Retarded response of the optical transmittance through a magnetic fluid film under switching-on/off external magnetic fields

Shieh-Yueh Yang, Y. T. Hsiao, Y. W. Huang, Herng-Er Horng, Chin Yih Hong, Hong-Chang Yang

    Research output: Contribution to journalArticle

    14 Citations (Scopus)

    Abstract

    In our research, we develop the setup to observe the time-dependent response of the optical transmission through a magnetic fluid film under switching-on or -off the external magnetic field. The optical transmittance is reduced when an external magnetic field is applied perpendicularly to a magnetic fluid film. It was further found that the transmittance starts to decrease in tens of milliseconds after switching-on the external field (referred as the charging process). This retarded response of the transmittance with respect to the external of the field also occurs when the field is switched off (referred as the discharging process), with the retarding time ranging from several to tens of milliseconds, depending on field strength. In addition, the exponential decay or increase in the transmitted intensity was observed for the charging or discharging process, respectively.

    Original languageEnglish
    Pages (from-to)48-52
    Number of pages5
    JournalJournal of Magnetism and Magnetic Materials
    Volume281
    Issue number1
    DOIs
    Publication statusPublished - 2004 Oct 1

    Fingerprint

    fluid films
    Magnetic fluids
    Opacity
    transmittance
    Magnetic fields
    charging
    Light transmission
    magnetic fields
    field strength
    retarding
    decay

    Keywords

    • Magnetic fluid
    • Retarding
    • Transmittance

    ASJC Scopus subject areas

    • Condensed Matter Physics

    Cite this

    Retarded response of the optical transmittance through a magnetic fluid film under switching-on/off external magnetic fields. / Yang, Shieh-Yueh; Hsiao, Y. T.; Huang, Y. W.; Horng, Herng-Er; Hong, Chin Yih; Yang, Hong-Chang.

    In: Journal of Magnetism and Magnetic Materials, Vol. 281, No. 1, 01.10.2004, p. 48-52.

    Research output: Contribution to journalArticle

    Yang, Shieh-Yueh ; Hsiao, Y. T. ; Huang, Y. W. ; Horng, Herng-Er ; Hong, Chin Yih ; Yang, Hong-Chang. / Retarded response of the optical transmittance through a magnetic fluid film under switching-on/off external magnetic fields. In: Journal of Magnetism and Magnetic Materials. 2004 ; Vol. 281, No. 1. pp. 48-52.
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