Editing Glass transition

{{Stub-general}}
In the laboratory the '''glass transition''' is not a sharp transition; its properties change smoothly across <math>T_g</math>.
*<math>T_g</math> ''increases'' with a decrease in the observation time, <math>\tau_{\rm obs}</math>.
*<math>\Delta H =0</math>
*<math>\Delta V =0</math>
==Ideal glass transition temperature==
<ref>[http://dx.doi.org/10.1021/j100596a018 C. A. Angell and J. C. Tucker "Heat capacities and fusion entropies of the tetrahydrates of calcium nitrate, cadmium nitrate, and magnesium acetate. Concordance of calorimetric and relaxational ideal glass transition temperatures", Journal of Physical Chemistry '''78''' pp. 278 - 281 (1974)]</ref>
==Observation time==
<math>\tau_{\rm obs}</math>
==Intrinsic average structural relaxation time==
==Pressure dependence of glass transition temperature==
==See also==
*[[Gardner phase transition]]
*[[Kauzmann's paradox]]

==References==
<references/>
'''Related reading'''
*[http://dx.doi.org/10.1103/RevModPhys.78.953 Jeppe C. Dyre "The glass transition and elastic models of glass-forming liquids", Reviews of Modern Physics '''78''' 953 (2006)]
*[http://dx.doi.org/10.1063/1.2738471  Prabhat K. Gupta and John C. Mauro "The laboratory glass transition", Journal of Chemical Physics '''126''' 224504 (2007)]
*[http://dx.doi.org/10.1146/annurev.physchem.58.032806.104653 Vassiliy Lubchenko and Peter G. Wolynes "Theory of Structural Glasses and Supercooled Liquids", Annual Review of Physical Chemistry '''58''' pp. 235-266 (2007)]
*[http://dx.doi.org/10.1038/nmat2219 C. Patrick Royall, Stephen R. Williams, Takehiro Ohtsuka and  Hajime Tanaka "Direct observation of a local structural mechanism for dynamic arrest", Nature Materials '''7''' pp. 556-561 (2008)]
*[http://dx.doi.org/10.1063/1.2982172 Stephen R. Williams, Debra J. Searles, and Denis J. Evans "The glass transition and the Jarzynski equality", Journal of Chemical Physics  '''129''' 134504 (2008)]
*[http://dx.doi.org/10.1103/PhysRevLett.103.245701 Ning Xu, Thomas K. Haxton, Andrea J. Liu, and Sidney R. Nagel "Equivalence of Glass Transition and Colloidal Glass Transition in the Hard-Sphere Limit", Physical Review Letters '''103''' 245701 (2009)]
*[http://dx.doi.org/10.1063/1.3506841 Florent Krzakala and Lenka Zdeborová "On melting dynamics and the glass transition. I. Glassy aspects of melting dynamics", Journal of Chemical Physics '''134''' 034512 (2011)]
*[http://dx.doi.org/10.1063/1.3506843 Florent Krzakala and Lenka Zdeborová "On melting dynamics and the glass transition. II. Glassy dynamics as a melting process",  Journal of Chemical Physics '''134''' 034513 (2011)]
*[http://dx.doi.org/10.1063/1.3685510  Jürn W. P. Schmelzer "Kinetic criteria of glass formation and the pressure dependence of the glass transition temperature", Journal of Chemical Physics '''136''' 074512 (2012)]


[[category: Non-equilibrium thermodynamics]]