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

doi:10.1016/S0304-8853(99)00075-X

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

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

Research output: Contribution to journal › Article › peer-review

23 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 language	English
Pages (from-to)	317-320
Number of pages	4
Journal	Journal of Magnetism and Magnetic Materials
Volume	201
Issue number	1-3
DOIs	https://doi.org/10.1016/S0304-8853(99)00075-X
Publication status	Published - 1999 Jul

Keywords

Hexagonal structure
Labyrinthine structure
Microdrops

ASJC Scopus subject areas

Electronic, Optical and Magnetic Materials
Condensed Matter Physics

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10.1016/S0304-8853(99)00075-X

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title = "Pattern formation in microdrops of magnetic fluids",

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.",

keywords = "Hexagonal structure, Labyrinthine structure, Microdrops",

author = "Jang, {I. J.} and Horng, {H. E.} and Chiou, {Y. C.} and Hong, {Chin Yih} and Wu, {J. M.} and Yang, {H. C.}",

year = "1999",

month = jul,

doi = "10.1016/S0304-8853(99)00075-X",

language = "English",

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TY - JOUR

T1 - Pattern formation in microdrops of magnetic fluids

AU - Jang, I. J.

AU - Horng, H. E.

AU - Chiou, Y. C.

AU - Hong, Chin Yih

AU - Wu, J. M.

AU - Yang, H. C.

PY - 1999/7

Y1 - 1999/7

N2 - 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.

AB - 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.

KW - Hexagonal structure

KW - Labyrinthine structure

KW - Microdrops

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DO - 10.1016/S0304-8853(99)00075-X

M3 - Article

AN - SCOPUS:0033154159

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VL - 201

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EP - 320

JO - Journal of Magnetism and Magnetic Materials

JF - Journal of Magnetism and Magnetic Materials

IS - 1-3

ER -

Pattern formation in microdrops of magnetic fluids

Abstract

Keywords

ASJC Scopus subject areas

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