Change in the intensity of light scattering in a magnetite colloid under the simultaneous action of electric and magnetic fields

Magnetic Nanorods for Optofluidic Applications

“…where f is the frequency of the rotating magnetic field B, and θ is the angle formed by the nanorod with the field direction. The drag coefficient γ is determined by the nanorod length l, its is the nanorod volume, and combining equations (2) and (4) we see that the dimensionless critical frequency does not depend on the particular size of the nanorod, but only on its aspect ratio:…”

“…When a magnetic field is applied to this fluid, the material becomes optically anisotropic, and different magneto-optical effects can be observed. Specifically, optical birefringence, Faraday rotation, dichroism and different types of light scattering were studied [2][3][4][5]. One of the most important effects is the diffraction pattern discovered by Haas [6].…”

Preparation and Examination of a Composite Demulsifier for Paraffin Base Oil

“…To determine the ability to form critical emulsions in water and hexane, the dependence of the optical density of the solution on temperature was studied by using the method specified by Yerin and Kunikin [27].…”

Spectral Dependencies of Magnetooptical Effects in Magnetic Fluids

“…Subsequently, magnetic fluids have received a wide range of applications, such as: magnetic fluid dampers, bearings and seals [4], micromechanical systems [5], non-destructive testing devices [6], microfluidics devices [7], biosensors for studying cellular toxicity, and systems for treating oncological diseases by the method of hyperthermia [11], etc. Magnetic fluids under the influence of a magnetic field exhibit some different optical effects, such as birefringence [12][13], linear and circular dichroism [14], Faraday rotation and ellipticity [15], changes in the intensity of transmitted, scattered and reflected light [16][17], etc. Due to these effects, magnetic fluids are used in various magneto-optical devices: optical filters, limiters and gates, waveguides and fiber-optic modulators, diffraction gratings with a controlled period, optical sensors of magnetic field, static and dynamic displays, etc.…”

“…When studying the spectral dependences of optical effects in magnetic fluids, transmission spectra are mainly studied [19]. The spectra of the effects of magnetic birefringence and dichroism were studied in [13,20]. For the theoretical interpretation of optical effects in magnetic colloids and predicting the properties of magneto-optical devices, accurate data on the optical properties of colloidal particles and a dispersion medium are required.…”