Change of damping for long-chain molecules during solidification and melting in scattering samples studied by Raman spectroscopy

Kazi Monowar Abedin, Jun Ichi Shikata, Katsuhiko Miyamoto, Hiromasa Ito

Research output: Contribution to journalArticle

Abstract

We studied the solidification and melting of certain complex scattering substances by laser Raman spectroscopy. We used a modified laser Raman system to study the spectrum of certain long-chain organic substances (paraffin and candlewax) during solidification and melting, and found that there is a significant and discontinuous change in linewidth (by 4-5 times) during these processes. By measuring the linewidth of a certain line during solidification, we show that at a microscopic level, there is a large change in the immediate microscopic environment and damping of the molecular motions. This shows that Raman spectroscopy can be used as a sensitive probe of the change in the immediate environment of the molecular motions in these systems.

Original languageEnglish
Pages (from-to)7936-7940
Number of pages5
JournalJapanese Journal of Applied Physics
Volume47
Issue number10 PART 1
DOIs
Publication statusPublished - Oct 2008

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Keywords

  • Linewidth
  • Melting
  • Molecular environment
  • Raman spectroscopy
  • Solidification

ASJC Scopus subject areas

  • Engineering(all)
  • Physics and Astronomy(all)

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