Phase-change metasurface for switchable terahertz edge detection and bright-field imaging based on quasi-bound states in the continuum

Key Points

• The focus is on enhancing the functionality of metasurfaces for practical applications by enabling reconfigurability in terahertz imaging.
• Developed a phase-change metasurface design.
• Investigated the effects of quasi-bound states in the continuum.
• Conducted experiments for terahertz edge detection and imaging.
• Achieved switchable functionalities in metasurfaces for terahertz applications.
• Improved imaging quality compared to static metasurfaces.
• Demonstrated effective edge detection in varying environmental conditions.