Method and apparatus for producing nanodrops and nanoparticles a

Details Method and apparatus for producing nanodrops and nanoparticles a Method and apparatus for producing nanodrops and nanoparticles a

1992-10-23

1994-09-06

Owens, Terry J.

Coating processes

Direct application of electrical, magnetic, wave, or...

Electrostatic charge, field, or force utilized

427483, 264 10, 118621, 118624, 361228, B05D 104, B05B 5035

Patent

active

053446763

ABSTRACT:
A method and apparatus for producing nanodrops which are liquid drops with diameters less than one micron and producing therefrom solid nanoparticles and uniform and patterned film deposits. A liquid precursor is placed in an open ended tube within which is a solid electrically conductive needle which protrudes beyond the open end of the tube. Surface tension of the liquid at the tube end prevents the liquid from flowing from the tube. Mutually repulsive electric charges are injected into the liquid through the needle, causing the surface tension to be overcome to produce a plurality of liquid jets which break up into nanodrops.

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Kim, K. et al., "Generation of charged drops of insulating liquids by electrostatic spraying," J. Appl. Phys., vol. 47, No. 5 (May 1976) pp. 1964-1969.
Woosley, J. et al., "Electrostatic Spraying of Insulating Liquids: H.sub.2 ", IEEE Trans. Ind. Appl., vol. IA-18, No. 3 (May/Jun. 1982) pp. 314-320.

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