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printed invisibility cloak could hide objects from heat sensors
Interesting Engineering • • science
Key Points:
- Researchers at the University of Illinois Urbana-Champaign have created the first 3D, omnidirectional thermal cloak that makes objects invisible to infrared cameras from any angle by guiding heat around them rather than blocking it.
- The cloak uses a complex 3D-printed aluminum lattice filled with a low-conductivity rubber-like material, allowing precise control of heat flow and maintaining a stable temperature inside the cloaked object.
- Unlike previous thermal cloaks limited to specific angles or 2D applications, this device works across dynamic environments and irregular shapes, including a detailed 3D model of a human head.
- Potential applications include protecting microchips from overheating, enhancing military stealth by masking heat signatures of personnel and vehicles, and broadly safeguarding heat-based information.
- Future research aims to develop "smart" cloaks capable of sensing and dynamically dissipating internally generated heat, with the study published in Nature Communications and conducted in partnership with the Technical University of Denmark.
