tailieunhanh - PIEZOELECTRIC MATERIALS AND DEVICES- PRACTICE AND APPLICATIONS

Piezoelectricity from the Greek word "piezo" means pressure electricity. Certain crystalline substances generate electric charges under mechanical stress and conversely experience a mechanical strain in the presence of an electric field. The piezoelectric effect was discovered in some naturally occurring materials in the 1880s. However it was not until the Second World War that man-made polycrystalline ceramic ma‐ terials were produced that also showed piezoelectric properties. Quartz and other natural crystals found application in microphones, accelerometers and ultrasonic transducers, whilst the advent of. | PIEZOELECTRIC MATERIALS AND DEVICES- PRACTICE AND APPLICATIONS Edited by Farzad Ebrahimi Piezoelectric Materials and Devices- Practice and Applications http 45936 Edited by Farzad Ebrahimi Contributors Toshio Ogawa Vahid Mohammadi Saeideh Mohammadi Fereshteh Barghi Saeed Assarzadeh Sebastien Grondel Christophe Delebarre Andrzej Buchacz Andrzej Wróbel Sonia Djili Farouk Benmeddour Emmanuel Moulin Jamal Assaad Farzad Ebrahimi Published by InTech Janeza Trdine 9 51000 Rijeka Croatia Copyright 2013 InTech All chapters are Open Access distributed under the Creative Commons Attribution license which allows users to download copy and build upon published articles even for commercial purposes as long as the author and publisher are properly credited which ensures maximum dissemination and a wider impact of our publications. After this work has been published by InTech authors have the right to republish it in whole or part in any publication of which they are the author and to make other personal use of the work. Any republication referencing or personal use of the work must explicitly identify the original source. Notice Statements and opinions expressed in the chapters are these of the individual contributors and not necessarily those of the editors or publisher. No responsibility is accepted for the accuracy of information contained in the published chapters. The publisher assumes no responsibility for any damage or injury to persons or property arising out of the use of any materials instructions methods or ideas contained in the book. Publishing Process Manager Danijela Duric Technical Editor InTech DTP team Cover InTech Design team First published February 2013 Printed in Croatia A free online edition of this book is available at Additional hard copies can be obtained from orders@ Piezoelectric Materials and Devices- Practice and Applications Edited by Farzad Ebrahimi p. cm. ISBN 978-953-51-1045-3 INTECH open .