Physics – Condensed Matter – Soft Condensed Matter
Scientific paper
2012-04-02
Physical Review Letters 108, 135005 (2012)
Physics
Condensed Matter
Soft Condensed Matter
5 pages, 6 figures
Scientific paper
The microstructure of a strongly coupled liquid undergoing a shear flow was studied experimentally. The liquid was a shear melted two-dimensional plasma crystal, i.e., a single-layer suspension of micrometer-size particles in a rf discharge plasma. Trajectories of particles were measured using video microscopy. The resulting microstructure was anisotropic, with compressional and extensional axes at around $\pm 45^{\circ}$ to the flow direction. Corresponding ellipticity of the pair correlation function $g({\bf r})$ or static structure factor $S(\bf{k})$ gives the (normalized) shear rate of the flow.
Ivlev Alexei V.
Morfill Gregor E.
Nosenko V.
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