Wavefront Control with Nanohole Array-Based Out-of-Plane Metasurfaces.

Autor: Habib M; Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland., Issah I; Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland., Briukhanova D; Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland., Rashed AR; Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland., Caglayan H; Faculty of Engineering and Natural Science, Photonics, Tampere University, 33720 Tampere, Finland.
Jazyk: angličtina
Zdroj: ACS applied nano materials [ACS Appl Nano Mater] 2021 Sep 24; Vol. 4 (9), pp. 8699-8705. Date of Electronic Publication: 2021 Aug 02.
DOI: 10.1021/acsanm.1c01178
Abstrakt: Planar metasurfaces provide exceptional wavefront manipulation at the subwavelength scale by controlling the phase of the light. Here, we introduce an out-of-plane nanohole-based metasurface design with the implementation of a unique self-rolling technique. The photoresist-based technique enables the fabrication of the metasurface formed by nanohole arrays on gold (Au) and silicon dioxide (SiO 2 ) rolled-up microtubes. The curved nature of the tube allows the fabrication of an out-of-plane metasurface that can effectively control the wavefront compared to the common planar counterparts. This effect is verified by the spectral measurements of the fabricated samples. In addition, we analytically calculated the dispersion relation to identify the resonance wavelength of the structure and numerically calculate the phase of the transmitted light through the holes with different sizes. Our work forms the basis for the unique platform to introduce a new feature to the metasurfaces, which may find many applications from stacked metasurface layers to optical trapping particles inside the tube.
Competing Interests: The authors declare no competing financial interest.
(© 2021 The Authors. Published by American Chemical Society.)
Databáze: MEDLINE
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