The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying

Drop casting is a widely used approach for surface modification and the creation of functional coatings. Drying of sessile droplets is often associated with a so-called coffee-ring effect which originates from a non-uniform evaporation rate in the liquid–air and results in the formation of non-plana...

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Главные авторы:	Dikansky, Y. I., Диканский, Ю. И., Semenova, S. A., Семенова, С. А.
Формат:	Статья
Язык:	English
Опубликовано:	2023
Темы:	Magnetic fluids Electrophoresis Coffee-ring effect Magnetophoresis
Online-ссылка:	https://dspace.ncfu.ru/handle/20.500.12258/23741
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id	ir-20.500.12258-23741
record_format	dspace
spelling	ir-20.500.12258-237412025-02-11T11:43:21Z The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying Dikansky, Y. I. Диканский, Ю. И. Semenova, S. A. Семенова, С. А. Magnetic fluids Electrophoresis Coffee-ring effect Magnetophoresis Drop casting is a widely used approach for surface modification and the creation of functional coatings. Drying of sessile droplets is often associated with a so-called coffee-ring effect which originates from a non-uniform evaporation rate in the liquid–air and results in the formation of non-planar deposits. In the last two decades, this phenomenon attracted a lot of attention as a potential approach towards surface modification and structuring, resulting in an increased interest to control the morphology of the formed deposits. Here, we describe the effect of magnetic and electric fields individually and in combination on the processes of deposit formation for drops of water- or kerosene-based magnetic fluids. For the water-based fluid, the relative inner deposit density showed a linear dependence on the applied electric potential in the range from −5 to +5 V and varied from 100% to 31%, while kerosene-based fluid did not respond to the electric field. The combination of electric and magnetic fields allowed more complex control over the morphology of the deposits and to separate the annular deposit from the main one by the rim up to 0.3 mm. The theoretical basis behind the observed effects is discussed. 2023-06-28T14:45:07Z 2023-06-28T14:45:07Z 2023 Статья Dikansky, Y.I., Semenova, S.A., Drozdov, A.S. The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying // Coatings. - 2023. - 13(3), 540. - DOI: 10.3390/coatings13030540 http://hdl.handle.net/20.500.12258/23741 en Coatings application/pdf application/pdf
institution	СКФУ
collection	Репозиторий
language	English
topic	Magnetic fluids Electrophoresis Coffee-ring effect Magnetophoresis
spellingShingle	Magnetic fluids Electrophoresis Coffee-ring effect Magnetophoresis Dikansky, Y. I. Диканский, Ю. И. Semenova, S. A. Семенова, С. А. The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
description	Drop casting is a widely used approach for surface modification and the creation of functional coatings. Drying of sessile droplets is often associated with a so-called coffee-ring effect which originates from a non-uniform evaporation rate in the liquid–air and results in the formation of non-planar deposits. In the last two decades, this phenomenon attracted a lot of attention as a potential approach towards surface modification and structuring, resulting in an increased interest to control the morphology of the formed deposits. Here, we describe the effect of magnetic and electric fields individually and in combination on the processes of deposit formation for drops of water- or kerosene-based magnetic fluids. For the water-based fluid, the relative inner deposit density showed a linear dependence on the applied electric potential in the range from −5 to +5 V and varied from 100% to 31%, while kerosene-based fluid did not respond to the electric field. The combination of electric and magnetic fields allowed more complex control over the morphology of the deposits and to separate the annular deposit from the main one by the rim up to 0.3 mm. The theoretical basis behind the observed effects is discussed.
format	Статья
author	Dikansky, Y. I. Диканский, Ю. И. Semenova, S. A. Семенова, С. А.
author_facet	Dikansky, Y. I. Диканский, Ю. И. Semenova, S. A. Семенова, С. А.
author_sort	Dikansky, Y. I.
title	The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
title_short	The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
title_full	The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
title_fullStr	The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
title_full_unstemmed	The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying
title_sort	influence of electric and magnetic fields on the structure of flat drops of magnetic fluids upon drying
publishDate	2023
url	https://dspace.ncfu.ru/handle/20.500.12258/23741
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The Influence of Electric and Magnetic Fields on the Structure of Flat Drops of Magnetic Fluids upon Drying

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