Tunable Characteristics and Mechanism Analysis of the Magnetic Fluid Refractive Index With Applied Magnetic Field

Author

Yong Zhao ; Di Wu ; Ri-Qing Lv ; Yu Ying

Author_Institution

Coll. of Inf. Sci. & Eng., Northeastern Univ., Shenyang, China

Volume

50

Issue

8

fYear

2014

fDate

Aug. 2014

Firstpage

1

Lastpage

5

Abstract

The tunable refractive index of the magnetic fluid (MF) is a unique optical property, which has attracted a lot of research interest in recent years. In this paper, a method based on the Fresnel reflection at the fiber end face is presented. Experimental measurements are carried out to investigate the magnetic field (intensity and direction) and temperature-dependent refractive index of the MF. For a given concentration, with the increase of the magnetic field intensity, the nMF increases gradually when H//Light, while decreases when H⊥Light. The effect of temperature on nMF is relatively insignificant with the sensitivity of -8 × 10^-5/°C. In addition, the mechanism is analyzed from the point of the microstructure by the Monte Carlo method.

Keywords

Monte Carlo methods; light reflection; liquid structure; magnetic fluids; refractive index; Fresnel reflection; Monte Carlo method; fiber end face; magnetic field; magnetic fluid refractive index; microstructure; optical property; temperature-dependent refractive index; Magnetic field measurement; Magnetic fields; Magnetic liquids; Magnetic susceptibility; Probes; Refractive index; Temperature measurement; Fresnel reflection; Monte Carlo; magnetic fluid (MF); refractive index;

fLanguage

English

Journal_Title

Magnetics, IEEE Transactions on

Publisher

ieee

ISSN

0018-9464

Type

jour

DOI

10.1109/TMAG.2014.2310710

Filename

6763086