Directed Thermal Diffusions through Metamaterial Source Illusion with Homogeneous Natural Media

Area of Science:

• Thermal physics
• Transformation optics
• Materials science

Background:

• Illusion devices have expanded into thermal fields using transformation optics.
• Current thermal illusion designs rely on complex geometric profiles and conductivity configurations.

Purpose of the Study:

• To propose a novel methodology for designing thermal source illusion devices.
• To achieve directed thermal diffusions using natural homogeneous media.
• To overcome the limitations of pre-designed geometric profiles in thermal field reshaping.

Main Methods:

• Utilizing space rotations in linear transformation processes for profile independence.
• Employing natural homogeneous media for enhanced feasibility.
• Demonstrating four schemes in transient states with minimal media types.

Main Results:

• Directed thermal diffusions were achieved, independent of geometric profiles.
• The use of homogeneous media improved the practicality of the devices.
• Performance analysis confirmed expected thermal distribution and illusion effectiveness.

Conclusions:

• The proposed methodology offers a feasible approach to designing thermal source illusion devices.
• These devices can be applied to directed thermal diffusion with minimal loss.
• Potential applications include multi-beam thermal generation, thermal lenses, solar receivers, and waveguides.