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19 mar 2022 · However, a team of Penn State researchers has come up with a theory to explain and then predict it: Zentropy. Zentropy is a play on entropy, a concept central to the second law of thermodynamics that expresses the measure of the disorder of a system that occurs over a period of time when there is no energy applied to keep order in ...
22 set 2023 · In ferroelectrics, the configuration of electric dipoles in the material can change the direction of polarization. The researchers applied zentropy to predict the phase transitions in lead titanate, including identifying three types of possible configurations in the material.
3 feb 2022 · The present zentropy theory provides a thermodynamic framework for mechanistic understanding of thermal expansion and has the potential to predict anomalies of other physical properties such as bulk modulus, heat capacity, and the order-disorder transition temperature in terms of the second derivatives of free energy for discovering ...
11 ago 2023 · Systems in the universe trend toward disorder, with only applied energy keeping the chaos at bay. The concept is called entropy, and examples can be found everywhere: ice melting, campfire burning ...
- Science X
14 lug 2021 · Zentropy Theory for Positive and Negative Thermal Expansions. Zi-Kui Liu, Yi Wang, Shun-Li Shang. It has been observed in both natural and man-made materials that volume sometimes decreases with increasing temperature.
- Zi-Kui Liu, Yi Wang, Shun-Li Shang
- 2021
The zentropy theory provides a nested form for configurational entropy enabling multiscale modeling to account for disorder and fluctuations from the electronic scale based on quantum mechanics to the experimental scale based on statistical mechanics using free energies of individual configurations rather than their total energies in standard ...
23 mar 2022 · A new theory of entropy called Zentropy can predict the change in volume of a material as a function of temperature at a multiscale level.
