Fluid sprinkling – spraying – and diffusing – With means to vibrate or jiggle discharge
Reexamination Certificate
2005-04-05
2005-04-05
Denion, Thomas (Department: 3748)
Fluid sprinkling, spraying, and diffusing
With means to vibrate or jiggle discharge
C239S102200, C239S086000, C239S589100, C422S105000, C422S930000, C073S001740, C073S863320, C073S864010, C073S864220, C347S046000, C347S047000
Reexamination Certificate
active
06874699
ABSTRACT:
Devices and methods for depositing fluids on substrates in patterns of spots, lines, or other features use a nozzle, which is preferably configured similarly to a micropipette, having a piezoelectric crystal or other ultrasonic actuator coupled to one of its sides. The nozzle may be charged via capillary action by dipping it into a well containing the fluid to be deposited, and may then be positioned over a desired area of a substrate, at which point activation of the ultrasonic actuator at ultrasonic frequencies will eject the fluid onto the substrate. The needle may subsequently be dipped into a well of rinsing fluid for cleaning. Spots or lines on the order of 5 micrometers width may be generated, making the invention particularly suitable for use in biological applications such as microarray production and in microelectronics applications such as the printing of organic circuitry.
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Lagally Max G.
Lal Amit
Larson Bradley James
Lee Chung Hoon
Denion Thomas
DeWitt Ross & Stevens S.C.
Fieschko, Esq. Craig A.
Wisconsin Alumni Research Foundation
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