Results 81 to 90 of about 487,019 (287)

Ensemble Dependence of the Transient Fluctuation Theorem [PDF]

open access: yes, 2015
The Fluctuation Theorem gives an analytical expression for the probability of observing second law violating dynamical fluctuations, in nonequilibrium systems. At equilibrium statistical mechanical fluctuations are known to be ensemble dependent.
Searles, Debra J., Evans, Denis J.
core   +1 more source

Fluctuation-optimization theorem [PDF]

open access: yes
A fluctuation theorem relating the work to its optimal average work is presented. The function mediating the relation is increasing and convex, and depends on the switching time $τ$, driving strength $δλ/λ_0$, and protocol $g(t)$.
Nazé, Pierre
core   +1 more source

Generalized Fluctuation-Dissipation Theorem for Non-equilibrium Spatially Extended Systems

open access: yesFrontiers in Physics, 2020
The fluctuation-dissipation theorem (FDT) connecting the response of the system to external perturbations with the fluctuations at thermodynamic equilibrium is a central result in statistical physics. There has been effort devoted to extending the FDT in
Wei Wu, Jin Wang
doaj   +1 more source

Time-dependent fluctuation theorem [PDF]

open access: yesPhysical Review E, 2003
The fluctuation theorem (FT) is a generalization of the second law of thermodynamics that applies to small systems observed for short times. For thermostated systems it gives the probability ratio that entropy will be consumed rather than produced. In the present paper, we propose a version of the FT that applies to thermostated dissipative systems ...
Mittag, Emil, Evans, Denis
openaire   +3 more sources

Waveguide Photoactuators: Materials, Fabrication, and Applications

open access: yesAdvanced Robotics Research, EarlyView.
Waveguide photoactuators convert guided light into mechanical motion. Their tethered‐flexible design enables minimally invasive surgery and confined‐space robotics. This review aims to guide materials selection, device design, and system integration, accelerating the transition of waveguide photoactuators from laboratory prototypes to versatile ...
Minjie Xi   +4 more
wiley   +1 more source

Generalized Quantum Fluctuation Theorem for Energy Exchange [PDF]

open access: yes
The nonequilibrium fluctuation relation is a cornerstone of quantum thermodynamics. It is widely believed that the system-bath heat exchange obeys the famous Jarzynski-Wójcik fluctuation theorem. However, this theorem is established in the Born-Markovian
An, Jun-Hong, Wu, Wei
core   +1 more source

On the interpretation and significance of the fluctuation–dissipation theorem in infrared spectroscopy

open access: yesResults in Optics
In this paper we revisit the classical fluctuation–dissipation theorem with derivations and interpretations based on quantum electrodynamics (QED).
Sven Nordebo
doaj   +1 more source

Experiments in Stochastic Thermodynamics: Short History and Perspectives

open access: yesPhysical Review X, 2017
We summarize in this article the experiments which have been performed to test the theoretical findings in stochastic thermodynamics such as fluctuation theorem, Jarzynski equality, stochastic entropy, out-of-equilibrium fluctuation dissipation theorem ...
S. Ciliberto
doaj   +1 more source

Autonomous Navigation of Pollen‐Inspired Magnetic Microrobots for Biomedical Applications

open access: yesAdvanced Robotics Research, EarlyView.
A sunflower pollen‐inspired magnetic microrobot enables controlled rolling navigation in vessel‐like environments. Its open geometry reduces hydrodynamic drag, while vision‐based closed‐loop control, shortest‐path planning, and reinforcement learning support target‐reaching and maze navigation with microrobot‐scale accuracy, highlighting a route toward
Ali Anil Demircali   +6 more
wiley   +1 more source

Exchange Fluctuation Theorem for correlated quantum systems [PDF]

open access: yes, 2015
We extend the Exchange Fluctuation Theorem for energy exchange between thermal quantum systems beyond the assumption of molecular chaos, and describe the non-equilibrium exchange dynamics of correlated quantum states.
Rudolph, T   +5 more
core   +1 more source

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