Fast fabrication of a Ag nanostructure substrate using the femtosecond laser for broad-band and tunable plasmonic enhancement

ACS Nano. 2012 Jun 26;6(6):5190-7. doi: 10.1021/nn300947n. Epub 2012 May 2.

Abstract

Using a femtosecond laser, we have transformed the laser-direct-writing technique into a highly efficient method that can process AgO(x) thin films into Ag nanostructures at a fast scanning rate of 2000 μm(2)/min. The processed AgO(x) 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.

Publication types

  • Research Support, Non-U.S. Gov't
  • Research Support, U.S. Gov't, Non-P.H.S.

MeSH terms

  • Crystallization / methods
  • Gold / chemistry*
  • Gold / radiation effects*
  • Lasers*
  • Macromolecular Substances / chemistry
  • Macromolecular Substances / radiation effects
  • Materials Testing
  • Molecular Conformation / radiation effects
  • Molecular Imprinting / methods*
  • Nanoparticles / chemistry*
  • Nanoparticles / radiation effects
  • Nanoparticles / ultrastructure*
  • Particle Size
  • Surface Plasmon Resonance / methods*
  • Surface Properties / radiation effects

Substances

  • Macromolecular Substances
  • Gold