Switchable unidirectional waves on mono- and diatomic metamaterials.

Area of Science:

• Physics
• Materials Science
• Electrical Engineering

Background:

• Metamaterials offer unique wave manipulation capabilities.
• Controlling wave propagation direction is crucial for advanced devices.

Purpose of the Study:

• To demonstrate switchable unidirectional propagation of slow waves in metamaterial arrays.
• To generalize this phenomenon to different types of coupling and dimensions.

Main Methods:

• Theoretical prediction and experimental verification of magnetoinductive wave propagation.
• Analytical prediction and numerical verification for electric coupling in nanostructured metamaterials.
• Generalization to diatomic arrays and 2D metasurfaces.

Main Results:

• Switchable unidirectional propagation of magnetoinductive waves achieved.
• Demonstrated selective unidirectional signal propagation in electric coupling metamaterials.
• Achieved directional control of waves in 2D metasurfaces with distinct frequency bands.

Conclusions:

• Dispersion relations dictate wave propagation direction in metamaterials.
• Unidirectional waveguiding is achievable with both magnetoinductive and electric coupling.
• The technique enables selective directional control for potential wireless signal transfer applications.