TY - JOUR
T1 - Divergent dynamics and the Kauzmann temperature in glass forming systems
AU - Martinez-Garcia, Julio Cesar
AU - Rzoska, Sylwester J.
AU - Drzozd-Rzoska, Aleksandra
AU - Martinez-Garcia, Jorge
AU - Mauro, John C.
N1 - Funding Information:
the new way of determining the apparent activation energy DEa(T) and then IDO(T), avoiding the biasing impact of t0 in the SA eq. (1), was introduced (see Supplementary information). It was supported by numerical filtering based on Savitzky-Golay principle23. This routine can yield non-biased values of DEa(T) and IDO(T) from t(T) or g(T) experimental data.
PY - 2014/6/4
Y1 - 2014/6/4
N2 - In the last decade the challenging analysis of previtreous behavior of relaxation time (Ï.,(T)) in ultraviscous low molecular weight liquids led to the conceptual shift of the glass transition physics toward theories not predicting a finite-temperature divergence. This "breakthrough" experimental finding was strengthened by the discovery that "dynamic "(i.e. from τ(T) fitting) and thermodynamic estimations of the ideal glass (Kauzmann) temperature do not match, what in fact questioned its existence. In this report, due to the novel way of analysis based on the transformation of τ(T) experimental data to the activation energy temperature index form, the clear prevalence of the finite-temperature divergence is proved. The obtained dynamic singular temperatures clearly coincide with thermodynamic estimations of the Kauzmann temperature, thus solving also the second mystery. The comprehensive picture was obtained due to the analysis of 55 experimental data-sets, ranging from low molecular weight liquids and polymers to liquid crystal and plastic crystals.
AB - In the last decade the challenging analysis of previtreous behavior of relaxation time (Ï.,(T)) in ultraviscous low molecular weight liquids led to the conceptual shift of the glass transition physics toward theories not predicting a finite-temperature divergence. This "breakthrough" experimental finding was strengthened by the discovery that "dynamic "(i.e. from τ(T) fitting) and thermodynamic estimations of the ideal glass (Kauzmann) temperature do not match, what in fact questioned its existence. In this report, due to the novel way of analysis based on the transformation of τ(T) experimental data to the activation energy temperature index form, the clear prevalence of the finite-temperature divergence is proved. The obtained dynamic singular temperatures clearly coincide with thermodynamic estimations of the Kauzmann temperature, thus solving also the second mystery. The comprehensive picture was obtained due to the analysis of 55 experimental data-sets, ranging from low molecular weight liquids and polymers to liquid crystal and plastic crystals.
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U2 - 10.1038/srep05160
DO - 10.1038/srep05160
M3 - Article
AN - SCOPUS:84902106539
SN - 2045-2322
VL - 4
JO - Scientific reports
JF - Scientific reports
M1 - 5160
ER -