonic Transducers for Medical Applications

Interface Engineering of Capacitive Micromachined Ultrasonic Transducers for Medical Applications Book
Author : Anonim
Publisher : Stanford University
Release : 2011
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Capacitive micromachined ultrasonic transducers (CMUTs), have been widely studied in academia and industry over the last decade. CMUTs provide many benefits over traditional piezoelectric transducers including improvement in performance through wide bandwidth, and ease of electronics integration, with the potential to batch fabricate very large 2D arrays with low-cost and high-yield. Though many aspects of CMUT technology have been studied over the years, packaging the CMUT into a fully practical system has not been thoroughly explored. Two important interfaces of packaging that this thesis explores are device encapsulation (the interface between CMUTs and patients) and full electronic integration of large scale 2D arrays (the interface between CMUTs and electronics). In the first part of the work, I investigate the requirements for the CMUT encapsulation. For medical usage, encapsulation is needed to electrically insulate the device, mechanically protect the device, and maintain transducer performance, especially the access of the ultrasound energy. While hermetic sealing can protect many other MEMS devices, CMUTs require mechanical interaction to a fluid, which makes fulfilling the previous criterion very challenging. The proposed solution is to use a viscoelastic material with the glass-transition-temperature lower than room temperature, such as Polydimethylsiloxane (PDMS), to preserve the CMUT static and dynamic performance. Experimental implementation of the encapsulated imaging CMUT arrays shows the device performance was maintained; 95 % of efficiency, 85% of the maximum output pressure, and 91% of the fractional bandwidth (FBW) can be preserved. A viscoelastic finite element model was also developed and shows the performance effects of the coating can be accurately predicted. Four designs, providing acoustic crosstalk suppression, flexible substrate, lens focusing, and blood flow monitoring using PDMS layer were also demonstrated. The second part of the work, presents contributions towards the electronic integration and packaging of large-area 2-D arrays. A very large 2D array is appealing for it can enable advanced novel imaging applications, such as a reconfigurable array, and a compression plate for breast cancer screening. With these goals in mind, I developed the first large-scale fully populated and integrated 2D CMUTs array with 32 by 192 elements. In this study, I demonstrate a flexible and reliable integration approach by successfully combining a simple UBM preparation technique and a CMUTs-interposer-ASICs sandwich design. The results show high shear strength of the UBM (26.5 g), 100% yield of the interconnections, and excellent CMUT resonance uniformity (σ = 0.02 MHz). As demonstrated, this allows for a large-scale assembly of a tile-able array by using an interposer. Interface engineering is crucial towards the development of CMUTs into a practical ultrasound system. With the advances in encapsulation technique with a viscoelastic polymer and the combination of the UBM technique to the TSV fabrication for electronics integration, a fully integrated CMUT system can be realized.

Piezoelectric Transducers and Applications

Piezoelectric Transducers and Applications Book
Author : Antonio Arnau Vives
Publisher : Springer Science & Business Media
Release : 2008-10-10
ISBN : 3540775080
Language : En, Es, Fr & De

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Book Description :

This updated guide to the current state-of-the-art of this complex and multidisciplinary area fills an urgent need for a unified source of information on piezoelectric devices and their astounding variety of existing and emerging applications. New understandings underlying the principles of Piezoelectric Transducers, new technological advances in its applications, and new areas of utility for these transducers made a second edition of this book inevitable.

Ultrasonic Transducer Materials

Ultrasonic Transducer Materials Book
Author : O. E. Mattiat
Publisher : Springer Science & Business Media
Release : 2013-03-13
ISBN : 1475704682
Language : En, Es, Fr & De

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Book Description :

In recent years remarkable progress has been made in the development of materials for ultrasonic transducers. There is a continuing trend towards increasingly higher frequency ranges for the application of ultrasonic trans ducers in modern technology. The progress in this area has been especially rapid and articles and papers on the subject are scattered over numerous technical and scientific journals in this country and abroad. Although good books have appeared on ultrasonics in general and ultrasonic transducers in particular in which, for obvious reasons, materials play an important part, no comprehensive treatise is available that represents the state-of-the-art on modern ultrasonic transducer materials. This book intends to fill a need for a thorough review of the subject. Not all materials are covered of which, theoretically, ultrasonic trans ducers could be made but those that are or may be of technical impor tance and which have inherent electro acoustic transducer properties, i.e., materials that are either magnetostrictive, electrostrictive, or piezoelectric. The book has been devided into three parts which somewhat reflect the historic development of ultrasonic transducer materials for important tech nical application. Chapter 1 deals with magnetostrictive materials, magnetostrictive met als and their alloys, and magnetostrictive ferrites (polycrystalline ceramics). The metals are useful especially in cases where ruggednes of the transducers are of overriding importance and in the lower ultrasonic frequency range.

Sensors and Transducers

Sensors and Transducers Book
Author : Ian Sinclair
Publisher : Elsevier
Release : 2000-12-05
ISBN : 0080516998
Language : En, Es, Fr & De

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Book Description :

In this book Ian Sinclair provides the practical knowhow required by technician engineers, systems designers and students. The focus is firmly on understanding the technologies and their different applications, not a mathematical approach. The result is a highly readable text which provides a unique introduction to the selection and application of sensors, transducers and switches, and a grounding in the practicalities of designing with these devices. The devices covered encompass heat, light and motion, environmental sensing, sensing in industrial control, and signal-carrying and non-signal switches. Get up to speed in this key topic through this leading practical guide Understand the range of technologies and applications before specifying Gain a working knowledge with a minimum of maths

NBS Special Publication

NBS Special Publication Book
Author : United States. National Bureau of Standards
Publisher : Unknown
Release : 1968
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download NBS Special Publication book written by United States. National Bureau of Standards, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Design of Efficient Broadband Ultrasonic Transducers

Design of Efficient  Broadband Ultrasonic Transducers Book
Author : Stanford University Ginzton Laboratory,John Douglas Fraser
Publisher : Unknown
Release : 1979
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Design of Efficient Broadband Ultrasonic Transducers book written by Stanford University Ginzton Laboratory,John Douglas Fraser, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Piezoelectricity

Piezoelectricity Book
Author : C. Rosen,B.V. Hiremath,R. Newnham
Publisher : Springer Science & Business Media
Release : 1992-02-24
ISBN : 9780883186473
Language : En, Es, Fr & De

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Book Description :

This collection of 32 major review papers provides a complete understanding of the physics of piezoelectricity. With a thorough overview of applications and a major section exploring measurements and standards, this volume gives a systematic derivation of piezoelectric coefficients and equations of state for coupling mechanical, electrical, and thermal fields. A useful graduate text for design engineers, materials scientists, chemists, metallurgists, and condensed matter physicists.

New Developments in Ultrasonic Transducers and Transducer Systems

New Developments in Ultrasonic Transducers and Transducer Systems Book
Author : Frederic L. Lizzi
Publisher : Society of Photo Optical
Release : 1992
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download New Developments in Ultrasonic Transducers and Transducer Systems book written by Frederic L. Lizzi, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Theoretical and Computational Acoustics 2001

Theoretical and Computational Acoustics 2001 Book
Author : Er-Chang Shang
Publisher : World Scientific
Release : 2002
ISBN : 9789812777362
Language : En, Es, Fr & De

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Book Description :

This book contains 67 papers presented at ICTCA2001. It includes three keynote addresses surveying the frontier developments in computational and theoretical acoustics. The papers cover aero-, seismo- and ocean acoustics, as well as ultrasonics. Computational methods, numerical simulation, theoretical analysis and experimental results are emphasized by different papers.The proceedings have been selected for coverage in: Index to Scientific & Technical Proceedings (ISTP CDROM version / ISI Proceedings)

Ultrasonics International 87

Ultrasonics International 87 Book
Author : Yong Zhou
Publisher : Elsevier
Release : 2013-09-17
ISBN : 1483140539
Language : En, Es, Fr & De

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Book Description :

Ultrasonics International 87 contains the Proceedings of the Ultrasonics International Conference and Exhibition held at London, United Kingdom on July 1987. The conference discussed and reviewed some of the developments in the field of ultrasonics. The compendium consists of over 150 contributed papers, four invited papers and three plenary papers. Topics discussed include generation of unipolar ultrasonic pulses by signal processing; scattering of longitudinal waves by partially closed slots; piezoelectric materials for ultrasonic transducers; and measuring turbulent flow characteristics using a multi- dimensional ultrasonic probe. Fiber optic sensors, medical imaging and inverse methods, and laser generation of ultrasound are covered as well. Physicians, technicians, researchers, and physical scientists will find the book insightful.

Nanostructure Based Sensors for Gas Sensing from Devices to Systems

Nanostructure Based Sensors for Gas Sensing  from Devices to Systems Book
Author : Sabrina Grassini,Nicola Donato
Publisher : MDPI
Release : 2019-10-29
ISBN : 3039216368
Language : En, Es, Fr & De

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Book Description :

The development of solid state gas sensors based on microtransducers and nanostructured sensing materials is the key point in the design of portable measurement systems able to reach sensing and identification performance comparable with analytical ones. In such a context several efforts must be spent of course in the development of the sensing material, but also in the choice of the transducer mechanism and its structure, in the electrical characterization of the performance and in the design of suitable measurement setups. This call for papers invites researchers worldwide to report about their novel results on the most recent advances and overview in design and measurements for applications in gas sensors, along with their relevant features and technological aspects. Original research papers are welcome (but not limited) on all aspects that focus on the most recent advances in: (i) basic principles and modeling of gas and VOCs sensors; (ii) new gas sensor principles and technologies; (iii) Characterization and measurements methodologies; (iv) transduction and sampling systems; (vi) package optimization; (vi) gas sensor based systems and applications.

Ferroic Materials for Smart Systems

Ferroic Materials for Smart Systems Book
Author : Jiyan Dai
Publisher : John Wiley & Sons
Release : 2019-12-19
ISBN : 3527815341
Language : En, Es, Fr & De

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Book Description :

Presents state-of-the-art knowledge?from basic insights to applications?on ferroic materials-based devices This book covers the fundamental physics, fabrication methods, and applications of ferroic materials and covers bulk, thin films, and nanomaterials. It provides a thorough overview of smart materials and systems involving the interplays among the mechanical strain, electrical polarization, magnetization, as well as heat and light. Materials presented include ferroelectric, multiferroic, piezoelectric, electrostrictive, magnetostrictive, and shape memory materials as well as their composites. The book also introduces various sensor and transducer applications, such as ultrasonic transducers, surface acoustic wave devices, microwave devices, magneto-electric devices, infrared detectors and memories. Ferroic Materials for Smart Systems: Fabrication, Devices and Applications introduces advanced measurement and testing techniques in ferroelectrics, including FeRAM and ferroelectric tunnelling based resistive switching. It also looks at ferroelectricity in emerging materials, such as 2D materials and high-k gate dielectric material HfO2. Engineering considerations for device design and fabrication are examined, as well as applications for magnetostrictive devices. Multiferroics of materials possessing both ferromagnetic and ferroelectric orders is covered, along with ferroelastic materials represented by shape memory alloy and magnetic shape memory alloys. -Brings together physics, fabrication, and applications of ferroic materials in a coherent manner -Discusses recent advances in ferroic materials technology and applications -Covers dielectric, ferroelectric, pyroelectric and piezoelectric materials -Introduces electrostrictive materials and magnetostrictive materials -Examines shape memory alloys and magneto-shape-memory alloys -Introduces devices based on the integration of ferroelectric and ferromagnetic materials such as multiferroic memory device and ME coupling device for sensor applications Ferroic Materials for Smart Systems: Fabrication, Devices and Applications will appeal to a wide variety of researchers and developers in physics, materials science and engineering.

Compr Transducers for Instrumentation

Compr  Transducers for Instrumentation Book
Author : M. G. Joshi
Publisher : Firewall Media
Release : 2005
ISBN : 9788170082163
Language : En, Es, Fr & De

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Book Description :

Download Compr Transducers for Instrumentation book written by M. G. Joshi, available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.

Ultrasonic Nondestructive Evaluation Systems

Ultrasonic Nondestructive Evaluation Systems Book
Author : Pietro Burrascano,Sergio Callegari,Augusto Montisci,Marco Ricci,Mario Versaci
Publisher : Springer
Release : 2014-12-04
ISBN : 3319105663
Language : En, Es, Fr & De

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Book Description :

This book deals with a number of fundamental issues related to the practical implementation of ultrasonic NDT techniques in an industrial environment. The book discusses advanced academic research results and their application to industrial procedures. The text covers the choice and generation of the signals energizing the system to probe position optimization, from quality assessment evaluation to tomographic inversion. With a focus to deepen a number of fundamental aspects involved in the specific objective of designing and developing an ultrasonic imaging system for nondestructive testing, aimed to automatically classify the entire production of an industrial production line, targeted to the field of precision mechanics. The contents of this book is the result of the common effort of six University Research Groups that focused their research activities for two years on this specific objective, working in direct conjunction with primary industrial firms, in a research project funded by the Italian government as a Strategic Research Project.

Diagnostic Ultrasound Imaging Inside Out

Diagnostic Ultrasound Imaging  Inside Out Book
Author : Thomas L. Szabo
Publisher : Elsevier
Release : 2004-09-21
ISBN : 0080491138
Language : En, Es, Fr & De

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Book Description :

Diagnostic Ultrasound Imaging provides a comprehensive introduction to and a state-of-the-art review of the essential science and signal processing principles of diagnostic ultrasound. The progressive organization of the material serves beginners in medical ultrasound science and graduate students as well as design engineers, medical physicists, researchers, clinical collaborators, and the curious. This it the most comprehensive and extensive work available on the core science and workings of advanced digital imaging systems, exploring the subject in a unified, consistent and interrelated manner. From its antecedents to the modern day use and prospects for the future, this it the most up-to-date text on the subject. Diagnostic Ultrasound Imaging provides in-depth overviews on the following major aspects of diagnostic ultrasound: absorption in tissues; acoustical and electrical measurements; beamforming, focusing, and imaging; bioeffects and ultrasound safety; digital imaging systems and terminology; Doppler and Doppler imaging; nonlinear propagation, beams and harmonic imaging; scattering and propagation through realistic tissues; and tissue characterization. Based on the author's over thirty-five years of experience in developing laboratory methodology and standards and conducting research in ultrasound. Conveys the fundamentals of diagnostic ultrasound as well as state-of-the-art reviews of major topics from a historical perspective. Matlab MATLAB problems and examples included. MATLAB problems and examples included

Power Transducers for Sonics and Ultrasonics

Power Transducers for Sonics and Ultrasonics Book
Author : Bernard F. Hamonic,Oscar B. Wilson,Jean-Noel Decarpigny
Publisher : Springer Science & Business Media
Release : 2012-12-06
ISBN : 3642762719
Language : En, Es, Fr & De

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Book Description :

The up-to-date review articles in this book on modern developments in the field of sonic and ultra sonic power transducers present various aspects, applications, and possible future developments that are of interest to engineers and researchers.

Advances in Piezoelectric Transducers

Advances in Piezoelectric Transducers Book
Author : Farzad Ebrahimi
Publisher : BoD – Books on Demand
Release : 2011-11-25
ISBN : 9533079312
Language : En, Es, Fr & De

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Book Description :

The piezoelectric transducer converts electric signals into mechanical vibrations or vice versa by utilizing the morphological change of a crystal which occurs on voltage application, or conversely by monitoring the voltage generated by a pressure applied on a crystal. This book reports on the state of the art research and development findings on this very broad matter through original and innovative research studies exhibiting various investigation directions. The present book is a result of contributions of experts from international scientific community working in different aspects of piezoelectric transducers. The text is addressed not only to researchers, but also to professional engineers, students and other experts in a variety of disciplines, both academic and industrial seeking to gain a better understanding of what has been done in the field recently, and what kind of open problems are in this area.

Official Gazette of the United States Patent and Trademark Office

Official Gazette of the United States Patent and Trademark Office Book
Author : Anonim
Publisher : Unknown
Release : 1995
ISBN : 0987650XXX
Language : En, Es, Fr & De

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Book Description :

Download Official Gazette of the United States Patent and Trademark Office book written by , available in PDF, EPUB, and Kindle, or read full book online anywhere and anytime. Compatible with any devices.