Electricity: measuring and testing – Electrostatic field
Patent
1991-08-23
1993-09-14
Strecker, Gerard R.
Electricity: measuring and testing
Electrostatic field
73597, 738655, 324 72, 324453, 324 711, G01R 2912, G01N 1502
Patent
active
052452905
ABSTRACT:
An apparatus for determining the particle charge and size distribution of particles in suspensions of arbitrary concentration is provided. The apparatus includes a cell for application of an unsteady electric field or an unsteady mechanical force across the suspension of at least two different frequencies for accelerating the particles. The resulting acoustic wave generated by application of the electric field applied to the electrodes, or the electrical response and the acoustic pressure at the electrodes generated by application of the mechanical force is measured. Transducers convert the mechanical forces to electrical forces.
REFERENCES:
patent: 3633415 (1972-01-01), Luce
patent: 4375673 (1983-03-01), Lewis et al.
patent: 4497208 (1985-02-01), Oja et al.
patent: 4552019 (1985-11-01), Freeman
patent: 4633714 (1987-01-01), Mazumder et al.
patent: 4679439 (1987-07-01), Culkin
patent: 4907453 (1990-03-01), Marlow et al.
"Measurement of Suspended Particles by Quasi-Elastic Light Scattering", M. K. Mazumber, et al., pp. 327-341, Dec. 1983.
"Electro-Acoustic effects in a dilute suspension of spherical particles", R. W. O'Brien, J. Fluid Mech. Dec. 1988, vol. 190, pp. 71-86.
"The electroacoustic equations for a colloidal suspension", R. W. O'Brien, J. Fluid Mech. Dec. 1990, vol. 212, pp. 81-93.
Cannon David W.
O'Brien Richard W.
Colloidal Dynamics
Do Diep
Kaplan Blum
Matec Applied Sciences, Inc.
Strecker Gerard R.
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