Statics of magnetic bead chain in magnetic field

Nobuyuki Nakayama*, Hiroyuki Kawamoto, Makoto Yamaguchi

*Corresponding author for this work

    Research output: Contribution to journalArticlepeer-review

    20 Citations (Scopus)


    Experimental, numerical, and theoretical investigations have been carried out on statics of a magnetic bead chain in the magnetic field. Chains formed on a solenoid coil were observed and chain lengths and slant angles were measured by a digital microscope. It was deduced that (1) the chain length depends on both the surface loading of magnetic particles and the magnetic flux density, and is almost independent of the particle diameter if the sufficient amount of particles are provided; (2) chains incline in the inclined magnetic field and the inclination of the chain is enlarged by the gravitational force. These configurations of chains are approximately determined to minimize the total potential energy that consisted of the gravitational and magnetic potential energy. These characteristics were qualitatively confirmed by the numerical calculation with the two-dimensional Distinct Element Method. The investigation is expected to be utilized for the improvement of the two-component magnetic brush development system in electrophotography.

    Original languageEnglish
    Pages (from-to)422-432
    Number of pages11
    JournalJournal of Imaging Science and Technology
    Issue number5
    Publication statusPublished - 2002 Sep

    ASJC Scopus subject areas

    • Computer Vision and Pattern Recognition
    • Electronic, Optical and Magnetic Materials


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