string air degassing

It it this?

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I think what you're looking for is also referred to as thin-film degassification. The basic idea is to use some mechanical means to cause the liquid to form a thin-enough film or strand that entrained air is forced to form bubbles that can then overcome the surface tension of the material. Slinger degassers use this principle. The effect is readily observable in honey or molasses (just let some drizzle off the end of a spoon and watch the air bubbles come to the surface and pop as the "thread" stretches) or when spreading something like peanut brittle on a baking pan. Hope this helps.