Fast Fabrication of a Ag Nanostructure Substrate Using the Femtosecond Laser for Broad-Band and Tunable Plasmonic Enhancement

Ming Lun Tseng, Yao-Wei Huang, Min-Kai Hsiao, Hsin Wei Huang, Hao Ming Chen, Yu Lim Chen, Cheng Hung Chu, Nien-Nan Chu, You Je He, Chia Min Chang, Wei Chih Lin, Ding-Wei Huang, Hai-Pang Chiang, Ru-Shi Liu, Greg Sun, Din Ping Tsai*

*Corresponding author for this work

Research output: Contribution to journalArticlepeer-review

52 Scopus citations

Abstract

Using a femtosecond laser, we have transformed the laser-direct-writing technique into a highly efficient method that can process AgOx thin films into Ag nanostructures at a fast scanning rate of 2000 mu m(2)/min. The processed AgOx thin films exhibit broad-band enhancement of optical absorption and effectively function as active SERS substrates. Probing of the plasmonic hotspots with dyed polymer beads indicates that these hotspots are uniformly distributed over the treated area.

Original languageAmerican English
Pages (from-to)5190-5197
Number of pages8
JournalACS Nano
Volume6
Issue number6
DOIs
StatePublished - Jun 2012

Keywords

  • plasmonics
  • laser-direct-writing technique
  • hotspot
  • fluorescence enhancement
  • SERS
  • RAMAN-SCATTERING
  • NEAR-FIELD
  • PHOTOCATALYTIC ACTIVITY
  • SILVER NANOPARTICLES
  • OPTICAL-PROPERTIES
  • SYMMETRY-BREAKING
  • SIZE
  • LIGHT
  • PHOTOGENERATION
  • NANOSHELLS

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