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  • Title: Gas flow driven by thermal creep in dusty plasma.
    Author: Flanagan TM, Goree J.
    Journal: Phys Rev E Stat Nonlin Soft Matter Phys; 2009 Oct; 80(4 Pt 2):046402. PubMed ID: 19905456.
    Abstract:
    Thermal creep flow (TCF) is a flow of gas driven by a temperature gradient along a solid boundary. Here, TCF is demonstrated experimentally in a dusty plasma. Stripes on a glass box are heated by laser beam absorption, leading to both TCF and a thermophoretic force. The design of the experiment allows isolating the effect of TCF. A stirring motion of the dust particle suspension is observed. By eliminating all other explanations for this motion, we conclude that TCF at the boundary couples by drag to the bulk gas, causing the bulk gas to flow, thereby stirring the suspension of dust particles. This result provides an experimental verification, for the field of fluid mechanics, that TCF in the slip-flow regime causes steady-state gas flow in a confined volume.
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