Cost-effective and high-throughput plasmonic interference coupled nanostructures by using quasi-uniform anodic aluminum oxide

Yoonsu Bae, Jiseop Yu, Yeonseok Jung, Donghun Lee, Dukhyun Choi

Research output: Contribution to journalArticle

Abstract

Large-area and uniform plasmonic nanostructures have often been fabricated by simply evaporating noble metals such as gold and silver on a variety of nanotemplates such as nanopores, nanotubes, and nanorods. However, some highly uniform nanotemplates are limited to be utilized by long, complex, and expensive fabrication. Here, we introduce a cost-effective and high-throughput fabrication method for plasmonic interference coupled nanostructures based on quasi-uniform anodic aluminum oxide (QU-AAO) nanotemplates. Industrial aluminum, with a purity of 99.5%, and copper were used as a base template and a plasmonic material, respectively. The combination of these modifications saves more than 18 h of fabrication time and reduces the cost of fabrication 30-fold. From optical reflectance data, we found that QU-AAO based plasmonic nanostructures exhibit similar optical behaviors to highly ordered (HO) AAO-based nanostructures. By adjusting the thickness of the AAO layer and its pore size, we could easily control the optical properties of the nanostructures. Thus, we expect that QU-AAO might be effectively utilized for commercial plasmonic applications.

Original languageEnglish
Article number420
JournalCoatings
Volume9
Issue number7
DOIs
Publication statusPublished - 2019

Keywords

  • Anodic aluminum oxide
  • Cost-effective
  • High-throughput
  • Nanoplasmonics
  • Optical interference
  • Quasi-uniform

ASJC Scopus subject areas

  • Surfaces and Interfaces
  • Surfaces, Coatings and Films
  • Materials Chemistry

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