Nanofabrication of high throughput 30 nm hole 2D arrays by a simple visible laser ablation technique

Kazushi Yamada, Chieko Narita, Ramanujam Kumaresan, Takuya Shinohara, Mitsuhiro Terakawa, Yasuyuki Tsuboi

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

In this paper, we demonstrate two-dimensional nanohole array substrates prepared using the visible laser ablation technique. We fabricated Au/polymer hybrid thin films where the Au nanoparticles were fixed onto the block copolymer substrate, which was used as the microphase-separated structure. The film was coated with a thin layer of poly(methyl acrylate), and was then irradiated with a nanosecond 532 nm pulsed laser light. The light excited the resonant plasmon absorption band of the Au nanoparticles. The nanoparticles underwent explosive vaporization via a superheated state, resulting in the formation of two-dimensional nanohole arrays on the film surface. The relevant mechanism aspects of the nanohole formation process and the relationship with laser fluence are presented.

Original languageEnglish
Pages (from-to)868-872
Number of pages5
JournalApplied Surface Science
Volume420
DOIs
Publication statusPublished - 2017 Oct 31

Keywords

  • Gold nanoparticles
  • Laser ablation
  • Nanofabrication
  • Plasmon
  • Visible laser

ASJC Scopus subject areas

  • Chemistry(all)
  • Condensed Matter Physics
  • Physics and Astronomy(all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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