| 摘要 |
An acoustic droplet emitter which a liquid level control plate has a lip in intimate contact with the free surface of a liquid is constructed. The liqui d level control plate also has an effective aperture diameter at the exit edge of th e plate which is larger than the effective aperture diameter at the lip. This reduces the pressure sensitivity of the free surface of the liquid and allow s for the free surface of the liquid to be effectively pinned at the bottom surfac e of liquid level control plate for wider variations in pressure than using conventional methods.
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