Caging Dynamics in a Granular Fluid

by: PM Reis, RA Ingale, MD Shattuck

Physical Review Letters, Vol. 98, No. 18. (2007)

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Abstract

We report an experimental investigation of the caging motion in a uniformly heated granular fluid for a wide range of filling fractions, . At low the classic diffusive behavior of a fluid is observed. However, as is increased, temporary cages develop and particles become increasingly trapped by their neighbors. We statistically analyze particle trajectories and observe a number of robust features typically associated with dense molecular liquids and colloids. Even though our monodisperse and quasi-2D system is known to not exhibit a glass transition, we still observe many of the precursors usually associated with glassy dynamics. We speculate that this is due to a process of structural arrest provided, in our case, by the presence of crystallization.

@article{citeulike:2021334, abstract = {We report an experimental investigation of the caging motion in a uniformly heated granular fluid for a wide range of filling fractions, . At low the classic diffusive behavior of a fluid is observed. However, as is increased, temporary cages develop and particles become increasingly trapped by their neighbors. We statistically analyze particle trajectories and observe a number of robust features typically associated with dense molecular liquids and colloids. Even though our monodisperse and quasi-2D system is known to not exhibit a glass transition, we still observe many of the precursors usually associated with glassy dynamics. We speculate that this is due to a process of structural arrest provided, in our case, by the presence of crystallization.}, author = {Reis, P. M. and Ingale, R. A. and Shattuck, M. D. }, citeulike-article-id = {2021334}, doi = {http://dx.doi.org/10.1103/PhysRevLett.98.188301}, journal = {Physical Review Letters}, number = {18}, posted-at = {2007-11-30 02:40:25}, priority = {2}, publisher = {APS}, title = {Caging Dynamics in a Granular Fluid}, url = {http://dx.doi.org/10.1103/PhysRevLett.98.188301}, volume = {98}, year = {2007} }

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TY - JOUR ID - citeulike:2021334 L3 - citeulike-article-id:2021334 TI - Caging Dynamics in a Granular Fluid JF - Physical Review Letters VL - 98 IS - 18 PB - APS N2 - We report an experimental investigation of the caging motion in a uniformly heated granular fluid for a wide range of filling fractions, . At low the classic diffusive behavior of a fluid is observed. However, as is increased, temporary cages develop and particles become increasingly trapped by their neighbors. We statistically analyze particle trajectories and observe a number of robust features typically associated with dense molecular liquids and colloids. Even though our monodisperse and quasi-2D system is known to not exhibit a glass transition, we still observe many of the precursors usually associated with glassy dynamics. We speculate that this is due to a process of structural arrest provided, in our case, by the presence of crystallization. AU - Reis, PM AU - Ingale, RA AU - Shattuck, MD PY - 2007/// UR - http://dx.doi.org/10.1103/PhysRevLett.98.188301 ER -

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