Effects of particle-size ratio on jamming of binary mixtures

Details Effects of particle-size ratio on jamming of binary mixtures Effects of particle-size ratio on jamming of binary mixtures

2009-12-17

arxiv.org/abs/0912.3337v1

Soft Matter 6, 2944 (2010)

Physics

Condensed Matter

Soft Condensed Matter

5 pages and 4 figures, submitted to Soft Matter, special issue on Granular and Jammed Materials

Scientific paper

10.1039/b926696h

We perform a systematic numerical study of the effects of the particle-size ratio $R \ge 1$ on the properties of jammed binary mixtures. We find that changing $R$ does not qualitatively affect the critical scaling of the pressure and coordination number with the compression near the jamming transition, but the critical volume fraction at the jamming transition varies with $R$. Moreover, the static structure factor (density correlation) $S(k)$ strongly depends on $R$ and shows distinct long wave-length behaviors between large and small particles. Thus the previously reported behavior of $S(k)\sim k$ in the long wave-length limit is only a special case in the $R\to 1$ limit, and cannot be simply generalized to jammed systems with $R>1$.

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