Quasi-Elastic Laser Scattering Method for Monitoring Capillary Wave Frequency at a Water/Nitrobenzene Interface

Satoshi Takahashi, Akira Harata, Takehiko Kitamori, Tsuguo Sawada

Research output: Contribution to journalArticlepeer-review

32 Citations (Scopus)

Abstract

A quasi-elastic laser scattering (QELS) method was applied to monitoring the capillary wave frequencies at a water/nitrobenzene interface. A digital spectrum analyzer was adopted to improve the time resolution of the QELS method. As a result, each power spectrum could be obtained in 1s and saved in an additional 1 s. The equipment was checked by monitoring capillary wave frequencies at a water/nitrobenzene interface covered with a monolayer of dipalmitoylphosphatidylcholine (DPPC), i.e. changes of interfacial tension caused by the formation of the monolayer at the interface were detected. The equipment was then applied to a chemical oscillation system. It was found that the interface of the chemical oscillation system was covered with a high density membrane during the chemical oscillation.

Original languageEnglish
Pages (from-to)305-308
Number of pages4
Journalanalytical sciences
Volume10
Issue number2
DOIs
Publication statusPublished - Jan 1 1994
Externally publishedYes

All Science Journal Classification (ASJC) codes

  • Analytical Chemistry

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