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Energy transport between heat baths with oscillating temperatures
Renai Chen1, Tammie Gibson2, Galen T Craven2
1Theoretical Division and Center for Nonlinear Studies, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
Physical Review. E
|September 19, 2023
Summary
Oscillating temperatures can enhance energy transport in nanoscale systems, offering a new way to control energy flow and storage in molecular devices. This dynamic approach shows potential for advanced nanosystem applications.
Area of Science:
- Physics
- Nanotechnology
- Statistical Mechanics
Background:
- Energy transport is crucial for many systems.
- Time-periodic temperature gradients can enhance thermal conductivity at macroscales.
Purpose of the Study:
- Theoretically examine energy transport in a nanoscale model with oscillating temperatures.
- Investigate the impact of time-periodic temperature gradients on thermal conductivity.
Main Methods:
- Applied a stochastic Langevin framework to model a particle connecting two heat baths.
- Derived analytical expressions for energy flux in free and harmonic potential cases.
Main Results:
- Temperature oscillations induce complex energy transport hysteresis.
- Dynamical effects significantly influence energy flux.
Conclusions:
- Time-periodic temperature modulations offer a novel method for controlling energy storage and release.
- Potential applications in molecular devices and nanosystems.
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