Dynamic structure factors of a dense mixture

Details Dynamic structure factors of a dense mixture Dynamic structure factors of a dense mixture

2005-05-22

arxiv.org/abs/cond-mat/0505540v1

Physical Review E, Vol 49, 3504 (1994)

Physics

Condensed Matter

Soft Condensed Matter

Scientific paper

10.1103/PhysRevE.49.3504

We compute the dynamic structure factors of a dense binary liquid mixture. These describe dynamics on molecular length scales, where structural relaxation is important. We find that the presence of a few large particles in a dense fluid of small particles slows down the dynamics considerably. We also observe a deep narrowing of the spectrum for a disordered mixture composed of a nearly equal packing of the two species. In contrast, a few small particles diffuse easily in the background of a dense fluid of large particles. We expect our results to describe neutron scattering from a dense mixture.

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