The Kauzmann temperature (TK) of a supercooled liquid is defined as the temperature at which the liquid entropy becomes equal to that of the crystal. The excess entropy, the difference between liquid and crystal entropies, is routinely used as a measure of the configurational entropy, whose vanishing signals the thermodynamic glass transition. The existence of the thermodynamic glass transition is a widely studied subject, and of particular recent interest is the role of dimensionality in determining the presence of a glass transition at a finite temperature. The glass transition in water has been investigated intensely and is challenging as the experimental glass transition appears to occur at a temperature where the metastable liquid is strongly prone to crystallization and is not stable. To understand the dimensionality dependence of the Kauzmann temperature in water, we study computationally bulk water (three-dimensions), water confined in the slit pore of the graphene sheet (two-dimensions), and water confined in the pore of the carbon nanotube of chirality (11,11) having a diameter of 14.9 Å (one-dimension), which is the lowest diameter where amorphous water does not always crystallize into nanotube ice in the supercooled region. Using molecular dynamics simulations, we compute the entropy of water in bulk and under reduced dimensional nanoscale confinement to investigate the variation of the Kauzmann temperature with dimension. We obtain a value of TK (133 K) for bulk water in good agreement with experiments [136 K (C. A. Angell, Science 319, 582–587 (2008) and K. Amann-Winkel et al., Proc. Natl. Acad. Sci. U. S. A. 110, 17720–17725 (2013)]. However, for confined water, in two-dimensions and one-dimension, we find that there is no finite temperature Kauzmann point (in other words, the Kauzmann temperature is 0 K). Analysis of the fluidicity factor, a measure of anharmonicity in the oscillation of normal modes, reveals that the Kauzmann temperature can also be computed from the difference in the fluidicity factor between amorphous and ice phases.
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28 April 2021
Research Article|
April 28 2021
Dimensionality dependence of the Kauzmann temperature: A case study using bulk and confined water
Special Collection:
Fluids in Nanopores
Mohd Moid
;
Mohd Moid
1
Department of Physics, Centre for Condensed Matter Theory, Indian Institute of Science
, Bangalore 560012, India
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Srikanth Sastry
;
Srikanth Sastry
2
Jawaharlal Nehru Centre for Advanced Scientific Research
, Bangalore 560064, India
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Chandan Dasgupta;
Chandan Dasgupta
1
Department of Physics, Centre for Condensed Matter Theory, Indian Institute of Science
, Bangalore 560012, India
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Tod A. Pascal
;
Tod A. Pascal
3
Department of Nanoengineering and Chemical Engineering, University of California San Diego
, La Jolla, California 92023, USA
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Prabal K. Maiti
Prabal K. Maiti
a)
1
Department of Physics, Centre for Condensed Matter Theory, Indian Institute of Science
, Bangalore 560012, India
a)Author to whom correspondence should be addressed: maiti@iisc.ac.in
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a)Author to whom correspondence should be addressed: maiti@iisc.ac.in
Note: This paper is part of the JCP Special Topic on Fluids in Nanopores.
J. Chem. Phys. 154, 164510 (2021)
Article history
Received:
February 15 2021
Accepted:
April 08 2021
Citation
Mohd Moid, Srikanth Sastry, Chandan Dasgupta, Tod A. Pascal, Prabal K. Maiti; Dimensionality dependence of the Kauzmann temperature: A case study using bulk and confined water. J. Chem. Phys. 28 April 2021; 154 (16): 164510. https://doi.org/10.1063/5.0047656
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