Dielectric particle injector for material processing

Details Dielectric particle injector for material processing Dielectric particle injector for material processing

1991-09-26

1992-11-10

Griffin, Donald A.

Electricity: electrical systems and devices

Electric charging of objects or materials

346159, B05B 500, G01D 1500

Patent

active

051629690

ABSTRACT:
A device for use as an electrostatic particle or droplet injector is disclosed which is capable of injecting dielectric particles or droplets. The device operates by first charging the dielectric particles or droplets using ultraviolet light induced photoelectrons from a low work function material plate supporting the dielectric particles or droplets, and then ejecting the charged particles or droplets from the plate by utilizing an electrostatic force. The ejected particles or droplets are mostly negatively charged in the preferred embodiment; however, in an alternate embodiment, an ion source is used instead of ultraviolet light to eject positively charged dielectric particles or droplets.

REFERENCES:
patent: 4255777 (1981-03-01), Kelly
patent: 4748043 (1988-05-01), Seaver et al.
patent: 4918468 (1990-04-01), Miekka et al.

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