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Increasing thermal rectification: effects of long-range interactions.

Emmanuel Pereira1, Ricardo R Avila

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Increasing interparticle interaction range amplifies thermal conductivity and enhances thermal rectification in graded materials. This research offers solutions for developing efficient thermal diodes for practical applications.

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Area of Science:

  • Condensed Matter Physics
  • Materials Science
  • Thermodynamics

Background:

  • Heat flow is governed by interparticle interactions.
  • Thermal diodes are crucial for thermal management but face challenges with efficiency and scalability.
  • Graded materials exhibit thermal rectification phenomena.

Purpose of the Study:

  • To investigate the impact of interparticle interaction range on heat flow.
  • To explore the potential of long-range interactions in enhancing thermal rectification.
  • To identify suitable materials for fabricating efficient thermal diodes.

Main Methods:

  • Theoretical study of heat transport phenomena.
  • Analysis of interparticle interaction effects in graded systems.
  • Investigating thermal conductivity and rectification in models with varying interaction ranges.

Main Results:

  • Increasing interaction range amplifies thermal conductivity.
  • Long-range interactions significantly boost rectification power in graded systems.
  • The decay of rectification with system size is mitigated by long-range interactions.

Conclusions:

  • Graded materials with long-range interactions are promising for thermal diode applications.
  • Interparticle interaction range is a key parameter for optimizing thermal transport.
  • This work provides a pathway for the practical fabrication of thermal diodes.