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Neuromorphic heat transport effects in a molecular junction
1Center for Nonlinear Studies and Theoretical Division, Los Alamos National Laboratory, Los Alamos, New Mexico 87545, USA.
The Journal of Chemical Physics
|August 5, 2025
Summary
Molecular junctions exhibit heat transport hysteresis under time-periodic temperature gradients. This memory effect is crucial for developing novel thermal neuromorphic computers and advancing nanoscale electronics.
Area of Science:
- Molecular sciences
- Nanoscale energy transport
- Thermodynamics
Background:
- Nanoscale energy transport is crucial for electronics and materials science.
- Steady-state transport is well-understood, but time-dependent, far-from-equilibrium transport is not.
- Molecular junctions are key systems for studying nanoscale phenomena.
Purpose of the Study:
- Investigate energy transport in molecular junctions under time-periodic temperature gradients.
- Explore the phenomenon of heat transport hysteresis in nanoscale systems.
- Identify potential applications in thermal neuromorphic computing.
Main Methods:
- Nonequilibrium molecular dynamics simulations
- Stochastic thermodynamics
- Analysis of time-periodic temperature gradients
Main Results:
- Molecular junctions demonstrate heat transport hysteresis.
- Heat flux depends on both instantaneous temperature bias and its temporal history.
- A memory effect in heat transport was observed.
Conclusions:
- Heat transport hysteresis in molecular junctions is a key memory effect.
- Findings pave the way for designing thermal neuromorphic computers.
- Elucidates a pathway for realizing advanced nanoscale devices.
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