Bandan Chakrabortty, G. C. Barker, Anita Mehta, J. M. Luck
We investigate the formation of complex bridges inside the vibrated dry granular media. While the size distribution of these macro-molecular structures shows strong dependency on the volume fraction, their shape and size descriptors are independent to the same. Similarities between the branched polymers and these macro-molecular objects prompted us to further investigate the variation of 'asphericity' and 'prolateness' of the complex bridges with their size. Our findings suggest, (a) asphericity is decreasing (more spherical) with the increase in size and (b) prolateness seems to remain constant. In addition, 'contraction factor' (defined in the line of polymer chemistry) decreases with the increase in volume fraction.
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http://arxiv.org/abs/1302.1120
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