Electrohydrodynamic spraying system
First Claim
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1. An electrohydrodynamic spray system, comprising:
- an electrohydrodynamic spray apparatus havinga liquid inlet;
a spray nozzle in fluid communication with the liquid inlet, the spray nozzle comprising an opening downstream of the liquid inlet;
an inner electrode inside the spray nozzle;
an outer electrode external to the spray nozzle, and detached from the spray nozzle while the electrohydrodynamic spray apparatus is in operation, anda substrate positioned downstream of the spray nozzle,whereinan end of the inner electrode is completely inside the nozzle, and wherein said end of the inner electrode is in the form of a needle point that applies a field injection charge to a liquid flowing through the spray nozzle to produce nanodrops; and
wherein the spray nozzle is electrically insulated.
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Abstract
An electrohydrodynamic spray apparatus includes a liquid inlet and a spray nozzle in fluid communication with the liquid inlet, where the spray nozzle has an opening downstream of the liquid inlet. An inner electrode is situated at least partially inside the spray nozzle. An outer electrode is situated external to the spray nozzle and within about 100 mm of the opening of the nozzle. The electrohydrodynamic spray apparatus can be combined with a substrate to form an electrohydrodynamic spray system. The electrohydrodynamic spray apparatus or system can be used to form nanostructures such as nanodrops, nanoparticles and thin films.
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Citations
19 Claims
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1. An electrohydrodynamic spray system, comprising:
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an electrohydrodynamic spray apparatus having a liquid inlet; a spray nozzle in fluid communication with the liquid inlet, the spray nozzle comprising an opening downstream of the liquid inlet; an inner electrode inside the spray nozzle; an outer electrode external to the spray nozzle, and detached from the spray nozzle while the electrohydrodynamic spray apparatus is in operation, and a substrate positioned downstream of the spray nozzle, wherein an end of the inner electrode is completely inside the nozzle, and wherein said end of the inner electrode is in the form of a needle point that applies a field injection charge to a liquid flowing through the spray nozzle to produce nanodrops; and wherein the spray nozzle is electrically insulated. - View Dependent Claims (2, 3, 4, 5, 6, 7, 8, 9, 10, 11, 12, 13, 14, 15, 16, 17, 18, 19)
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Specification