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

Autor:	Ching Hsueh, Jorge Viñals, Shin Shing Yeh, Peilong Chen
Rok vydání:	2007
Předmět:	Dipole Materials science Field (physics) Condensed matter physics Column (typography) Colloidal particle Magnetorheological fluid Cluster (physics) Potential energy Astrophysics::Galaxy Astrophysics Magnetic field
Zdroj:	Physical Review E. 76
ISSN:	1550-2376 1539-3755
DOI:	10.1103/physreve.76.051407
Popis:	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.
Databáze:	OpenAIRE
Externí odkaz:	https://explore.openaire.eu/search/publication?articleId=doi_dedup___::4a24d291c6494ff3a8748a8fa5694caf https://doi.org/10.1103/physreve.76.051407 Zobrazit plný text záznamu