Magnetically-modulated refractive index of magnetic fluid films

被引:135
作者
Yang, SY
Chen, YF
Horng, HE [1 ]
Hong, HE
Hong, CY
Tse, WS
Yang, HC
机构
[1] Natl Taiwan Normal Univ, Dept Phys, Taipei 116, Taiwan
[2] Natl Sun Yat Sen Univ, Dept Phys, Kaohsiung 804, Taiwan
[3] Natl Taiwan Normal Univ, Inst Electroopt Sci & Technol, Taipei 116, Taiwan
[4] Da Yeh Univ, Dept Mech & Automat Engn, Changhua 515, Taiwan
[5] Acad Sinica, Inst Phys, Taipei 115, Taiwan
[6] Natl Taiwan Univ, Dept Phys, Taipei 106, Taiwan
关键词
D O I
10.1063/1.1531831
中图分类号
O59 [应用物理学];
学科分类号
摘要
We developed a setup to probe the refractive index of the magnetic fluid films under external magnetic fields. This setup possesses a high resolution of 0.0001 in the measured refractive index. It was found that the refractive index of the magnetic fluid depends linearly on the concentration of the dilute magnetic fluid under zero field. For a given magnetic fluid film, the refractive index increases with the increasing field strength over a critical value, and then becomes saturated as the field reaches. around 200 Oe. It is noteworthy that the magnetically modulated refractive index of the magnetic fluid films could have great potential in electro-optical. applications. (C) 2002 American Institute of Physics.
引用
收藏
页码:4931 / 4933
页数:3
相关论文
共 24 条
[1]  
BACRI JC, 1995, PROG COLL POL SCI S, V98, P30
[2]   MAGNETO-OPTICS OF FERROFLUIDS, USING FIBER OPTICS [J].
CHUNG, DY ;
HICKMAN, TR ;
DEPAULA, RP ;
COLE, JH .
JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1983, 39 (1-2) :71-74
[3]   MAGNETIC BIREFRINGENCE OF FERROFLUIDS .1. ESTIMATION OF PARTICLE-SIZE [J].
DAVIES, HW ;
LLEWELLYN, JP .
JOURNAL OF PHYSICS D-APPLIED PHYSICS, 1979, 12 (02) :311-319
[4]   SPATIAL HOMOGENEITIES EVALUATION OF FERROFLUID THIN PLATES POLARIMETRIC CHARACTERISTICS FOR ACTIVE IMAGERY [J].
GERLIGAND, PY ;
LEJEUNE, B ;
CARIOU, J ;
LOTRIAN, J .
OPTICAL ENGINEERING, 1995, 34 (06) :1581-1588
[5]  
HEYES CF, 1975, J COLLOID INTERF SCI, V52, P239
[6]   Field-induced structural anisotropy in magnetic fluids [J].
Hong, CY .
JOURNAL OF APPLIED PHYSICS, 1999, 85 (08) :5962-5964
[7]   Effect of initial states on the phase diagram of the structural pattern in magnetic fluid films under perpendicular magnetic field [J].
Hong, CY ;
Chen, CA ;
Chen, CH ;
Horng, HE ;
Yang, SY ;
Yang, HC .
APPLIED PHYSICS LETTERS, 2001, 79 (15) :2360-2362
[8]   Evidence of multiple states of ordered structures and a phase transition in magnetic fluid films under perpendicular magnetic fields [J].
Hong, CY ;
Horng, HE ;
Kuo, FC ;
Yang, SY ;
Yang, HC ;
Wu, JM .
APPLIED PHYSICS LETTERS, 1999, 75 (15) :2196-2198
[9]   Magnetochromatics resulted from optical gratings of magnetic fluid films subjected to perpendicular magnetic fields [J].
Horng, HE ;
Hong, CY ;
Lee, SL ;
Ho, CH ;
Yang, SY ;
Yang, HC .
JOURNAL OF APPLIED PHYSICS, 2000, 88 (10) :5904-5908
[10]   Magnetochromatic effects in magnetic fluid thin films [J].
Horng, HE ;
Hong, CY ;
Yeung, WB ;
Yang, HC .
APPLIED OPTICS, 1998, 37 (13) :2674-2680