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OverviewUltrasonic 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. Full Product DetailsAuthor: K Nakamura (Tokyo Institute of Technology, Japan)Publisher: Elsevier Science & Technology Imprint: Woodhead Publishing Ltd Volume: 29 Dimensions: Width: 15.60cm , Height: 4.00cm , Length: 23.40cm Weight: 1.280kg ISBN: 9781845699895ISBN 10: 1845699890 Pages: 722 Publication Date: 23 August 2012 Audience: College/higher education , Postgraduate, Research & Scholarly Format: Hardback Publisher's Status: Active Availability: Manufactured on demand We will order this item for you from a manufactured on demand supplier. Table of ContentsContributor contact details Woodhead Publishing Series in Electronic and Optical Materials Preface Part I: Materials and design of ultrasonic transducers Chapter 1: Piezoelectricity and basic configurations for piezoelectric ultrasonic transducers Abstract: 1.1 Introduction 1.2 The piezoelectric effect 1.3 Piezoelectric materials 1.4 Piezoelectric transducers 1.5 Summary, future trends and sources of further information Chapter 2: Electromagnetic acoustic transducers Abstract: 2.1 Introduction 2.2 Physical principles 2.3 Lorentz-force-type transducers 2.4 Magnetostriction-type transducers 2.5 Conclusion Chapter 3: Piezoelectric ceramics for transducers Abstract: 3.1 The history of piezoelectrics 3.2 Piezoelectric materials: present status Chapter 4: Thin-film PZT-based transducers Abstract: 4.1 Introduction 4.2 PZT deposition using the hydrothermal process 4.3 Applications using the bending and longitudinal vibration of the d31 effect 4.4 Thickness-mode vibration, d33 4.5 Epitaxial film 4.6 Conclusions Chapter 5: High-Curie-temperature piezoelectric single crystals of the Pb(In1/2Nb1/2)O3–Pb(Mg1/3Nb2/3)O3–PbTiO3 ternary system Abstract: 5.1 Introduction 5.2 PIMNT ceramics 5.3 PIMNT single crystals grown by the flux method 5.4 PIMNT single crystals grown by the Bridgman method 5.5 Recent research into PIMNT single crystals and their applications 5.6 Future prospects and tasks 5.7 Conclusions Part II: Modelling and characterisation of ultrasonic transducers Chapter 6: Modelling ultrasonic-transducer performance: one-dimensional models Abstract: 6.1 Introduction 6.2 Transducer performance expressed through the wave equation 6.3 Equivalent electrical circuit models 6.4 The linear systems model 6.5 Examples 6.6 Summary, future trends and sources of further information Chapter 7: The boundary-element method applied to microacoustic devices: zooming into the near field Abstract: 7.1 Introduction 7.2 The acoustic wave equation: shear horizontal vibrations 7.3 Construction of infinite-domain Green's functions 7.4 Near-field analysis 7.5 Normalization of the field variables 7.6 Determining the asymptotic expansion terms for Æž → 0 7.7 Future trends 7.8 Key references for further reading 7.9 Acknowledgements Chapter 8: Electrical evaluation of piezoelectric transducers Abstract: 8.1 Introduction 8.2 Equivalent electrical circuit 8.3 Electrical measurements 8.4 Characterization of piezoelectric transducers under high-power operation 8.5 Load test 8.6 Summary Chapter 9: Laser Doppler vibrometry for measuring vibration in ultrasonic transducers Abstract: 9.1 Introduction 9.2 Laser Doppler vibrometry for non-contact vibration measurements 9.3 Characterization of ultrasonic transducers and optimization of ultrasonic tools 9.4 Enhanced LDV designs for special measurements 9.5 Conclusion and summary Chapter 10: Optical visualization of acoustic fields: the schlieren technique, the Fresnel method and the photoelastic method applied to ultrasonic transducers Abstract: 10.1 Introduction 10.2 Schlieren visualization technique 10.3 Fresnel visualization method 10.4 Photoelastic visualization method Part III: Applications of ultrasonic transducers Chapter 11: Surface acoustic wave (SAW) devices Abstract: 11.1 Introduction 11.2 Interdigital transducers (IDTs) 11.3 Transversal SAW filter 11.4 SAW resonators 11.5 Conclusions Chapter 12: Airborne ultrasound transducers Abstract: 12.1 Introduction 12.2 Basic design principles 12.3 Transducer designs for use in air 12.4 Radiated fields in air 12.5 Applications 12.6 Future trends 12.7 Sources of further information and advice 12.8 Acknowledgements Chapter 13: Transducers for non-destructive evaluation at high temperatures Abstract: 13.1 Transducers for non-destructive evaluation at high temperatures 13.2 Sol-gel composite ultrasonic transducers 13.3 Structural-health monitoring demonstration 13.4 Process-monitoring demonstration 13.5 Conclusions Chapter 14: Analysis and synthesis of frequency-diverse ultrasonic flaw-detection systems using order statistics and neural network processors Abstract: 14.1 Introduction 14.2 Ultrasonic flaw-detection techniques 14.3 Neural network detection processor 14.4 Flaw-detection performance evaluation 14.5 System-on-a-chip implementation – a case study 14.6 Future trends 14.7 Conclusions 14.8 Further information Chapter 15: Power ultrasonics: new technologies and applications for fluid processing Abstract: 15.1 Introduction 15.2 New power ultrasonic technologies for fluids and multiphase media 15.3 Application of the new power ultrasonic technology to processing 15.4 Conclusions 15.5 Acknowledgements Chapter 16: Nonlinear acoustics and its application to biomedical ultrasonics Abstract: 16.1 Introduction 16.2 Basic aspects of nonlinear acoustic wave propagation and associated phenomena 16.3 Measurements of and advances in the determination of B/A 16.4 Advances in tissue harmonic imaging 16.5 Nonlinear acoustics in ultrasound metrology 16.6 Nonlinear wave propagation in hydrophone probe calibration 16.7 Nonlinear acoustics in therapeutic applications 16.8 Conclusions 16.9 Acknowledgements Chapter 17: Therapeutic ultrasound with an emphasis on applications to the brain Abstract: 17.1 Introduction and summary 17.2 Fundamentals of propagation and absorption of ultrasound 17.3 Acoustic attenuation as absorption plus scattering 17.4 Physical and chemical processes engendered by medical ultrasound 17.5 Bubble formation and growth 17.6 Inertial cavitation and associated material stresses 17.7 Mechanical index 17.8 Diagnostic ultrasound 17.9 Therapeutic ultrasound 17.10 Ultrasound-facilitated delivery of drugs and antibodies into the brain 17.11 Neuromodulation by ultrasound 17.12 Conclusion Chapter 18: Microscale ultrasonic sensors and actuators Abstract: 18.1 Introduction: ultrasonic horn actuators 18.2 Advantages of silicon-based technology 18.3 Silicon ultrasonic horns 18.4 Sensor integration and fabrication of silicon horns 18.5 Planar electrode characterization 18.6 Piezoresistive strain gauges 18.7 Applications: tissue penetration force reduction 18.8 Applications: cardiac electrophysiological measurement 18.9 Applications: microscale tissue metrology in testicular sperm extraction (TESE) surgery 18.10 Conclusions Chapter 19: Piezoelectric and fibre-optic hydrophones Abstract: 19.1 Introduction 19.2 General hydrophone considerations 19.3 Piezoelectric hydrophones 19.4 Fibre-optic hydrophones 19.5 Summary Chapter 20: Ultrasonic motors Abstract: 20.1 Introduction 20.2 Standing-wave ultrasonic motors 20.3 Traveling-wave ultrasonic motors 20.4 Ultrasonic motor performance 20.5 Summary and future trends IndexReviewsAuthor InformationKentaro Nakamura is a Professor in the Tokyo Institute of Technology’s Precision and Intelligence Laboratory, Japan. He has published extensively on a variety of aspects of ultrasonic devices and equipment as well as measurement engineering. Tab Content 6Author Website:Countries AvailableAll regions |