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Simulation, Fabrication and Characterization of THz Metamaterial Absorbers

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Thermal Rectification in Modularly Designed Bulk Metamaterials.

Hongying He¹, Weixiang Peng¹, Hortense Le Ferrand^1,2

¹School of Mechanical and Aerospace Engineering, Nanyang Technological University, 50 Nanyang Avenue, Singapore, 639798, Singapore.

Advanced Materials (Deerfield Beach, Fla.)

|November 8, 2023

Summary

This summary is machine-generated.

Researchers developed bulk metamaterials for directional heat control, enabling thermal rectification at the macroscale. This breakthrough offers tunable thermal properties for advanced thermal management solutions.

Keywords:

microstructural design programmable heat transfer thermal metamaterials thermal rectification

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Area of Science:

Materials Science
Thermodynamics
Nanotechnology

Background:

Thermal rectification, preferential heat transfer in one direction, is crucial for thermal management.
Current thermal rectification devices are often complex, nanoscale, and lack macroscale programmability.
Achieving programmable 3D heat control at the macroscale remains a significant challenge.

Purpose of the Study:

To create bulk metamaterials capable of macroscale thermal rectification.
To demonstrate programmable control of heat transfer directionality through microstructural design.
To explore novel thermal management strategies using engineered metamaterials.

Main Methods:

Modular design of bulk metamaterials with tunable microstructures.
Fabrication of microstructured composites from a single material composition.
Characterization of heat transfer properties in convergent and divergent states.

Main Results:

Successful creation of bulk metamaterials exhibiting thermal rectification.
Demonstration of directional heat transfer control by tuning metamaterial design.
Achieved tunable local thermal properties for macroscopic heat transfer effects.

Conclusions:

Modularly designed bulk metamaterials offer a viable route to macroscale thermal rectification.
Microstructural design provides sufficient freedom for tunable thermal properties.
This approach shows promise for next-generation thermal management systems.