Journal article
Determination of yield stress of 2D (Yukawa) dusty plasma
Physics of plasmas, Vol.24(10), p.103702
10/2017
DOI: 10.1063/1.4994840
Abstract
Elastic and plastic deformations of a two-dimensional (2D) dusty plasma crystal under shear stresses are investigated using a numerical simulation. Our simulation mimics experiments that start with a crystal that is then manipulated by a pair of laser beams separated by a gap. In a pair of rectangular regions, we apply two equal but oppositely directed forces, to induce a shear deformation in the gap between. These external forces are increased incrementally to examine the elastic behavior, plasticity, and liquid flows. In the low-force elastic limit, a measurement of the shear modulus is obtained, which agrees with a theoretical value based on a sound speed. For larger forces resulting in plastic deformation, we determine the yield stress, which is found to agree with a common theoretical model for the critical yield stress, after accounting for the dimensionality for 2D.
Details
- Title: Subtitle
- Determination of yield stress of 2D (Yukawa) dusty plasma
- Creators
- Bin Liu - University of IowaJ Goree - University of Iowa
- Resource Type
- Journal article
- Publication Details
- Physics of plasmas, Vol.24(10), p.103702
- DOI
- 10.1063/1.4994840
- ISSN
- 1070-664X
- eISSN
- 1089-7674
- Number of pages
- 6
- Grant note
- U.S. Department of Energy (DOE) (http://dx.doi.org/10.13039/100000015) National Aeronautics and Space Administration (NASA) (http://dx.doi.org/10.13039/100000104)
- Language
- English
- Date published
- 10/2017
- Academic Unit
- Physics and Astronomy; Mechanical Engineering
- Record Identifier
- 9984199823702771
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