Femtosecond laser ablation transfer and phase transition of phthalocyanine solids

Tsuyoshi Asahi, Hiroshi Y. Yoshikawa, Masaki Yashiro, Hiroshi Masuhara*

*Corresponding author for this work

Research output: Contribution to journalConference articlepeer-review

20 Scopus citations

Abstract

Laser ablation transfer of phthalocyanine dyes to neat poly(methyl methacrylate) (PMMA) film was achieved space-selectively by femtosecond laser excitation. The transferred pattern at the laser fluence near ablation threshold was a dot with a diameter of a few micrometers, and a bigger doughnut pattern was obtained at higher fluence. By measuring the absorption spectra of original and deposited dyes, their crystal phase was confirmed to change upon femtosecond laser transfer depending on laser fluence.

Original languageEnglish
Pages (from-to)777-781
Number of pages5
JournalApplied Surface Science
Volume197-198
DOIs
StatePublished - 1 Jan 2002
EventCola 2001 - Tsukuba, Japan
Duration: 1 Oct 20011 Oct 2001

Keywords

  • Femtosecond laser ablation
  • Laser ablation transfer
  • Phase transition
  • Phthalocyanine

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