Field-induced columnar structures in a quasi-two-dimensional system of dipolar particles

Shin Shing Yeh, Ching Hsueh, Peilong Chen, Jorge Viñals

Research output: Contribution to journalArticle

5 Citations (Scopus)

Abstract

We study the formation of columnar structures of uniaxial dipoles in an external magnetic field both experimentally and theoretically. By applying an external magnetic field parallel to a thin layer of a magnetorheological fluid, we manipulate a single initial cluster of suspended colloidal particles. We find that the cluster breaks up into columns that have approximately uniform widths and intercolumnar spacings. Both the average column width and inter column spacing are observed to vary linearly with column length. The observed linear relationships between column width and spacing versus the column length are interpreted theoretically by computing the potential energy of an ensemble of closed-packed columns of spherical dipolar particles.

Original languageEnglish (US)
Article number051407
JournalPhysical Review E - Statistical, Nonlinear, and Soft Matter Physics
Volume76
Issue number5
DOIs
StatePublished - Nov 29 2007

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Two-dimensional Systems
Spacing
spacing
External Field
Magnetic Field
Magnetorheological Fluid
magnetorheological fluids
Breakup
Thin Layer
magnetic fields
Dipole
Ensemble
Linearly
potential energy
Vary
dipoles
Closed
Computing
Energy

Cite this

Field-induced columnar structures in a quasi-two-dimensional system of dipolar particles. / Yeh, Shin Shing; Hsueh, Ching; Chen, Peilong; Viñals, Jorge.

In: Physical Review E - Statistical, Nonlinear, and Soft Matter Physics, Vol. 76, No. 5, 051407, 29.11.2007.

Research output: Contribution to journalArticle

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