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Applied Optics

Applied Optics

APPLICATIONS-CENTERED RESEARCH IN OPTICS

  • Vol. 37, Iss. 13 — May. 1, 1998
  • pp: 2674–2680

Magnetochromatic Effects in Magnetic Fluid Thin Films

Herng-Er Horng, Chin-Yih Hong, Wai Bong Yeung, and Hong-Chang Yang  »View Author Affiliations


Applied Optics, Vol. 37, Issue 13, pp. 2674-2680 (1998)
http://dx.doi.org/10.1364/AO.37.002674


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Abstract

A homogeneous ferrofluid composition capable of reversiblyforming ordered crystalline two-dimensional hexagonal lattices ofmagnetic particle columns in a thin film under the influence ofexternal magnetic fields has been synthesized. We can manipulatethe spacings between the particles columns by adjusting parameters suchas external magnetic field strength, film thickness, rate of change ofthe field strength, and concentration of magnetic particles in theferrofluid. These spacings between particle columns are of theorder of several micrometers and are capable of diffracting visiblelight to produce monochromatic interference colors. We can changethe resulting colors by altering the lattice spacing to exhibit thefeasibility of generating monochromatic colors.

© 1998 Optical Society of America

OCIS Codes
(160.3820) Materials : Magneto-optical materials
(210.3820) Optical data storage : Magneto-optical materials
(310.0310) Thin films : Thin films

Citation
Herng-Er Horng, Chin-Yih Hong, Wai Bong Yeung, and Hong-Chang Yang, "Magnetochromatic Effects in Magnetic Fluid Thin Films," Appl. Opt. 37, 2674-2680 (1998)
http://www.opticsinfobase.org/ao/abstract.cfm?URI=ao-37-13-2674

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