Acoustic Wave Sensors: Theory, Design, & Physico-Chemical - download pdf or read online
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 team of specialists from either and academia, Acoustic Wave Sensors presents an in-depth examine the present nation of acoustic wave units and the scope in their use in chemical, biochemical, and actual measurements, in addition to in engineering purposes. as a result of the inherent interdisciplinary purposes of those units, this ebook should be worthwhile for the chemist and biochemist attracted to the use and improvement ofthese sensors for particular functions; engineer inquisitive about the layout and development of those units; the chemical engineer and the biotechnologist drawn to utilizing those units for approach tracking and keep watch over; and the sensor group at huge. Key positive factors* offers in-depth comparability and analyses of alternative different types of acoustic wave units* Discusses working ideas and layout issues* contains desk of correct fabric constants for fast reference* provides an in depth assessment of present makes use of of those units for chemical, biochemical, and actual measurements, and engineering functions
Read Online or Download Acoustic Wave Sensors: Theory, Design, & Physico-Chemical Applications (Applications of Modern Acoustics) (Applications of Modern Acoustics) PDF
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Additional info for Acoustic Wave Sensors: Theory, Design, & Physico-Chemical Applications (Applications of Modern Acoustics) (Applications of Modern Acoustics)
40, this is given by 1. 7) 44 3. , that obtained when Ps = 0. For Ps "~. 9) indicating that the fractional shift in resonant frequency is equal to the fractional change in mass contributed by the mass layer. 8 has been found to hold for mass fractions up to about 2% . Lqtoq) l/2 . 65 g/cm 3. 1 Hz, calculate the limit of mass resolution. 9, S = dfldps = -fol(pqh) = -57 Hz-cm2/~g. This means that for each 1/zg/cm 2 of mass accumulation, the resonant frequency will decrease by 57 Hz. 3 Hz)/(57 Hzcm2//zg) = 5 ng/cm 2.
2b) where N is an integer. 2a indicates that resonances occur when the crystal thickness hs is a multiple of half the acoustic wavelength A. 3) where/zq and pq are the shear stiffness and mass density, respectively. 2b indicates the frequencies at which the family of resonances can be excited, corresponding to various values of the mode index N. , N = 1, 3, 5 . . . 65 g/cm 3. 3 Transit of a shear wave, illustrating the resonant condition. 06 MHz. Having derived the condition for crystal resonance allows the displacement profile at resonance to be calculated.
The result is that changes of the medium that affect the wave energy density will cause changes of the wave velocity. 9: If a plane wave propagates in a medium in which the mass density changes, how is wave velocity affected? 49) Implicit differentiation of the varying quantities leads to AUK Ap = . 48, the fractional change in wave velocity is minus the fractional change in mass density of the medium: Av Ap = - --. Sl) 190 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.
Acoustic Wave Sensors: Theory, Design, & Physico-Chemical Applications (Applications of Modern Acoustics) (Applications of Modern Acoustics) 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