Arrest of Flow and Emergence of Activated Processes at the Glass Transition of a Suspension of Particles with Hard Spherelike Interactions

W. van Megen, V. A. Martinez, G. Bryant

Research output: Contribution to journalArticlepeer-review


By combining aspects of the coherent and self-intermediate scattering functions, we show that the arrest of particle number density fluctuations spreads from the position of the main structure factor peak. We propose that this arrest impairs the system's ability to respond to diffusing momentum currents, leading to an enhanced resistance to flow. From the stretching of the coherent intermediate scattering functions in the glass, we read a manifestation of the undissipated thermal energy-the source of the ergodicity restoring processes that short-circuit the sharp transition to a perfect glass.

Original languageEnglish
Article number168301
Pages (from-to)-
Number of pages4
JournalPhysical Review Letters
Issue number16
Publication statusPublished - 24 Apr 2009



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