Inverse Design of Active-Source Metamaterials for Thermal Camouflage with Arbitrary Active Sources.

Area of Science:

• Materials Science
• Thermodynamics
• Applied Physics

Background:

• Precise control of active-source thermal fields is crucial for technologies like thermal camouflage and energy harvesting.
• Active heat sources create localized high temperatures and complex heat flux distributions, challenging thermal management.

Purpose of the Study:

• To present a novel theoretical design framework for active-source metamaterials (ASM).
• To enable precise modulation of active-source thermal fields for advanced applications.

Main Methods:

• Integration of inverse design principles with transformation thermotics.
• Development of ASM to convert active-source effects into tailored anisotropic thermal conductivity.
• Numerical simulations and experimental validations for proof-of-concept thermal camouflage.

Main Results:

• Demonstrated precise thermal camouflage of active sources with varying geometries.
• Systematically investigated interactions between temperature fields, heat flux, and active source power.
• Validated the effectiveness of the proposed ASM framework.

Conclusions:

• Established a versatile framework for precise management of active-source thermal fields.
• The ASM approach offers significant potential for chip design, battery technology, and energy systems.