Unknown

Dataset Information

0

Scalable and controlled self-assembly of aluminum-based random plasmonic metasurfaces.


ABSTRACT: Subwavelength metal-dielectric plasmonic metasurfaces enable light management beyond the diffraction limit. However, a cost-effective and reliable fabrication method for such structures remains a major challenge hindering their full exploitation. Here, we propose a simple yet powerful manufacturing route for plasmonic metasurfaces based on a bottom-up approach. The fabricated metasurfaces consist of a dense distribution of randomly oriented nanoscale scatterers composed of aluminum (Al) nanohole-disk pairs, which exhibit angle-independent scattering that is tunable across the entire visible spectrum. The macroscopic response of the metasurfaces is controlled via the properties of an isolated Al nanohole-disk pair at the nanoscale. In addition, the optical field confinement at the scatterers and their random distribution of sizes result in a strongly enhanced Raman signal that enables broadly tunable excitation using a single substrate. This unique combination of a reliable and lithography-free methodology with the use of aluminum permits the exploitation of the full potential of random plasmonic metasurfaces for diagnostics and coloration.

SUBMITTER: Siddique RH 

PROVIDER: S-EPMC6062228 | biostudies-other | 2017 Jul

REPOSITORIES: biostudies-other

altmetric image

Publications

Scalable and controlled self-assembly of aluminum-based random plasmonic metasurfaces.

Siddique Radwanul Hasan RH   Mertens Jan J   Hölscher Hendrik H   Vignolini Silvia S  

Light, science & applications 20170714 7


Subwavelength metal-dielectric plasmonic metasurfaces enable light management beyond the diffraction limit. However, a cost-effective and reliable fabrication method for such structures remains a major challenge hindering their full exploitation. Here, we propose a simple yet powerful manufacturing route for plasmonic metasurfaces based on a bottom-up approach. The fabricated metasurfaces consist of a dense distribution of randomly oriented nanoscale scatterers composed of aluminum (Al) nanohole  ...[more]

Similar Datasets

| S-EPMC6207568 | biostudies-literature
| S-EPMC6286178 | biostudies-literature
| S-EPMC5058348 | biostudies-literature
| S-EPMC4620498 | biostudies-literature
| S-EPMC3478945 | biostudies-literature
| S-EPMC4457024 | biostudies-literature
| S-EPMC8447193 | biostudies-literature
| S-EPMC9295783 | biostudies-literature
| S-EPMC10945844 | biostudies-literature
| S-EPMC10665039 | biostudies-literature