Highly flexible near-infrared metamaterials

Area of Science:

• Materials Science
• Nanotechnology
• Optics

Background:

• Traditional plasmonic and metamaterial nanostructures are typically fabricated on rigid substrates like glass or silicon.
• Their optical functionality is often limited by planar surfaces, leading to sensitivity to the angle of incident light.

Purpose of the Study:

• To demonstrate the fabrication of flexible, tri-layer metamaterials operating in the near-infrared (NIR) spectrum.
• To showcase the application of the flip chip transfer (FCT) technique for creating functional nanodevices on flexible substrates.

Main Methods:

• Utilized the flip chip transfer (FCT) technique to fabricate tri-layer metamaterial nanostructures on a transparent polyethylene terephthalate (PET) substrate.
• The FCT method is a solution-free process suitable for various functional nanodevices.

Main Results:

• Successfully fabricated flexible metamaterials operating in the NIR regime.
• Demonstrated that the optical functionality of these NIR metamaterial devices is maintained even when the PET substrate is bent into various shapes.
• The FCT technique proved effective for fabricating nanodevices on flexible materials.

Conclusions:

• Flexible metamaterials can be fabricated on transparent polymer substrates using the FCT technique.
• The developed flexible NIR metamaterial devices exhibit shape-transforming capabilities, opening new avenues for tunable optical devices.