Sensitized implantation of fluorescent molecules in a polymer film by near-infrared laser irradiation: Comparison with direct ultraviolet-laser implantation

H. Fukumura*, H. Banjo, Hiroshi Masuhara, N. Ichinose, S. Kawanishi

*Corresponding author for this work

Research output: Contribution to journalArticle

2 Scopus citations

Abstract

A polymer film doped both with a fluorescent coumarin derivative and an infrared absorbing dye was overlaid with a neat polymer film and then irradiated with 1064 nm laser pulses passing through the neat film. The unbroken coumarin dye was demonstrated to be transferred to the neat film surface, which however led to the formation of submicroscopic crystalline powder by repetitive irradiation. The result was compared with that of direct ultraviolet-laser irradiation, which resulted in rather homogeneous fluorescent patterns by repetitive irradiation. Characteristics of the sensitized implantation were discussed in connection with the mechanism of laser-induced molecular implantation.

Original languageEnglish
Pages (from-to)75-81
Number of pages7
JournalApplied Surface Science
Volume138-139
Issue number1-4
DOIs
StatePublished - 1 Jan 1999

Keywords

  • Ablation
  • Fluorescent molecule
  • Infrared
  • Laser implantation
  • Polymer

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