Controlling thermal emission with metasurfaces and its applications

Area of Science:

• Optics and Photonics
• Materials Science
• Nanotechnology

Background:

• Conventional thermal emission is broadband, unpolarized, and incoherent, limiting its use in specific infrared applications.
• Metasurfaces, engineered nanostructures, offer tunable optical properties for controlling thermal emission.

Purpose of the Study:

• To review recent advancements in regulating thermal emission using metasurfaces.
• To explore infrared applications enabled by metasurface-controlled thermal emission.

Main Methods:

• Utilizing two-dimensional subwavelength artificial nanostructures (metasurfaces).
• Investigating the flexibility of metasurfaces in tuning optical properties.
• Analyzing control over wavelength, polarization, radiation angle, and coherence of thermal emission.

Main Results:

• Demonstrated remarkable progress in tuning thermal emission properties.
• Enabled applications in compact and integrated optical devices.
• Showcased metasurface capabilities for tailored thermal radiation.

Conclusions:

• Metasurfaces provide an ideal platform for shaping thermal emission with high precision.
• Advances in metasurface technology are driving innovation in infrared sensing, radiative cooling, and thermophotovoltaic devices.