Two-photon fabrication of three-dimensional metallic nanostructures for plasmonic metamaterials

Atsushi Ishikawa, Takuo Tanaka

Research output: Contribution to journalArticlepeer-review

21 Citations (Scopus)


We propose a novel laser fabrication technique based on two-photon-induced reduction of metal ions for 3D metallic micro/nanostructures. Electrically conductive silver nanostructures with arbitrary 3D shape are demonstrated. By introducing dopant surfactant molecules, which prohibit unwanted metal growth, we demonstrate considerable improvement of the reduction properties to achieve a spatial resolution down to 120 nm. Plasmonic metamaterials fabricated using this technique exhibit magnetic resonances with negative permeability at far-infrared frequencies.

Original languageEnglish
Pages (from-to)11-15
Number of pages5
JournalJournal of Laser Micro Nanoengineering
Issue number1
Publication statusPublished - Feb 2012


  • 3D metallic nanostructures
  • Laser fabrication
  • Photoreduction of metal ions
  • Plasmonic metamaterials
  • Two-photon absorption

ASJC Scopus subject areas

  • Instrumentation
  • Industrial and Manufacturing Engineering
  • Electrical and Electronic Engineering


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