Magnetic-Field-Controlled Photoinduced Thermocapillary Deformation of Magnetic Fluid Surface

The influence of a magnetic field on the features of photoinduced thermocapillary deformation of the free surface of a magnetic fluid layer is considered for the first time. Deformation occurs as a result of local heating of the surface under the action of an incident laser beam and manifests itself...

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Bibliographic Details
Published inColloid journal of the Russian Academy of Sciences Vol. 82; no. 5; pp. 507 - 512
Main Authors Dikanskii, Yu. I., Zakinyan, A. R., Mkrtchyan, V. D., Usmanov, G. Kh
Format Journal Article
LanguageEnglish
Published Moscow Pleiades Publishing 01.09.2020
Springer Nature B.V
Subjects
Chemistry
Chemistry and Materials Science
Deformation
Free surfaces
Laser beam heating
Magnetic fields
Magnetic fluids
Polymer Sciences
Shape effects
Spatial distribution
Surfaces and Interfaces
Thin Films
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Summary:The influence of a magnetic field on the features of photoinduced thermocapillary deformation of the free surface of a magnetic fluid layer is considered for the first time. Deformation occurs as a result of local heating of the surface under the action of an incident laser beam and manifests itself as a curvature of the fluid surface profile. The laser beam reflected from the deformed surface exhibits a nonuniform spatial distribution of the radiation intensity in the form of concentric rings. An external magnetic field has an addition effect on the shape of the free surface of the magnetic fluid, thereby making it possible to control the photoinduced thermocapillary deformation. The geometric characteristics and time evolution of the interference pattern of the thermocapillary response are experimentally studied as depending on the strength and orientation of the magnetic field.
ISSN:1061-933X
1608-3067
DOI:10.1134/S1061933X2005004X