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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">ntv</journal-id><journal-title-group><journal-title xml:lang="ru">Научно-технический вестник информационных технологий, механики и оптики</journal-title><trans-title-group xml:lang="en"><trans-title>Scientific and Technical Journal of Information Technologies, Mechanics and Optics</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2226-1494</issn><issn pub-type="epub">2500-0373</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2226-1494-2024-24-5-717-725</article-id><article-id custom-type="elpub" pub-id-type="custom">ntv-137</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>ОПТИЧЕСКИЕ СИСТЕМЫ И ТЕХНОЛОГИИ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>OPTICAL ENGINEERING</subject></subj-group></article-categories><title-group><article-title>Изменение оптических свойств поверхности серебра за счет лазерного структурирования</article-title><trans-title-group xml:lang="en"><trans-title>Change of optical properties of silver surface due to laser structuring</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0003-2329-1288</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Морозова</surname><given-names>А. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Morozova</surname><given-names>A. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Морозова Анастасия Алексеевна - студент, инженер</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Anastasia A. Morozova - Student, Engineer</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">aamorozova@itmo.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/0009-0001-8520-5579</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Капустина</surname><given-names>У. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Kapustina</surname><given-names>U. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Капустина Ульяна Александровна - студент</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Ulyana A. Kapustina - Student</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">kapustinaulya@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/0000-0003-3741-5819</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лутошина</surname><given-names>Д. С.</given-names></name><name name-style="western" xml:lang="en"><surname>Lutoshina</surname><given-names>D. S.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Лутошина Дарья Сергеевна - инженер</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Daria S. Lutoshina - Engineer</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">ld3282@itmo.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/0000-0001-9581-4290</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Романова</surname><given-names>Г. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Romanova</surname><given-names>G. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Романова Галина Викторовна - кандидат технических наук, директор института лазерных технологий</p><p>Санкт-Петербург, 197101</p></bio><bio xml:lang="en"><p>Galina V. Romanova - PhD, Director of the Laser Technologies Institute</p><p>Saint Petersburg, 197101</p></bio><email xlink:type="simple">gvromanova@itmo.ru</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>Университет ИТМО</institution><country>Россия</country></aff><aff xml:lang="en"><institution>ITMO University</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2024</year></pub-date><pub-date pub-type="epub"><day>13</day><month>12</month><year>2024</year></pub-date><volume>24</volume><issue>5</issue><fpage>717</fpage><lpage>725</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Морозова А.А., Капустина У.А., Лутошина Д.С., Романова Г.В., 2024</copyright-statement><copyright-year>2024</copyright-year><copyright-holder xml:lang="ru">Морозова А.А., Капустина У.А., Лутошина Д.С., Романова Г.В.</copyright-holder><copyright-holder xml:lang="en">Morozova A.A., Kapustina U.A., Lutoshina D.S., Romanova G.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://ntv.elpub.ru/jour/article/view/137">https://ntv.elpub.ru/jour/article/view/137</self-uri><abstract><p>Введение. Одной из главных задач ювелирной промышленности является придание эстетичного и художественного вида изделию. Это может достигаться путем изменения его цвета. Перспективным способом окрашивания драгоценных металлов является одноэтапный лазерный метод формирования наноструктур с плазмонными свойствами. Однако сегодня остается нерешенной проблема недостаточного понимания механизма формирования цветных покрытий. Поверхностные структуры обычно рассматриваются как набор отдельных сферических наночастиц. Для полного понимания происходящих физико-химических процессов необходимо рассматривать наночастицы в совокупности как агломераты наночастиц на поверхности.Методы и материалы. Для исследования выбран плоскопараллельный образец серебра 999,9 ювелирной пробы. Обработка поверхности серебра проводилась с помощью лазерного комплекса на базе иттербиевого волоконного лазера (ООО «Лазерный Центр», Санкт-Петербург, Россия) с наносекундной длительностью импульсов методом построчного сканирования по одной и двум осям сфокусированным лазерным пучком диаметром d0 = 50 мкм. Для характеризации поверхности серебра до и после лазерного воздействия использованы оптическая и сканирующая электронная микроскопии.Основные результаты. Исследовано влияние энергии в импульсе и частоты следования импульсов на оптические свойства поверхности серебра. Продемонстрирован процесс генерирования лазерно-модифицированных поверхностных наноструктур, характер их изменения при переходе от сканирования по одной оси к построчному сканированию. Показано, что изменение рельефа поверхности наблюдается и вне непосредственной зоны обработки. Отмечено неравномерное распределение наноструктурных элементов по поверхности обрабатываемой области, что приводит к неравномерности наблюдаемого цвета поверхности на микроуровне.Обсуждение. На основании анализа полученных данных предложена гипотеза формирования наноструктур. При воздействии лазерного излучения на поверхности серебра изначально формируются отдельные наночастицы шарообразной формы. Далее при увеличении температуры концентрация наночастиц значительно возрастает, что приводит к их слиянию и образованию из агломерированных наночастиц некоторых кластеров неправильной формы. Полученные новые данные о процессе формирования поверхностных наноструктур позволяют расширить понимание происходящих процессов, а также показывают возможность применения метода прямого лазерного окрашивания серебра в ювелирной промышленности.</p></abstract><trans-abstract xml:lang="en"><p>One of the main goals of jewelry is to give the product an aesthetic and artistic look. This can be achieved by changing its color. The promising methods of precious metal coloration is a one-step laser method of forming nanostructures with plasmonic properties. However, the lack of understanding of the mechanism of formation of color coatings remains an unresolved problem today. Surface structures are usually considered as a set of individual spherical nanoparticles. But to fully understand the physicochemical processes taking place, it is necessary to consider nanoparticles in aggregate as agglomerates of these nanoparticles on the surface. The silver samples of 99.99 % purity were selected for the study. Laser exposure was carried out in air using a system based on an ytterbium fiber laser with nanosecond pulse duration. The silver surface was processed by line-by-line scanning along one and two axes with a focused laser beam with the diameter d0 = 50 μm. Optical and scanning electron microscopy were used to characterize the silver surface before and after laser treatment. In this work, the effect of some laser exposure parameters, such as laser pulse energy and pulse repetition rate, on the optical properties of silver surface were investigated. The focus of this work is on generated laser-modified surface nanostructures and the character of their change when going from single axis scanning to line scanning. It is shown that surface topography changes are also observed in the region outside the immediate treatment zone. The uneven distribution of nanostructural elements on the surface of the treated area is registered, which causes the irregularity of the observed surface color at the microlevel. Based on the analysis of the obtained data, a hypothesis of nanostructure formation is proposed. Under laser exposure, individual spherical-shaped nanoparticles are initially formed on the silver surface. Then with increasing temperature their concentration increases significantly. This leads to their adhesion and formation of irregularly shaped clusters of agglomerated nanoparticles. The obtained new data on the process of formation of surface nanostructures allow us to expand the understanding of the ongoing processes, as well as to approach the integration of the method of direct laser coloring of silver in the jewelry industry.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>лазерное окрашивание</kwd><kwd>плазмонные наночастицы серебра</kwd><kwd>лазерная модификация</kwd><kwd>оптические характеристики</kwd><kwd>морфология поверхности</kwd></kwd-group><kwd-group xml:lang="en"><kwd>laser coloration</kwd><kwd>plasmonic silver nanoparticles</kwd><kwd>laser modification</kwd><kwd>optical characteristics</kwd><kwd>surface morphology</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Работа выполнена при поддержке программы «Приоритет 2030».</funding-statement><funding-statement xml:lang="en">This research was supported by the Priority 2030 Federal Academic Leadership Program.</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">Kristensen A., Yang J.K.W., Bozhevolnyi S.I., Link S., Nordlander P., Halas N.J., Mortensen N.A. 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