Results 51 to 60 of about 7,760 (253)
Multimodal Data‐Driven Microstructure Characterization
Advanced Engineering Materials, EarlyView.A self‐consistent autonomous workflow for EBSP‐based microstructure segmentation by integrating PCA, GMM clustering, and cNMF with information‐theoretic parameter selection, requiring no user input. An optimal ROI size related to characteristic grain size is identified.
Qi Zhang +4 more
wiley +1 more source
The Fluctuation Theorem and Its Practical Limitations: A Numerical Example
DynamicsThe Fluctuation Theorem establishes a relationship between microscopic reversibility and macroscopic irreversible phenomena, such as dissipation. In this short paper, we present an elementary derivation of this theorem within the framework of stochastic ...
Fernando C. Pérez-Cárdenas
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Quantum Thermodynamics with Degenerate Eigenstate Coherences
Entropy, 2016 We establish quantum thermodynamics for open quantum systems weakly coupled to their reservoirs when the system exhibits degeneracies. The first and second law of thermodynamics are derived, as well as a finite-time fluctuation theorem for mechanical ...
Gregory Bulnes Cuetara +2 more
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Work fluctuation theorem for a Brownian particle in a nonconfining potential
Physical Review Research, 2021 Using the Feynman-Kac formula, a work fluctuation theorem for a Brownian particle in a nonconfining potential, e.g., a potential well with finite depth, is derived.
Christoph Streißnig, Holger Kantz
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Advanced Functional Materials, EarlyView.Programmable 2D magnetic clusterphenes are realized through a ligand‐mediated cluster‐assembly strategy. Direct linking of magnetic superatomic clusters enhances electron delocalization and symmetry breaking, enabling the concurrent strengthening of magnetic exchange interactions and spin–orbit coupling.
Junxiang Fu +13 more
wiley +1 more source
Fluctuation theorems for a molecular refrigerator [PDF]
Physical Review E, 2007 We extend fluctuation theorems to a molecular refrigeration system that consists of Brownian particles in a heat bath under feedback control of their velocities. Such control can actively remove heat from the bath due to an entropy-pumping mechanism [Phys. Rev. Lett. 93, 120602 (2004)].
Kyung Hyuk, Kim, Hong, Qian
openaire +2 more sources
Advanced Functional Materials, EarlyView.Effective control over the crystalline contact plane and microstructure of a naphthalenediimide‐bithiazole copolymer enables high‐performance n‐type thermoelectrics. While rubbing alignment induces a detrimental edge‐on orientation, subsequent solvent vapor‐induced re‐orientation facilitates a favorable mixed face‐on/edge‐on morphology.
Suhao Wang +13 more
wiley +1 more source
Fluctuation Theorems for Heat Exchanges between Passive and Active Baths
EntropyIn addition to providing general constraints on probability distributions, fluctuation theorems allow us to infer essential information on the role played by temperature in heat exchange phenomena.
Massimiliano Semeraro +2 more
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Focus on nonequilibrium fluctuation relations: from classical to quantum
New Journal of Physics, 2015 The fluctuation dissipation theorem is at the heart of equilibrium statistical mechanics. For a system away from thermal equilibrium, generalized nonequilibrium fluctuation relations have been found in recent years.
Dario Bercioux +3 more
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On fluctuating momentum exchange in idealised models of air–sea interaction [PDF]
Nonlinear Processes in Geophysics, 2019 The dynamics of three local models, for momentum transfer at the air–sea interface, is compared. The models differ by whether or not the ocean velocity is included in the shear calculation applied to the ocean and the atmosphere.
A. Wirth
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