Dynamic Behavior of Dust Flow with Velocity Shear in RF Plasma
نویسندگان
چکیده
We have investigated dynamic behavior of a dust flow with velocity shear in RF plasmas. In this study, neutral drag force by the neutral gas ejected from small nozzles is used for driving directional dust flows with velocity shear. The strength of the velocity shear can be controlled over a wide range by adjusting the direction of the nozzles and the flow rate of the neutral gas. The dust particles flowing a straight channel generate many tiny vortices in the contact region between forward and backward dust flows. Complicated behaviors were observed in the dust flow when a velocity shear was enhanced by controlling the gas flow velocity.
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