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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">izmertech</journal-id><journal-title-group><journal-title xml:lang="ru">Измерительная техника</journal-title><trans-title-group xml:lang="en"><trans-title>Izmeritel`naya Tekhnika</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">0368-1025</issn><issn pub-type="epub">2949-5237</issn><publisher><publisher-name>ФГУП "ВНИИФТРИ"</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.32446/0368-1025it.2025-5-57-62</article-id><article-id custom-type="elpub" pub-id-type="custom">izmertech-2342</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>ТЕПЛОФИЗИЧЕСКИЕ ИЗМЕРЕНИЯ</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="en"><subject>THERMOPHYSIC MEASUREMENTS</subject></subj-group></article-categories><title-group><article-title>Методика определения оптической прозрачности плёнок полиимида различной толщины с помощью спектрометров высокого разрешения</article-title><trans-title-group xml:lang="en"><trans-title>The method of determining of optical transparency of polyimide films of various thicknesses using high-resolution spectrometers</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><contrib-id contrib-id-type="orcid">https://orcid.org/0000-0002-8369-6837</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Лапшинов</surname><given-names>Б. А.</given-names></name><name name-style="western" xml:lang="en"><surname>Lapshinov</surname><given-names>B. A.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Борис Алексеевич Лапшинов</p><p>Москва</p></bio><bio xml:lang="en"><p>Boris A. Lapshinov</p><p>Moscow</p></bio><email xlink:type="simple">lbaniipmt@mail.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/0000-0002-8666-1170</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Матвеев</surname><given-names>Е. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Matveev</surname><given-names>E. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Егор Владимирович Матвеев</p><p>Москва</p></bio><bio xml:lang="en"><p>Egor V. Matveev</p><p>Moscow</p></bio><email xlink:type="simple">maegor@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/0009-0006-2309-8452</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Гайдар</surname><given-names>А. И.</given-names></name><name name-style="western" xml:lang="en"><surname>Gaidar</surname><given-names>A. I.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Анна Ивановна Гайда</p><p>Москва</p></bio><bio xml:lang="en"><p>Anna I. Gaidar</p><p>Moscow</p></bio><email xlink:type="simple">a_i_g@bk.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/0000-0002-5158-1963</contrib-id><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Берестов</surname><given-names>В. В.</given-names></name><name name-style="western" xml:lang="en"><surname>Berestov</surname><given-names>V. V.</given-names></name></name-alternatives><bio xml:lang="ru"><p>Валентин Викторович Берестов</p><p>Москва</p></bio><bio xml:lang="en"><p>Valentin V. Berestov</p><p>Moscow</p></bio><email xlink:type="simple">vberestov97@gmail.com</email><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff-alternatives id="aff-1"><aff xml:lang="ru"><institution>ФГБНУ "Научно-исследовательский институт перспективных материалов и технологий"</institution><country>Россия</country></aff><aff xml:lang="en"><institution>Research Institute of Advanced Materials and Technology</institution><country>Russian Federation</country></aff></aff-alternatives><pub-date pub-type="collection"><year>2025</year></pub-date><pub-date pub-type="epub"><day>14</day><month>11</month><year>2025</year></pub-date><volume>74</volume><issue>5</issue><fpage>57</fpage><lpage>62</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; ФГУП "ВНИИФТРИ", 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">ФГУП "ВНИИФТРИ"</copyright-holder><copyright-holder xml:lang="en">ФГУП "ВНИИФТРИ"</copyright-holder><license xlink:href="https://www.izmt.ru/jour/about/submissions#copyrightNotice" xlink:type="simple"><license-p>https://www.izmt.ru/jour/about/submissions#copyrightNotice</license-p></license></permissions><self-uri xlink:href="https://www.izmt.ru/jour/article/view/2342">https://www.izmt.ru/jour/article/view/2342</self-uri><abstract><p>Разработана методика определения оптической прозрачности плёнок полиимида, используемых при изготовлении устройств гибкой электроники методом лазерной карбонизации. Информация об оптической прозрачности плёнок полиимида в видимом и ближнем инфракрасном диапазонах спектра позволяет выбрать оптимальный режим лазерной карбонизации. С применением источника калиброванного излучения и малогабаритных спектрометров высокого разрешения получены данные об интенсивности проходящего излучения сквозь плёнки полиимида различной толщины на нескольких тысячах длин волн в видимом и ближнем инфракрасном диапазонах спектра. Из полученного массива данных выбраны две рабочих длины волны твердотельных лазеров – 694,3 нм (рубиновый лазер) и 1064 нм (лазер на основе иттрий-алюминиевого граната с неодимом Nd:YAG). Построены зависимости коэффициентов пропускания плёнок полиимида толщиной 100, 200 и 300 мкм от этих длин волн. Показано, что аналогичные зависимости можно построить для лазеров всех типов, излучающих в указанных диапазонах спектра. Знание коэффициента пропускания полиимида на различных длинах волн поможет более точно исследовать и понять суть физико-химических процессов, происходящих в материале при воздействии на него лазерного излучения определённой длины волны. Предложенную методику определения оптической прозрачности плёнок полиимида можно применять для нахождения интенсивности пропускания любых полупрозрачных материалов, используемых в лазерной и других технологиях.</p></abstract><trans-abstract xml:lang="en"><p>The article presents a method for determining the optical transparency of polyimide films used in the manufacture of fl exible electronics devices by laser carbonization. Information about the optical transparency of polyimide films in the visible and near-infrared ranges of the spectrum allows you to choose the optimal mode of laser carbonization. Using a calibrated radiation source and small-sized high-resolution spectrometers, data on the intensity of transmitted radiation through polyimide films of various thicknesses at several thousand wavelengths in the visible and near-infrared spectral ranges were obtained. Two operating wavelengths of solid–state lasers were selected from the obtained data array: 694.3 nm (ruby laser) and 1064 nm (neodymium-doped yttrium aluminum garnet laser, Nd:YAG). The dependences of the transmission coefficients of polyimide films with a thickness of 100, 200 and 300 microns on these wavelengths are constructed. It is shown that similar dependences can be constructed for all types of lasers emitting in the specified spectral ranges. Knowledge of the transmission coefficient of polyimide at various wavelengths will help to more accurately investigate and understand the essence of the physico-chemical processes occurring in the material when exposed to laser radiation of a certain wavelength. The proposed method for determining the optical transparency of polyimide films can be used to find the transmission intensity of any translucent materials used in laser and other technologies.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>гибкая электроника</kwd><kwd>полимерные материалы</kwd><kwd>полиимид</kwd><kwd>лазерная карбонизация</kwd><kwd>световое излучение</kwd><kwd>коэффициент пропускания</kwd><kwd>оптическая прозрачность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>exible electronics</kwd><kwd>polymer materials</kwd><kwd>polyimide</kwd><kwd>laser carbonization</kwd><kwd>light radiation</kwd><kwd>transmission coefficient</kwd></kwd-group><funding-group><funding-statement xml:lang="ru">Иссле дования проведены в Научно-исследовательском институте перспективных материалов и технологий в рамках государственного задания по проекту FNER-2025-0002.</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">Лучин ин В. 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