Optical sensitization for laser-induced breakdown spectroscopy using argon nanobubbles

Satoshi Ikezawa, Muneaki Wakamatsu, Toshitsugu Ueda

    Research output: Chapter in Book/Report/Conference proceedingConference contribution

    1 Citation (Scopus)

    Abstract

    This paper demonstrates the validity and usefulness of laser-induced breakdown spectroscopy (LIBS) measurements enhanced by argon nanobubbles. The use of argon nanobubbles in the LIBS system revealed a higher sensitivity than that of conventional methods for LIBS solution measurements. To make the nanobubbles, argon gas was pumped into water, forming bubbles less than 100 nm in diameter. The solution of dissolved argon bubbles was used for the following measurements: (1) the hydrogen atomic spectrum (λ = 656 nm) from the water molecules (H2O) in the solution and (2) the nitrogen atomic spectrum (λ = 399.5 nm) from the air bubbles in the solution. These experimental results demonstrated that the argon nanobubbles have the ability of instantaneous plasma retention during the excitation/relaxation period, which is essential for highly sensitive spectral measurements. The intensity of nitrogen spectra (measurement (2)) obtained from the argon-air nanobubbles in water was much higher than that of the spectra obtained from normal LIBS air measurements.

    Original languageEnglish
    Title of host publicationProceedings of the International Conference on Sensing Technology, ICST
    Pages315-319
    Number of pages5
    DOIs
    Publication statusPublished - 2012
    Event2012 6th International Conference on Sensing Technology, ICST 2012 - Kolkata
    Duration: 2012 Dec 182012 Dec 21

    Other

    Other2012 6th International Conference on Sensing Technology, ICST 2012
    CityKolkata
    Period12/12/1812/12/21

    Keywords

    • argon gas
    • laser
    • LIBS
    • nanobubble

    ASJC Scopus subject areas

    • Artificial Intelligence
    • Computer Science Applications
    • Signal Processing
    • Electrical and Electronic Engineering

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  • Cite this

    Ikezawa, S., Wakamatsu, M., & Ueda, T. (2012). Optical sensitization for laser-induced breakdown spectroscopy using argon nanobubbles. In Proceedings of the International Conference on Sensing Technology, ICST (pp. 315-319). [6461694] https://doi.org/10.1109/ICSensT.2012.6461694