Difference between revisions of "Spatial cooperativity in soft glassy flows"

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(New page: ==Reference== Goyon, J., Colin, A., Ovarlez, G., Ajdari, A., Bocquet, L., Nature 454 (2008). ==Keywords== spatial cooperativity, glass, velocity profile, shear stress, shear strain, Couet...)
 
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[[Image:dilatant_2.jpg |right| |200px| |thumb| Figure 2.]]
 
[[Image:dilatant_2.jpg |right| |200px| |thumb| Figure 2.]]
  
This paper deals with studying non-local effects at and above the glass transition in an emulsion.  A general feature of glassy materials is a strong nonlinear flow rule relating stress and strain.  This feature is no well-documented and poorly understood.  The authors develop a law governing flows of glassy materials, using a local velocity measurement technique to measure the local flow of a film of confined glassy material.
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A general feature of glassy materials is a strong nonlinear flow rule relating stress and strain.  This feature is no well-documented and poorly understood.  Many have tried to understand the glass transition by studying the dynamical heterogeneities in glass-forming materials, but Using a local velocity measurement technique, the authors measure the local flow of a film of confined glassy material.

Revision as of 00:14, 6 December 2009

Reference

Goyon, J., Colin, A., Ovarlez, G., Ajdari, A., Bocquet, L., Nature 454 (2008).

Keywords

spatial cooperativity, glass, velocity profile, shear stress, shear strain, Couette cell

Summary

Figure 1.
Figure 2.

A general feature of glassy materials is a strong nonlinear flow rule relating stress and strain. This feature is no well-documented and poorly understood. Many have tried to understand the glass transition by studying the dynamical heterogeneities in glass-forming materials, but Using a local velocity measurement technique, the authors measure the local flow of a film of confined glassy material.