6 citations · 11 across the 8 of their papers we have counts for
8 papers
Geometric Formulation of Power-Efficiency Bounds in Carnot-like Engines
R. X. Zhai
We formulate the power-efficiency constraint of Carnot-like heat engines as a geometric optimization problem in the plane of normalized branch dissipations. In this plane, efficien…
Negative Differential Heat Conductivity in a Harmonic Chain Coupled to a Particle Reservoir
Simon Krekels, Christian Maes, Ion Santra +1
When coupling thermal baths at different temperatures, negative differential thermal conductivity is typically attributed to nonlinear interactions in the connecting medium. In thi…
Exact bound of power-efficiency trade-off in finite-time thermodynamic cycles
R. X. Zhai, Xin Yue, C. P. Sun
Power and efficiency are fundamental criteria for evaluating the performance of thermodynamic cycles. However, it is generally impossible to maximize both simultaneously. In partic…
Quantum Thermodynamic Integrability for Canonical and non-Canonical Statistics
Ruo-Xun Zhai, C. P. Sun
We extend the Carathéodory principle of the Second Law to quantum thermodynamics with energy levels depending on macroscopic variables, such as volume and magnetic field. This exte…
Power-Efficiency Constraint for Chemical Motors
Ruo-Xun Zhai, Hui Dong
Chemical gradients provide the primordial energy for biological functions by driving the mechanical movement of microscopic engines. Their thermodynamic properties remain elusive,…
Geodesic bound of the minimum energy expense to achieve membrane separation within finite time
Jin-Fu Chen, Ruo-Xun Zhai, C. P. Sun +1
To accomplish a task within limited operation time typically requires an excess expense of energy, whose minimum is of practical importance for the optimal design in various applic…
Experimental implementation of finite-time Carnot cycle
Ruo-Xun Zhai, Fang-Ming Cui, Yu-Han Ma +2
The Carnot cycle is a prototype of ideal heat engine to draw mechanical energy from the heat flux between two thermal baths with the maximum efficiency, dubbed as the Carnot effici…
Quantum Zeno Effect in Heisenberg Picture and Critical Measurement Time
Wu Wang, Ruo-Xun Zhai, C. P. Sun
Quantum Zeno effect is conventionally interpreted by the assumption of the wave-packet collapse, in which does not involve the duration of measurement. However, we predict duration…