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Nonreciprocal Thermal Material by Spatiotemporal Modulation.

Daniel Torrent1,2, Olivier Poncelet3, Jean-Chirstophe Batsale3

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Summary
This summary is machine-generated.

Materials with spatiotemporal modulation exhibit nonreciprocal thermal properties due to an internal convectionlike term. This discovery is key for designing advanced thermal diodes and heat flow control devices.

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Area of Science:

  • Physics
  • Materials Science
  • Thermodynamics

Background:

  • Understanding thermal transport in materials is crucial for technological advancements.
  • Spatiotemporal modulation of material properties presents unique thermal behaviors.
  • Nonreciprocity in heat flux control is a significant area of research.

Purpose of the Study:

  • To investigate the thermal properties of materials with spatiotemporal modulation.
  • To explore the nonreciprocal heat flux behavior in such materials.
  • To present an effective medium description for these modulated materials.

Main Methods:

  • Theoretical study of thermal properties under spatiotemporal modulation.
  • Development of an effective medium description.
  • Numerical simulations to validate the theoretical model and observed properties.

Main Results:

  • Materials with spatiotemporal modulation exhibit an internal convectionlike term.
  • This term induces nonreciprocal thermal properties, affecting heat flux directionality.
  • The effective medium description accurately models the modulated material's behavior.

Conclusions:

  • Modulated materials demonstrate nonreciprocal thermal transport.
  • These materials are promising for developing thermal diodes and advanced heat flow control devices.
  • The findings have implications for thermal management across various scales.