P
Prabhat K. Gupta
Researcher at Ohio State University
Publications - 92
Citations - 4364
Prabhat K. Gupta is an academic researcher from Ohio State University. The author has contributed to research in topics: Glass transition & Residual entropy. The author has an hindex of 29, co-authored 92 publications receiving 3959 citations. Previous affiliations of Prabhat K. Gupta include The Catholic University of America & Owens Corning.
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Viscosity of glass-forming liquids.
TL;DR: This work presents a model offering an improved description of the viscosity–temperature relationship for both inorganic and organic liquids using the same number of parameters as VFT and AM, and casts doubt on the existence of a Kauzmann entropy catastrophe and associated ideal glass transition.
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Structural relaxation in vitreous materials
Cornelius T. Moynihan,Pedro B. Macedo,C. J. Montrose,Prabhat K. Gupta,M. A. DeBolt,J. F. Dill,B. E. Dom,P. W. Drake,A. J. Easteal,P. B. Elterman,R. P. Moeller,H. Sasabe,J. A. Wilder +12 more
TL;DR: In this paper, the second derivatives of Gibbs free energy are defined for equilibrium liquid and glass, and the time dependence of liquid properties due to the structural relaxation is shown schematically for the isobaric response of enthalpy to temperature changes.
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Composition dependence of glass transition temperature and fragility. I. A topological model incorporating temperature-dependent constraints.
Prabhat K. Gupta,John C. Mauro +1 more
TL;DR: An analytical expression is derived for the scaling of glass transition temperature and fragility in the binary Ge(x)Se(1-x) system with temperature-dependent constraints that freeze in as the system is cooled from high temperature.
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Composition dependence of glass transition temperature and fragility. II. A topological model of alkali borate liquids.
TL;DR: A new topological modeling approach is developed that enables accurate prediction of the scaling of both glass transition temperature and fragility with composition and reveals a natural explanation for the presence of the constant T(g) regime observed in alkali borate systems.
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Prigogine–Defay ratio for systems with more than one order parameter
TL;DR: In this paper, the authors derived the Prigogine-Defay ratio for systems whose states need to be specified in terms of a number of order parameters by considering the conditions of tangency of the equilibrium free energy surface and the free energy surfaces for constant values of the order parameters.