Process for generating periodic non-uniform electric field, and

Details Process for generating periodic non-uniform electric field, and Process for generating periodic non-uniform electric field, and

1975-06-23

1977-01-04

Tung, T.

Chemistry: electrical and wave energy

Processes and products

Electrostatic field or electrical discharge

204180R, 204299R, C25B 700, B01D 1302

Patent

active

040011020

ABSTRACT:
Polarizable particulate material, such as organic and inorganic colloidal particles such as small pieces of metal, oxides and the like, zwitterionic molecules, and even living organisms and viruses can be preferentially removed from a liquid by dielectrophoresis, by passing the liquid containing the polarizable particulate material to be removed over a ferroelectric apparatus which generates a periodic non-uniform electric field near the boundary between alternately polarized portions of the ferroelectric material. The periodic non-uniform electric field is generated by subjecting portions of the ferroelectric material to an alternating potential to alternately polarize the portions, while allowing other portions of the ferroelectric material to remain polarized in the same direction.

REFERENCES:
patent: 2555487 (1951-06-01), Haugaard et al.
patent: 3304251 (1967-02-01), Walker et al.
patent: 3478494 (1969-11-01), Lustenader et al.
patent: 3496701 (1970-02-01), Owe Berg
patent: 3687834 (1972-08-01), Candor

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