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 journalArticle


    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 1s. 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
    Issue number2
    Publication statusPublished - 1994


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