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Wavefront Control with Nanohole Array-Based Out-of-Plane Metasurfaces
Mohsin Habib1, Ibrahim Issah1, Daria Briukhanova1
1Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland.
ACS Applied Nano Materials
|October 1, 2021
Summary
This study presents a novel out-of-plane metasurface using self-rolling microtubes for advanced wavefront control. This unique design offers enhanced light manipulation capabilities beyond traditional planar metasurfaces.
Area of Science:
- Nanophotonics and Metasurface Technology
- Optical Engineering
- Materials Science
Background:
- Planar metasurfaces enable subwavelength wavefront control by manipulating light phase.
- Existing metasurfaces are typically planar, limiting certain manipulation capabilities.
Purpose of the Study:
- To introduce a novel out-of-plane metasurface design.
- To demonstrate enhanced wavefront control using a self-rolling technique.
Main Methods:
- Fabrication of metasurfaces using a photoresist-based self-rolling technique.
- Creation of nanohole arrays on rolled-up microtubes made of gold (Au) and silicon dioxide (SiO2).
- Analytical calculation of dispersion relations and numerical calculation of transmitted light phase.
Main Results:
- Successful fabrication of out-of-plane metasurfaces on rolled-up microtubes.
- Demonstration of effective wavefront control due to the curved nature of the metasurface.
- Verification of the effect through spectral measurements and optical simulations.
Conclusions:
- The self-rolling technique enables a unique platform for out-of-plane metasurfaces.
- This approach offers enhanced wavefront manipulation compared to planar designs.
- Potential applications include stacked metasurfaces and optical trapping.
