Acoustic Wave Sensors: Theory, Design and Physico-Chemical by D. S. Ballantine Jr., Robert M. White, S. J. Martin,

By D. S. Ballantine Jr., Robert M. White, S. J. Martin, Antonio J. Ricco, E. T. Zellers, G. C. Frye, H. Wohltjen, Moises Levy, Richard Stern

Written by way of an interdisciplinary staff of specialists from either and academia, Acoustic Wave Sensors offers an in-depth examine the present country of acoustic wave units and the scope in their use in chemical, biochemical, and actual measurements, in addition to in engineering functions. as a result of inherent interdisciplinary purposes of those units, this booklet should be helpful for the chemist and biochemist drawn to the use and improvement ofthese sensors for particular functions; engineer fascinated by the layout and development of those units; the chemical engineer and the biotechnologist attracted to utilizing those units for technique tracking and keep watch over; and the sensor group at large.

  • Provides in-depth comparability and analyses of alternative different types of acoustic wave devices
  • Discusses working rules and layout considerations
  • Includes desk of appropriate fabric constants for fast reference
  • Presents an intensive evaluate of present makes use of of those units for chemical, biochemical, and actual measurements, and engineering applications

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Extra resources for Acoustic Wave Sensors: Theory, Design and Physico-Chemical Applications (Applications of Modern Acoustics)

Example text

9: If a plane wave propagates in a medium in which the mass density changes, how is wave velocity affected? sl) v0 P0" The preceding analysis will be used extensively in Chapter 3 to derive relations between mass accumulation and wave velocity for acoustic modes other than plane waves. Next, the effect on wave propagation of power dissipation in a lossy medium is considered. From conservation of energy, the power dissipated by the wave I'd (power/volume) must be balanced by a reduction in power transmitted by the wave P.

1 in a cubic material. 1 it was found that Sll = kh. In reduced notation, SI = kh, while $2 through $6 are all zero. 9) c44 0 0 c44 0 0 C44 / / Performing the matrix multiplication, Ti = cl iSl = cl ikh, I"2 = cl2Sl = cl2kh, and T3 = cl2Si = cl2kh, while all other entries are zero. 1. 1. It is this tendency for a material to transmit strains in one dimension to strains in the other dimension that necessitates a tensoriai stress-strain relation. 1 Wave Propagation in an Elastic Medium 1-9 scribes the propagation of plane acoustic waves in a non-piezoelectric solid.

53) OP = -2aP. 55 indicates the relationship between wave attenuation and power dissipation in the medium: attenuation is one-half the ratio of power dissipated to power transmitted by the wave. Note that in the derivations of this section, velocity and attenuation changes depend on ratios of energy and power, not on absolute levels. Consequently, in the small-signal limit, velocity and attenuation changes are independent of wave amplitude. It will be seen in Chapter 3 that many perturbations affect wave propagation.

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