ABSTRACT
The process of drop ejection is not as simple as taking a fluid chamber with a small hole and pressurizing it enough for fluid to start emerging from the ejection nozzle hole. Attempting to eject a drop in this manner would not result in the ejection of a microdrop but rather in fluid accumulating at the aperture hole, spreading out on the surface, and increasing in area and volume until a macroscopic drop similar in size to a water faucet drop breaks off by gravity. A higher, steady pressure would result in a continuous stream of fluid being pushed out, ultimately breaking up into randomly sized droplets.
