BIREFRINGENCE AND MAGNETO-OPTICAL PROPERTIES IN OLEIC ACID COATED Fe3O4 NANOPARTICLES: APPLICATION FOR OPTICAL SWITCH

被引：15

作者：

Xia, Si-Hua ^{[1
]}

Wang, Jun ^{[1
,2
]}

Luy, Zhang-Xian

Zhang, Feiyan ^{[1
]}

机构：

[1] Ningbo Univ, Fac Sci, Ningbo 315211, Zhejiang, Peoples R China

[2] Wanli Univ, Jr Coll, Ningbo 315100, Zhejiang, Peoples R China

来源：

INTERNATIONAL JOURNAL OF NANOSCIENCE | 2011年 / 10卷 / 03期

基金：

中国国家自然科学基金;

关键词：

Magnetic fluids; birefringence; magneto-optical properties; optical switch;

D O I：

10.1142/S0219581X11008289

中图分类号：

TB3 [工程材料学];

学科分类号：

0805 ; 080502 ;

摘要：

We report magneto-optical properties in a kerosene colloidal suspension of oleic acid coated Fe3O4 nanoparticles (similar to 14 nm). The magnetic colloids (fluids) show birefringence under a magnetic field. Systematical studies of the on-off switch times upon application of the on-off magnetic field with varied experimental parameters indicate that the switch response time depends strongly on the strength of the magnetic field and the concentration of the magnetic nanoparticles in the fluid. The data can be explained in terms of the formation of magnetic nanoparticle chains under a magnetic field. The important magneto-optical properties of the magnetic fluids allow us to design a tunable optical switch.

引用

页码：515 / 520

页数：6

共 32 条

[1] Micro total analysis systems. 2. Analytical standard operations and applications [J].

Auroux, PA ;

Iossifidis, D ;

Reyes, DR ;

Manz, A .

ANALYTICAL CHEMISTRY, 2002, 74 (12) :2637-2652

[2] Magneto-optical properties of a highly transparent cadmium ferrite-based magnetic fluid [J].

Bakuzis, AF ;

Neto, KS ;

Gravina, PP ;

Figueiredo, LC ;

Morais, PC ;

Silva, LP ;

Azevedo, RB ;

Silva, O .

APPLIED PHYSICS LETTERS, 2004, 84 (13) :2355-2357

[3] Magnetic-fluid optical-fiber modulators via magnetic modulation [J].

Chieh, J. J. ;

Yang, S. Y. ;

Horng, H. E. ;

Hong, Chin-Yih ;

Yang, H. C. .

APPLIED PHYSICS LETTERS, 2007, 90 (13)

[4] Biological sensors based on Brownian relaxation of magnetic nanoparticles [J].

Chung, SH ;

Hoffmann, A ;

Bader, SD ;

Liu, C ;

Kay, B ;

Makowski, L ;

Chen, L .

APPLIED PHYSICS LETTERS, 2004, 85 (14) :2971-2973

[5] Dynamics and lateral interactions of dipolar chains [J].

Furst, EM ;

Gast, AP .

PHYSICAL REVIEW E, 2000, 62 (05) :6916-6925

[6]

Hiemenz P., 2016, PRINCIPLES COLLOID S

[7] Optical switch devices using the magnetic fluid thin films [J].

Hong, CY .

JOURNAL OF MAGNETISM AND MAGNETIC MATERIALS, 1999, 201 :178-181

[8] Magneto-chromatic effects of tunable magnetic fluid grating [J].

Hong, CY ;

Horng, HE ;

Jang, IJ ;

Wu, JM ;

Lee, SL ;

Yeung, WB ;

Yang, HC .

JOURNAL OF APPLIED PHYSICS, 1998, 83 (11) :6771-6773

[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] Tunable optical switch using magnetic fluids [J].

Horng, HE ;

Chen, CS ;

Fang, KL ;

Yang, SY ;

Chieh, JJ ;

Hong, CY ;

Yang, HC .

APPLIED PHYSICS LETTERS, 2004, 85 (23) :5592-5594

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