摘要
A single vortex is obtained in radio-frequency capacitive discharge in argon gas. The dust subsystem is confined in the horizontal plane with an asymmetrical saw structure placed on the lower electrode. The vortex rotates as a whole along the long side of the saw-teeth. Asymmetry of the saw structure plays an important role in the rotation of the vortex. Nonzero curl of the total force resulting from the local ion flow and the electric field in the plasma sheath could be attributed to the persistent rotation of vortex.
A single vortex is obtained in radio-frequency capacitive discharge in argon gas. The dust subsystem is confined in the horizontal plane with an asymmetrical saw structure placed on the lower electrode. The vortex rotates as a whole along the long side of the saw-teeth. Asymmetry of the saw structure plays an important role in the rotation of the vortex. Nonzero curl of the total force resulting from the local ion flow and the electric field in the plasma sheath could be attributed to the persistent rotation of vortex.
基金
Project supported by the National Natural Science Foundation of China(Grant Nos.11205044 and 11405042)
the Program for Young Principal Investigators of Hebei Province,China
the Natural Science Foundation of Hebei University,China(Grant No.2011JQ04)
the Natural Science Fund for Excellent Young Scholars of Hebei Province,China(Grant No.A2017201099)
the Midwest Universities Comprehensive Strength Promotion Project,China
