UV laser-induced jet formation from liquid surface as revealed by nanosecond time-resolved imaging and spectroscopic studies

Yasuyuki Tsuboi, Hiroshi Fukumura, Hiroshi Masuhara

Research output: Contribution to journalArticlepeer-review

36 Citations (Scopus)

Abstract

Irradiation of organic solution surfaces with intense 248 nm laser light resulted in "jet" ejection with a distinct threshold, which was elucidated by a nanosecond imaging method. The threshold value increased as the boiling point of solvent increased, and the estimated temperature at the threshold was close to the boiling point in each system. The behavior is clearly ascribed to a photothermal process; explosive boiling of liquids causes the jet ejection. In time-resolved spectroscopic measurements, hot bands of solute fluorescence were clearly identified and heating dynamics was directly followed. Transient species involved in the jet ejection were excited singlet, triplet, and cationic states of solute molecules. The triplet-triplet annihilation process was confirmed, and the mechanism underlying the jet ejection are discussed in detail correlating the dynamic behavior of jet ejection with the temporal behavior of transient species.

Original languageEnglish
Pages (from-to)10305-10312
Number of pages8
JournalJournal of physical chemistry
Volume99
Issue number25
DOIs
Publication statusPublished - 1995 Jan 1

ASJC Scopus subject areas

  • Engineering(all)
  • Physical and Theoretical Chemistry

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