Jamming transition in a highly dense granular system under vertical vibration.
The dynamics of the jamming transition in a three-dimensional granular system under vertical vibration is studied using diffusing-wave spectroscopy. When the maximum acceleration of the external vibration is large, the granular system behaves like a fluid, with the dynamic correlation function G (t) relaxing rapidly. As the acceleration of vibration approaches the gravitational acceleration g , the relaxation of G (t) slows down dramatically, and eventually stops. Thus the system undergoes a phase transition and behaves like a solid. Near the transition point, we find that the structural relaxation shows a stretched exponential behavior. This behavior is analogous to the behavior of supercooled liquids close to the glass transition.
Kim
Kipom
K
Department of Physics, Pusan National University, Busan, Korea.
Moon
Jong Kyun
JK
Park
Jong Jin
JJ
Kim
Hyung Kook
HK
Pak
Hyuk Kyu
HK