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<article 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" xmlns:ali="http://www.niso.org/schemas/ali/1.0/" article-type="research-article" dtd-version="1.2" xml:lang="en"><front><journal-meta><journal-id journal-id-type="publisher-id">Discrete and Continuous Models and Applied Computational Science</journal-id><journal-title-group><journal-title xml:lang="en">Discrete and Continuous Models and Applied Computational Science</journal-title><trans-title-group xml:lang="ru"><trans-title>Discrete and Continuous Models and Applied Computational Science</trans-title></trans-title-group></journal-title-group><issn publication-format="print">2658-4670</issn><issn publication-format="electronic">2658-7149</issn><publisher><publisher-name xml:lang="en">Peoples' Friendship University of Russia named after Patrice Lumumba (RUDN University)</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">8246</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Articles</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Статьи</subject></subj-group><subj-group subj-group-type="article-type"><subject>Research Article</subject></subj-group></article-categories><title-group><article-title xml:lang="en">Properties of Titanium Dioxide Thin Films, Fabricated by Gel Methods</article-title><trans-title-group xml:lang="ru"><trans-title>Свойства плёнок диоксида титана, изготовленных по гель-технологии</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Trofimov</surname><given-names>N S</given-names></name><name xml:lang="ru"><surname>Трофимов</surname><given-names>Николай Сергеевич</given-names></name></name-alternatives><bio xml:lang="en">Department of Applied Physics</bio><bio xml:lang="ru">Кафедра прикладной физики</bio><email>trofimov_ns@mail.ru</email><xref ref-type="aff" rid="aff1"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Peoples’ Friendship University of Russia</institution></aff><aff><institution xml:lang="ru">Российский университет дружбы народов</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2014-03-15" publication-format="electronic"><day>15</day><month>03</month><year>2014</year></pub-date><issue>3</issue><issue-title xml:lang="en">NO3 (2014)</issue-title><issue-title xml:lang="ru">№3 (2014)</issue-title><fpage>194</fpage><lpage>201</lpage><history><date date-type="received" iso-8601-date="2016-09-08"><day>08</day><month>09</month><year>2016</year></date></history><permissions><copyright-statement xml:lang="ru">Copyright ©; 2014, Трофимов Н.С.</copyright-statement><copyright-year>2014</copyright-year><copyright-holder xml:lang="ru">Трофимов Н.С.</copyright-holder><ali:free_to_read xmlns:ali="http://www.niso.org/schemas/ali/1.0/"/><license><ali:license_ref xmlns:ali="http://www.niso.org/schemas/ali/1.0/">http://creativecommons.org/licenses/by/4.0</ali:license_ref></license></permissions><self-uri xlink:href="https://journals.rudn.ru/miph/article/view/8246">https://journals.rudn.ru/miph/article/view/8246</self-uri><abstract xml:lang="en">Titanium dioxide films obtained by gel method are investigated. Optical properties of the fabricated films, such as thickness, refractive index and thermo-optic coefficient were studied by the methods of integrated optics which use waveguide propagation of radiation along the film. The parameters of the films fabricated by sol-gel and gel methods were compared. It was established that the pores in the films made by gel method contain smaller amounts of water and therefore have higher density. Refractive index of gel films was determined by the resonant angle of the waveguide excitation, calculated using the optical waveguide dispersion equations and amounted to 2.1-2.4. This value is higher than in the case of using sol-gel technology for fabrication of thin films (1.5-1.8). By the reflection and transmission spectra obtained using spectrophotometer, it was found that films produced under cetrain parameters of technological regime have anisotropic properties. It was established that the presence of anisotropy is due to the structure of the film in the form of a linear oligomer. The structure and morphology of the gel films was studied by electron microscopy. It is shown that the resulting films have a porous structure that allows their doping with substances allowing to create elements of integrated optics, such as lasers, amplifiers, etc.</abstract><trans-abstract xml:lang="ru">Исследованы плёнки диоксида титана, полученные гель-методом. Проведено изучение оптических свойств изготовленных плёнок, таких как толщина, показатель преломления и термооптический коэффициент, с помощью методов интегральной оптики, использующих волноводное распространение излучения вдоль плёнки. Проведено сравнение параметров изготовленных плёнок золь-гель и гель методами. Установлено, что поры в плёнках, изготовленных гель-методом, содержат меньшее количество воды и поэтому обладают большей плотностью. Показатель преломления гель-плёнок был определён по резонансному углу возбуждения волновода, рассчитан с помощью дисперсионных уравнений оптического волновода и составил 2,1-2,4. Это значение выше, чем в случае золь-гель-технологии получения тонких плёнок (1,5-1,8). По спектрам пропускания и отражения, полученных с помощью спектрофотометра, было установлено наличие анизотропии в плёнках, изготовленных при определённых параметрах технологического режима. Установлено, что наличие анизотропии связано со структурой плёнки в виде линейного олигомера. Строение и морфология гель плёнок была исследована методами электронной микроскопии. Показано, что полученные плёнки имеют пористую структуру, что допускает легирование их веществами, позволяющими создавать элементы интегральной оптики, такие как лазеры, усилители и др.</trans-abstract><kwd-group xml:lang="en"><kwd>thin films</kwd><kwd>titanium dioxide (TiO2)</kwd><kwd>sol-gel and gel process</kwd><kwd>integrated optics</kwd><kwd>birefringence</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>тонкие плёнки</kwd><kwd>диоксид титана (TiO2)</kwd><kwd>золь-гель и гель технология</kwd><kwd>интегральная оптика</kwd><kwd>двулучепреломление</kwd></kwd-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>A.S. van Popta, J. Cheng, J.C. Sit, et al., Thermal Annealing of Birefringent TiO2 Thin Films Formed by Oblique-Angle Deposition, in: Proc. SPIE 6647, Nanocoatings, 66470C. September 10, 2007.</mixed-citation></ref><ref id="B2"><label>2.</label><mixed-citation>S. Mezhenny, P. Maksymovych, T. L. 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