By D. S. Ballantine, Jr.,Robert M. White,S. J. Martin, et al.Elsevier|Elsevier Science||Academic PressAdult NonfictionScience, TechnologyLanguage(s): EnglishOn sale date: 13.05.2011Street date: 21.10.1996
Written by way of an interdisciplinary team of specialists from either and academia, Acoustic Wave Sensors offers an in-depth examine the present kingdom of acoustic wave units and the scope in their use in chemical, biochemical, and actual measurements, in addition to in engineering purposes. a result of inherent interdisciplinary functions of those units, this publication might be beneficial for the chemist and biochemist attracted to the use and improvement ofthese sensors for particular functions; engineer considering the layout and development of those units; the chemical engineer and the biotechnologist attracted to utilizing those units for method tracking and regulate; and the sensor neighborhood at large.
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Extra resources for Acoustic Wave Sensors. Theory, Design, & Physico-Chemical Applications
The modification that permitted it to be used for chemical sensing was the addition of a sorptive film on the crystal. This device was analyzed and improved by a succession of workers starting in the 1950s [3;4]. 2b). In this device, acoustic waves are generated and detected with the comblike conducting structures shown at each end of the device; a piezoelectric material in the device substrate converts energy between electrical and mechanical forms at the comblike structures. 2d). 2 Schematic sketches of the four types of acoustic sensors discussed in detail in this book: (a) Resonant quartz crystal like that used in electronic communications systems (after Lu ); (b) Surface-acoustic-wave delay line with selective absorptive coating (after Wohltjen and Dessy ); (c) Acoustic-plate-mode delay line made from quartz crystal (after Ricco and Martin ); (d) Thin-membrane flexural-plate-wave delay line made by microfabrication techniques from a silicon wafer.
R. Chemical Sensing with Solid-State Devices. Academic Press, New York, 1989. 3. Sauerbrey, G. Z. Phys.. 1959; 155:206. 4. King, W. , Jr. Anal. Chem.. 1964; 36:1735. 5. , Dessy, R. Anal. Chem.. 1979; 51:1458. 6. Lu, C. -S. J. Vac. Sci. Technol.. 1975; 12:578. 7. Ricco, A. , Martin, S. J. Appl. Phys. Letters. 1987; 50:1474. Chapter 2 Fundamentals of Acoustic Waves This chapter explores the properties of elastic waves, as well as their electrical excitation and detection in piezoelectric materials.
8) The stiffness matrix is also symmetric with respect to the interchange of reduced indices I and J so that for the most general solid, 21 distinct entries (6 diagonal and 15 triangular entries) are required to completely characterize the solid. Since the elastic properties reflect the symmetry of the material, as crystal symmetry increases the number of distinct elastic constants required to characterize the material decreases; for example, the number of independent constants is 6 for a trigonal material, 3 for a cubic material, and 2 for an isotropic material.