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<article article-type="research-article" dtd-version="1.3" xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xml:lang="ru"><front><journal-meta><journal-id journal-id-type="publisher-id">techusgu</journal-id><journal-title-group><journal-title xml:lang="ru">Известия Юго-Западного государственного университета. Серия: Техника и технологии</journal-title><trans-title-group xml:lang="en"><trans-title>Proceedings of the Southwest State University. Series: Engineering and Technology</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2223-1528</issn><publisher><publisher-name>Юго-Западный государственный университет</publisher-name></publisher></journal-meta><article-meta><article-id custom-type="elpub" pub-id-type="custom">techusgu-117</article-id><article-categories><subj-group subj-group-type="heading"><subject>Research Article</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>PHYSICS</subject></subj-group></article-categories><title-group><article-title>Влияние структуры и параметров магнитной жидкости  на магнитофорез в тонком слое</article-title><trans-title-group xml:lang="en"><trans-title>Influence of the Structure and Parameters of a Magnetic Fluid  on Magnetophoresis in a thin Layer</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-7712-0682</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Ряполов</surname><given-names>П. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Ryapolov</surname><given-names>P. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Ряполов Петр Алексеевич, кандидат физикоматематических наук, доцент, декан естественно-научного факультета</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Petr A. Ryapolov, Сand. of Sci. (Physics and Mathematics), Associate Professor, Dean of the Faculty of Science</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">r-piter@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-9674-5968</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Полунин</surname><given-names>В. М.</given-names></name><name name-style="western" xml:lang="en"><surname>Polunin</surname><given-names>V. M.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Полунин Вячеслав Михайлович, доктор  физико-математических наук, профессор,  профессор кафедры нанотехнологий,  общей и прикладной физики</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Vyacheslav M. Polunin, Dr. of Sci. (Physics  and Mathematics), Professor, Professor of the Department of Nanotechnology, General  and Applied Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">poluninvm1@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0001-5980-2938</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Баштовой</surname><given-names>В. Г.</given-names></name><name name-style="western" xml:lang="en"><surname>Bashtovoi</surname><given-names>V. G.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Баштовой Виктор Григорьевич, доктор физико-математических наук, профессор, заведующий кафедрой ЮНЕСКО «Энергосбережение и возобновляемые источники энергии»</p><p>пр. Независимости, 65, г. Минск, 220013</p></bio><bio xml:lang="en"><p>Victor G. Bashtovoi, Dr. of Sci. (Physics  and Mathematics), Professor, Head of the UNESCO Chair "Energy Saving and Renewable Energy Sources"</p><p>65 Independence aven., Minsk 220013</p></bio><email xlink:type="simple">bashtovoi@bntu.by</email><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Соколов</surname><given-names>Е. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Sokolov</surname><given-names>E. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Соколов Евгений Александрович, аспирант кафедры нанотехнологий, общей и прикладной физики</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Evgeny A. Sokolov, Post-Graduate Student  of the Department of Nanotechnology, General and Applied Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">evgeniysokolov1@yandex.ru</email><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Шельдешова</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Shel’deshova</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Шельдешова Елена Владимировна, аспирант кафедры нанотехнологий, общей и прикладной физики</p><p>ул. 50 лет Октября, 94, г. Курск, 305040</p></bio><bio xml:lang="en"><p>Elena V. Shel’deshova, Post-Graduate Student  of the Department of Nanotechnology, General  and Applied Physics</p><p>50 Let Oktyabrya str. 94, Kursk 305040</p></bio><email xlink:type="simple">blackberry__@mail.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Юго-Западный государственный университет</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Southwest State  University</institution><country>Russian Federation</country></aff></aff-alternatives><aff-alternatives id="aff-2"><aff xml:lang="ru"><institution>Белорусский национальный технический университет</institution><country>Беларусь</country></aff><aff xml:lang="en"><institution>Belarusian National Technical University</institution><country>Belarus</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>02</day><month>05</month><year>2023</year></pub-date><volume>11</volume><issue>1</issue><fpage>77</fpage><lpage>92</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Ряполов П.А., Полунин В.М., Баштовой В.Г., Соколов Е.А., Шельдешова Е.В., 2023</copyright-statement><copyright-year>2023</copyright-year><copyright-holder xml:lang="ru">Ряполов П.А., Полунин В.М., Баштовой В.Г., Соколов Е.А., Шельдешова Е.В.</copyright-holder><copyright-holder xml:lang="en">Ryapolov P.A., Polunin V.M., Bashtovoi V.G., Sokolov E.A., Shel’deshova E.V.</copyright-holder><license xml:lang="ru" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>Данная работа распространяется под лицензией Creative Commons Attribution 4.0.</license-p></license><license xml:lang="en" license-type="creative-commons-attribution" xlink:href="https://creativecommons.org/licenses/by/4.0/" xlink:type="simple"><license-p>This work is licensed under a Creative Commons Attribution 4.0 License.</license-p></license></permissions><self-uri xlink:href="https://techusgu.elpub.ru/jour/article/view/117">https://techusgu.elpub.ru/jour/article/view/117</self-uri><abstract><p>Целью работы является исследование во внешних градиентных магнитных полях закономерности процессов магнитофореза в магнитных жидкостях в тонких оптически прозрачных слоях и их взаимосвязь со структурированием и параметрами магнитожидкостной системы.  </p><sec><title>Методы</title><p>Методы. Для изучения влияния структуры и параметров магнитной жидкости на динамику процесса магнитофореза был создан комплект экспериментальных установок по длительному воздействию неоднородных магнитных полей различной конфигурации. В качестве образцов исследовались образцы магнитной жидкости с различным дисперсным составом, в том числе и нецентрифугированные, содержащие крупные магнитные частицы.  </p></sec><sec><title>Результаты</title><p>Результаты. В образцах магнитной жидкости с различным дисперсным составом исследовано явление магнитофореза в тонком слое в неоднородных магнитных полях различной конфигурации, создаваемых кольцевым постоянным магнитом, а также осевой магнитной системой на основе униполярных магнитов. На основе феноменологических уравнений магнитофореза и броуновской диффузии предложена теоретическая интерпретация динамики процесса магнитофореза в магнитожидкостных системах в неоднородном магнитном поле. </p></sec><sec><title>Заключение</title><p>Заключение. Установлено, что для образца, содержащего более крупные магнитные наночастицы, процесс магнитофореза протекает в 5 раз быстрее. Разработаны методы исследования магнитофореза в магнитных жидкостях в неоднородных магнитных полях различной конфигурации, которые применимы для оценки размеров магнитных частиц и стабильности магнитных жидкостей, изучения процессов расслоения и структурообразования в них при продолжительном воздействии высокоградиентных магнитных полей. </p></sec></abstract><trans-abstract xml:lang="en"><p>The purpose of the work is to study in external gradient magnetic fields the regularities of magnetophoresis processes in magnetic fluids in thin optically transparent layers and their relationship with the structuring and parameters of the magnetic fluid system.  </p><sec><title>Metods</title><p>Metods. To study the influence of the structure and parameters of a magnetic fluid on the dynamics of the magnetophoresis process, a set of experimental installations was created for the long-term effect of inhomogeneous magnetic fields of various configurations. As the images, the images of magnetic fluid with different dispersed composition were studied, including non-centrifuged ones containing large magnetic particles. </p></sec><sec><title>Results</title><p>Results. In magnetic fluid samples with different dispersed composition, the phenomenon of magnetophoresis in a thin layer in inhomogeneous magnets of various configurations, created by an annular permanent magnet, as well as an axial magnetic system based on unipolar magnets, has been investigated. Based on the phenomenological equations of magnetophoresis and Brownian diffusion, a theoretical interpretation of the dynamics of the magnetophoresis process in magnetic fluid systems in an inhomogeneous magnetic field is proposed. </p></sec><sec><title>Conclusion</title><p>Conclusion. It was found that for a sample containing larger magnetic nanoparticles, the magnetophoresis process proceeds 5 times faster. Methods and installations for the study of magnetophoresis in magnetic fluids in inhomogeneous magnetic fields of various configurations have been developed, which are applicable to assess the size of magnetic particles and the stability of magnetic fluids, to study the processes of separation and structure formation in them under prolonged exposure to high-gradient magnetic fields.  </p></sec></trans-abstract><kwd-group xml:lang="ru"><kwd>магнитная жидкость</kwd><kwd>неоднородное поле</kwd><kwd>магнитофорез</kwd><kwd>магнитная диффузия</kwd><kwd>структура</kwd><kwd>слабосвязанные агрегаты</kwd></kwd-group><kwd-group xml:lang="en"><kwd>magnetic fluid</kwd><kwd>inhomogeneous field</kwd><kwd>magnetophoresis</kwd><kwd>magnetic diffusion</kwd><kwd>structure</kwd><kwd>loosely coupled aggregates</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Публикация подготовлена в рамках выполнения государственного задания на 2020 г. (номер 0851-2020-0035).</funding-statement><funding-statement xml:lang="en">The publication was prepared as part of the state task for 2020 (number 0851-2020-0035).</funding-statement></funding-group></article-meta></front><back><ref-list><title>References</title><ref id="cit1"><label>1</label><citation-alternatives><mixed-citation xml:lang="ru">Налетова В. А., Шкель И. А. Сила, действующая на тело со стороны магнитной жидкости в неоднородном магнитном поле // Магнитная гидродинамика. 1987. Т. 23, № 2. С. 67–70.</mixed-citation><mixed-citation xml:lang="en">Naletova V. A., Shkel I. A. Sila, deistvuyushchaya na telo so storony magnitnoi zhidkosti v neodnorodnom magnitnom pole [Force acting on the body from the side of a magnetic fluid in an inhomogeneous magnetic field]. 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