Results 71 to 80 of about 5,971 (239)

An extended thermodynamics modeling of non-Fickian diffusion [PDF]

open access: yes, 2001
The problem of non-Fickian diffusion in a two-component mixture at uniform temperature is studied in the framework of extended irreversible thermodynamics (EIT).
Lebon, Georgy   +2 more
core   +1 more source

Polarization Dynamics in Ferroelectrics: Insights Enabled by Machine Learning Molecular Dynamics

open access: yesAdvanced Science, EarlyView.
Machine learning molecular dynamics is presented as a route to capture polarization switching, domain wall kinetics, topological polar textures, and polar mechanical coupling beyond the limits of conventional atomistic methods. This Perspective surveys recent progress and identifies key methodological directions, including long‐range electrostatics ...
Dongyu Bai   +3 more
wiley   +1 more source

Real‐Time Ferroelectric Domain Wall Dynamics During Electric Poling and Depoling

open access: yesAdvanced Science, EarlyView.
Real‐time visualization of domain wall dynamics during alternating‐current poling, direct‐current poling, and electrical depoling in relaxor‐PT ferroelectric single crystals reveals distinct field‐dependent pathways and strong path dependence. Instant polarized light microscopy uncovers reversible domain wall nucleation, motion, and reconfiguration ...
Ziqi Wang   +12 more
wiley   +1 more source

Nonequilibrium thermodynamics of the Kovacs effect [PDF]

open access: yesSoft Matter, 2010
We present a thermodynamic theory of the Kovacs effect based on the idea that the configurational degrees of freedom of a glass-forming material are driven out of equilibrium with the heat bath by irreversible thermal contraction and expansion. We assume that the slowly varying configurational subsystem, i.e. the part of the system that is described by
Bouchbinder, Eran, Langer, J. S.
openaire   +2 more sources

Programming Structural Symmetry and Emission in Low‐Dimensional Hybrid Perovskites via Time and Temperature

open access: yesAdvanced Science, EarlyView.
We demonstrate programmable structural symmetry and emission in benzylammonium‐based low‐dimensional hybrid perovskites. Continuous shaking transforms orthorhombic platelets into a lower‐symmetry monoclinic phase with broadband emission, whereas thermal activation drives the reverse pathways toward a higher‐symmetry configuration resembling the ...
Luiz G. Bonato   +7 more
wiley   +1 more source

Nonequilibrium Thermodynamics and Nose-Hoover Dynamics [PDF]

open access: yes, 2010
peer reviewedWe show that systems driven by an external force and described by Nose-Hoover dynamics allow for a consistent nonequilibrium thermodynamics description when the thermostatted variable is initially assumed in a state of canonical ...
Monnai, Takaaki   +3 more
core   +1 more source

Nonequilibrium molecular dynamics

open access: yesCondensed Matter Physics, 2005
Nonequilibrium Molecular Dynamics is a powerful simulation tool. Like its equilibrium cousin, nonequilibrium molecular dynamics is based on time-reversible equations of motion. But unlike conventional mechanics, nonequilibrium molecular dynamics provides
Wm.G.Hoover, C.G.Hoover
doaj   +1 more source

Programmable Chaotic Suspension Electrolysis for Scalable Manufacturing of Vacancy‐Tunable Electrolytic MnO2

open access: yesAdvanced Science, EarlyView.
Programmable chaotic suspension electrolysis bridges laboratory synthesis and industrial manufacturing of high‐performance MnO2 cathodes. This scalable strategy enables tunable oxygen vacancies and a robust γ/β tunnel framework, delivering superior electrochemical performance and thermal stability.
Zhihao Wu   +16 more
wiley   +1 more source

Second law of thermodynamics and the failure of rock materials [PDF]

open access: yes, 2001
The relation of nonequilibrium thermodynamics to some failure and fracture theories of rock mechanics is investigated. The basic concepts are given to connect failure to the properties of material equations describing the elastic properties.
Ván, Péter, Vásárhelyi, Balázs
core  

STUDIES IN NONEQUILIBRIUM QUANTUM THERMODYNAMICS [PDF]

open access: yes, 2019
The first part of this thesis focuses on verifying the quantum nonequilibrium work relation in the presence of decoherence. The nonequilibrium work relation is a generalization of the second law of thermodynamics that links nonequilibrium work ...
Smith, Andrew Maven
core   +1 more source

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