Cummins, C;
Flamant, Q;
Dwivedi, R;
Alvarez-Fernandez, A;
Demazy, N;
Bentaleb, A;
Pound-Lana, G;
... Ponsinet, V; + view all
(2022)
An Ultra-Thin Near-Perfect Absorber via Block Copolymer Engineered Metasurfaces.
Journal of Colloid and Interface Science
, 609
pp. 375-383.
10.1016/j.jcis.2021.11.163.
Preview |
Text
Manuscript_JCISci_CCummins_revision_.pdf - Accepted Version Download (1MB) | Preview |
Abstract
Producing ultrathin light absorber layers is attractive towards the integration of lightweight planar components in electronic, photonic, and sensor devices. In this work, we report the experimental demonstration of a thin gold (Au) metallic metasurface with near-perfect visible absorption (∼95 %). Au nanoresonators possessing heights from 5 − 15 nm with sub-50 nm diameters were engineered by block copolymer (BCP) templating. The Au nanoresonators were fabricated on an alumina (Al2O3) spacer layer and a reflecting Au mirror, in a film-coupled nanoparticle design. The BCP nanopatterning strategy to produce desired heights of Au nanoresonators was tailored to achieve near-perfect absorption at ≈ 600 nm. The experimental insight described in this work is a step forward towards realizing large area flat optics applications derived from subwavelength-thin metasurfaces.
| Type: | Article |
|---|---|
| Title: | An Ultra-Thin Near-Perfect Absorber via Block Copolymer Engineered Metasurfaces |
| Location: | United States |
| Open access status: | An open access version is available from UCL Discovery |
| DOI: | 10.1016/j.jcis.2021.11.163 |
| Publisher version: | https://doi.org/10.1016/j.jcis.2021.11.163 |
| Language: | English |
| Additional information: | This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions. |
| Keywords: | Science & Technology, Physical Sciences, Chemistry, Physical, Chemistry, Block copolymers, Metasurfaces, Perfect absorbers, Nanoresonators, Flat optics, ARRAYS |
| UCL classification: | UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Chemical Engineering UCL > Provost and Vice Provost Offices > UCL BEAMS UCL |
| URI: | https://discovery.ucl.ac.uk/id/eprint/10151018 |
Archive Staff Only
 |
View Item |
