Co-occurrence of photochemical and thermal effects during laser polymer ablation via a 248-nm excimer laser

Y. Feng, Z. Q. Liu, X. S. Yi

Research output: Journal PublicationArticlepeer-review

39 Citations (Scopus)

Abstract

Polypropylene (PP) was ablated using a 248-nm KrF excimer laser with a fluence in the range of 0.4-2 J/cm2 and at a repetition rate of 10 Hz. It has been found that both photochemical and thermal effects are co-operative during laser ablation process, evidenced by the existence of thermal affected zone (TAZ), together with ablative zone (AZ) and unaffected zone (UAZ) in the ablated crater. Increment of both fluence and the number of pulses leads to a more striking thermal effect, demonstrated by the spatial expansion of rim for PP. Relative importance of photochemical and thermal effects was theoretically discussed.

Original languageEnglish
Pages (from-to)177-182
Number of pages6
JournalApplied Surface Science
Volume156
Issue number1
DOIs
Publication statusPublished - 2 Feb 2000
Externally publishedYes

ASJC Scopus subject areas

  • Chemistry (all)
  • Condensed Matter Physics
  • Physics and Astronomy (all)
  • Surfaces and Interfaces
  • Surfaces, Coatings and Films

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