Magnetochromatic effects in magnetic fluid thin films

Herng Er Horng; Chin Yih Hong; Wai Bong Yeung; Hong Chang Yang

doi:10.1364/AO.37.002674

Magnetochromatic effects in magnetic fluid thin films

Herng Er Horng^*, Chin Yih Hong, Wai Bong Yeung, Hong Chang Yang

^*Corresponding author for this work

Undergraduate Program of Electro-Optical Engineering

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

62 Citations (Scopus)

Abstract

A homogeneous ferrofluid composition capable of reversibly forming ordered crystalline two dimensional hexagonal lattices of magnetic particle columns in a thin film under the influence of external magnetic fields has been synthesized. We can manipulate the spacings between the particles columns by adjusting parameters such as external magnetic field strength, film thickness, rate of change of the field strength, and concentration of magnetic particles in the ferrofluid. These spacings between particle columns are of the order of several micrometers and are capable of diffracting visible light to produce monochromatic interference colors. We can change the resulting colors by altering the lattice spacing to exhibit the feasibility of generating monochromatic colors.

Original language	English
Pages (from-to)	2674-2680
Number of pages	7
Journal	Applied Optics
Volume	37
Issue number	13
DOIs	https://doi.org/10.1364/AO.37.002674
Publication status	Published - 1998 May 1

ASJC Scopus subject areas

Atomic and Molecular Physics, and Optics
Engineering (miscellaneous)
Electrical and Electronic Engineering

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AU - Yeung, Wai Bong

AU - Yang, Hong Chang

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N2 - A homogeneous ferrofluid composition capable of reversibly forming ordered crystalline two dimensional hexagonal lattices of magnetic particle columns in a thin film under the influence of external magnetic fields has been synthesized. We can manipulate the spacings between the particles columns by adjusting parameters such as external magnetic field strength, film thickness, rate of change of the field strength, and concentration of magnetic particles in the ferrofluid. These spacings between particle columns are of the order of several micrometers and are capable of diffracting visible light to produce monochromatic interference colors. We can change the resulting colors by altering the lattice spacing to exhibit the feasibility of generating monochromatic colors.

AB - A homogeneous ferrofluid composition capable of reversibly forming ordered crystalline two dimensional hexagonal lattices of magnetic particle columns in a thin film under the influence of external magnetic fields has been synthesized. We can manipulate the spacings between the particles columns by adjusting parameters such as external magnetic field strength, film thickness, rate of change of the field strength, and concentration of magnetic particles in the ferrofluid. These spacings between particle columns are of the order of several micrometers and are capable of diffracting visible light to produce monochromatic interference colors. We can change the resulting colors by altering the lattice spacing to exhibit the feasibility of generating monochromatic colors.

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Magnetochromatic effects in magnetic fluid thin films

Abstract

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