Eye-Tracking-Driven Programming Metasurface System for Adaptive Beam Focusing and Polarization-Agile Communication

Area of Science:

• Electromagnetic Metasurfaces
• Wireless Communication Systems
• Human-Computer Interaction

Background:

• High-frequency 6G systems require precise spatial-field control, but narrow beamwidths and 3D tracking pose alignment challenges.
• Existing methods struggle with the complexities of real-time beam steering and spatial focusing in near-field applications.

Purpose of the Study:

• To develop an eye-tracking-driven programmable metasurface for gaze-contingent beam steering in 6G systems.
• To enable seamless integration of human visual intent with electromagnetic responses for advanced wireless communication.

Main Methods:

• Integration of a polarization-agile metasurface with independent 1-bit phase control for copolarized and cross-polarized reflections.
• Engineering a 90° phase offset to achieve high-gain beam focusing and linear-to-circular polarization conversion.
• Dynamic mapping of 3D gaze coordinates to metasurface coding patterns with millisecond responsiveness.

Main Results:

• Demonstrated robust near-field focusing and far-field scanning capabilities.
• Achieved efficient linear-to-circular polarization conversion through precise phase control.
• Validated millisecond-level responsiveness in mapping gaze to beam steering.

Conclusions:

• The eye-tracking programmable metasurface establishes a 'service-follows-vision' paradigm for intelligent wireless systems.
• The system offers significant advantages in signal enhancement and interference mitigation for future 6G networks.