scholarly journals A magnetic field and temperature two-parameter sensor based on optical microfiber coupler interference (OMCI) wrapped with magnetic fluid and PDMS

2021 ◽  
Author(s):  
Shangpeng Qin ◽  
YangJun Lu ◽  
Yang Yu ◽  
Minwei Li ◽  
Junbo Yang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Optical Microfiber ◽  
Two Parameter

scholarly journals Magnetic Field Sensing Characteristics Based on Optical Microfiber Coupler Interferometer and Magnetic Fluid

Photonics ◽  
2021 ◽  
Vol 8 (9) ◽  
pp. 364
Author(s):  
Shangpeng Qin ◽  
Junyang Lu ◽  
Minwei Li ◽  
Yang Yu ◽  
Junbo Yang ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Low Cost ◽  
High Sensitivity ◽  
Intelligent Manufacturing ◽  
Response Characteristics ◽  
Application Potential ◽  
Optical Microfiber ◽  
Sensing Characteristics ◽  
Waist Radius

In this paper, a novel and compact magnetic field sensor based on the combination of an optical microfiber coupler interferometer (OMCI) and magnetic fluid (MF) is proposed. The sensor is made up of an OMCI cover with polydimethylsiloxane (PDMS) and MF, and it uses MF as a material for adjusting the magnetic refractive index and magnetic field response. The sensing characteristics of the sensor are analyzed, and the experimental test is carried out. Under the condition of the same OMC waist length, the sensor sensitivity increases with the decrease of the OMC waist radius. The sensitivity of 54.71 and 48.21 pm/Oe was obtained when the OMC waist radius was set at 3.5 and 4 μm, respectively. In addition, we also tested the sensing response time and vector response characteristics of the sensor. At the same time, we discuss the demodulation idea about the cross-sensitivity of the magnetic field and temperature. The sensor has the advantages of high sensitivity, low cost, small size, optimized performance, and convenient integration. It has huge application potential in the fields of navigation and industrial intelligent manufacturing.

Surface of a magnetic fluid containing magnetizable bodies in an applied uniform magnetic field

2008 ◽  
Vol 44 (2) ◽  
pp. 175-182 ◽  
Author(s):  
K. Zimmermann ◽  
V.A. Naletova ◽  
I. Zeidis ◽  
V.A. Turkov ◽  
D.A. Pelevina ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Uniform Magnetic Field

A novel magnetic field fiber sensor by using magnetic fluid in Sagnac loop

2011 ◽  
Author(s):  
Peng Zu ◽  
Chi Chiu Chan ◽  
Yongxing Jin ◽  
Yifan Zhang ◽  
Xinyong Dong
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Fiber Sensor

Vector magnetic field measurement based on magnetic fluid and high-order cladding-mode Bragg grating

2021 ◽  
Vol 143 ◽  
pp. 107264
Author(s):  
Junying Zhang ◽  
Fengyi Chen ◽  
Ruohui Wang ◽  
Xueguang Qiao ◽  
Haibin Chen ◽  
...  
Keyword(s):  
Magnetic Field ◽  
Magnetic Fluid ◽  
Field Measurement ◽  
High Order ◽  
Bragg Grating ◽  
Magnetic Field Measurement ◽  
Vector Magnetic Field ◽  
Cladding Mode

scholarly journals Magnetoviscosity of a Magnetic Fluid Based on Barium Hexaferrite Nanoplates

Materials ◽  
2021 ◽  
Vol 14 (8) ◽  
pp. 1870
Author(s):  
Dmitry Borin ◽  
Robert Müller ◽  
Stefan Odenbach
Keyword(s):  
Magnetic Field ◽  
Experimental Study ◽  
Magnetic Nanoparticles ◽  
External Magnetic Field ◽  
Shear Flow ◽  
Magnetic Fluid ◽  
Barium Hexaferrite ◽  
Dipole Interaction ◽  
Field Dependent ◽  
Fluid Behaviour

This paper presents the results of an experimental study of the influence of an external magnetic field on the shear flow behaviour of a magnetic fluid based on barium hexaferrite nanoplates. With the use of rheometry, the magnetoviscosity and field-dependent yield-stress in the fluid are evaluated. The observed fluid behaviour is compared to that of ferrofluids with magnetic nanoparticles having high dipole interaction. The results obtained supplement the so-far poorly studied topic of the influence of magnetic nanoparticles’ shape on magnetoviscous effects. It is concluded that the parameter determining the observed magnetoviscous effects in the fluid under study is the ratio V2/l3, where V is the volume of the nanoparticle and l is the size of the nanoparticle in the direction corresponding to its orientation in the externally applied magnetic field.

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