Pattern formation in microdrops of magnetic fluids

I. J. Jang, H. E. Horng, Y. C. Chiou, Chin Yih Hong, J. M. Wu, H. C. Yang

Research output: Contribution to journalArticle

21 Citations (Scopus)

Abstract

The pattern formation of magnetic fluid films containing magnetic microdrops under applied perpendicular magnetic fields was investigated. At a zero field, these drops of size several μm were initially near-circular. As the field strength increased, these drops changed to dumbbells or branched structure. When the field strength increased again, a labyrinthine structure appeared. At even higher field strength, the connectivity of the drops broke up; and finally an equilibrium hexagonal structure formed inside the film. A new phase transition exists between the labyrinthine structure and the hexagonal structure, which has not been seen before. Also, the reverse process of pattern formation is irreversible.

Original languageEnglish
Pages (from-to)317-320
Number of pages4
JournalJournal of Magnetism and Magnetic Materials
Volume201
Issue number1-3
DOIs
Publication statusPublished - 1999 Jul

Fingerprint

Magnetic fluids
field strength
Drop breakup
fluids
fluid films
Phase transitions
Magnetic fields
magnetic fields

Keywords

  • Hexagonal structure
  • Labyrinthine structure
  • Microdrops

ASJC Scopus subject areas

  • Electronic, Optical and Magnetic Materials
  • Condensed Matter Physics

Cite this

Pattern formation in microdrops of magnetic fluids. / Jang, I. J.; Horng, H. E.; Chiou, Y. C.; Hong, Chin Yih; Wu, J. M.; Yang, H. C.

In: Journal of Magnetism and Magnetic Materials, Vol. 201, No. 1-3, 07.1999, p. 317-320.

Research output: Contribution to journalArticle

Jang, I. J. ; Horng, H. E. ; Chiou, Y. C. ; Hong, Chin Yih ; Wu, J. M. ; Yang, H. C. / Pattern formation in microdrops of magnetic fluids. In: Journal of Magnetism and Magnetic Materials. 1999 ; Vol. 201, No. 1-3. pp. 317-320.
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