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24 Φεβ 2012 · A piezoelectric transducer (also known as a piezoelectric sensor) is a device that uses the piezoelectric effect to measure changes in acceleration, pressure, strain, temperature or force by converting this energy into an electrical charge.
Piezoelectric thin films can be deposited on semiconductor platforms (through a number of methods such as atomic-layer-deposition, sputtering, chemical vapor deposition (CVD), etc.) processes. Examples: aluminum nitride (AlN), zinc oxide (ZnO), lead zirconate titanate (PZT).
Figure 1.1 (a) The direct piezoelectric effect provides an electric charge upon application of a mechanical stress, whereas (b) the converse piezoelectric effect describes the situation where strain develops under an applied electric field.
This report discusses the basic concepts of piezoelectric transducers used as sensors and two circuits commonly used for signal conditioning their output. Contents
a basic introduction to piezoelectricity. It begins with a dis-cussion of background a. d applications of piezoelectric materials. We then present the linear theory of piezoelectricity, functionally graded piezoelectric materi-als(FGPM), and fundamental knowledg. 1.1 Background. ates an electric charge (see Fig. 1.1(a)). This effect is usua.
piezoelectric crystals. Piezoelectric ceramics are more versatile in that their physical, chemical, and piezoelectric characteristics can be tailored to specific applications. Piezoceramic materials can be manufactured in almost any shape or size, and the mechanical and electrical axes of the
Basic concepts of piezoelectricity are presented in Chap. 1 along with an introduction into the field of microgravimetric sensors; appendices A and B, at the end of the book, include fundamental concepts of electrostatics
