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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="en"><front><journal-meta><journal-id journal-id-type="publisher-id">najo</journal-id><journal-title-group><journal-title xml:lang="en">Nanosystems: Physics, Chemistry, Mathematics</journal-title><trans-title-group xml:lang="ru"><trans-title>Наносистемы: физика, химия, математика</trans-title></trans-title-group></journal-title-group><issn pub-type="ppub">2220-8054</issn><issn pub-type="epub">2305-7971</issn><publisher><publisher-name>Университет ИТМО</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="doi">10.17586/2220-8054-2021-12-5-575-582</article-id><article-id custom-type="elpub" pub-id-type="custom">najo-517</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="en"><subject>PHYSICS</subject></subj-group><subj-group subj-group-type="section-heading" xml:lang="ru"><subject>ФИЗИКА</subject></subj-group></article-categories><title-group><article-title>Surface plasmon resonance optical sensor for COVID-19 detection</article-title><trans-title-group xml:lang="ru"><trans-title>Оптический датчик на базе поверхностного плазмонного резонанса для обнаружения COVID-19</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Zain</surname><given-names>H. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Zain</surname><given-names>H. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>50603 Kuala Lumpur, Malaysia</p></bio><xref ref-type="aff" rid="aff-1"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Batumalay</surname><given-names>M.</given-names></name><name name-style="western" xml:lang="en"><surname>Batumalay</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="en"><p>71800 Nilai, Negeri Sembilan</p></bio><xref ref-type="aff" rid="aff-2"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Rahim</surname><given-names>H. R. A.</given-names></name><name name-style="western" xml:lang="en"><surname>Rahim</surname><given-names>H. R. A.</given-names></name></name-alternatives><bio xml:lang="en"><p>Melaka</p></bio><xref ref-type="aff" rid="aff-3"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Harith</surname><given-names>Z.</given-names></name><name name-style="western" xml:lang="en"><surname>Harith</surname><given-names>Z.</given-names></name></name-alternatives><bio xml:lang="en"><p>71800 Nilai, Negeri Sembilan</p></bio><xref ref-type="aff" rid="aff-4"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Yasin</surname><given-names>M.</given-names></name><name name-style="western" xml:lang="en"><surname>Yasin</surname><given-names>M.</given-names></name></name-alternatives><bio xml:lang="en"><p>Surabaya</p></bio><xref ref-type="aff" rid="aff-5"/></contrib><contrib contrib-type="author" corresp="yes"><name-alternatives><name name-style="eastern" xml:lang="ru"><surname>Harun</surname><given-names>S. W.</given-names></name><name name-style="western" xml:lang="en"><surname>Harun</surname><given-names>S. W.</given-names></name></name-alternatives><bio xml:lang="en"><p>50603 Kuala Lumpur</p></bio><xref ref-type="aff" rid="aff-1"/></contrib></contrib-group><aff xml:lang="en" id="aff-1"><institution>Photonics Engineering Laboratory, Department of Electrical Engineering, University of Malaya</institution><country>Malaysia</country></aff><aff xml:lang="en" id="aff-2"><institution>Faculty of IT, INTI International University</institution><country>Malaysia</country></aff><aff xml:lang="en" id="aff-3"><institution>Faculty of Electronic and Computer Engineering, Universiti Teknikal Malaysia Melaka</institution><country>Malaysia</country></aff><aff xml:lang="en" id="aff-4"><institution>Faculty of Engineering and QS, INTI International University</institution><country>Malaysia</country></aff><aff xml:lang="en" id="aff-5"><institution>Department of Physics, Faculty of Science and Technology, Airlangga University</institution><country>Indonesia</country></aff><pub-date pub-type="collection"><year>2021</year></pub-date><pub-date pub-type="epub"><day>05</day><month>08</month><year>2025</year></pub-date><volume>12</volume><issue>5</issue><fpage>575</fpage><lpage>582</lpage><permissions><copyright-statement>Copyright &amp;#x00A9; Zain H.A., Batumalay M., Rahim H.A., Harith Z., Yasin M., Harun S.W., 2025</copyright-statement><copyright-year>2025</copyright-year><copyright-holder xml:lang="ru">Zain H.A., Batumalay M., Rahim H., Harith Z., Yasin M., Harun S.W.</copyright-holder><copyright-holder xml:lang="en">Zain H.A., Batumalay M., Rahim H.A., Harith Z., Yasin M., Harun S.W.</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://nanojournal.ifmo.ru/jour/article/view/517">https://nanojournal.ifmo.ru/jour/article/view/517</self-uri><abstract><p>The transmission of SARS-CoV-2, the novel severe acute respiratory syndrome corona virus have caused the corona virus disease (Covid-19) worldwide pandemic. Overcoming this pandemic requires identifying patients to avoid further spread of the disease. Real-time, sensitive, and costefﬁcient methods for detecting the COVID-19 virus are crucial. Optical sensors provide one such means to achieve this, especially using surface plasmon resonance due to its advantages such as high sensitivity and excellent detection limits. In this paper, we propose a sensor for COVID-19 detection which is based on a simple Kretschmann conﬁguration with gold layers and thiol-tethered DNA for the ligand layer. Angle interrogation was used to obtain the sensitivity of this structure using Matlab numerical analysis. The performance of the sensor was investigated with two types of prisms, SF10 and SF11, while varying the gold layer thickness between 45 – 60 nm. This information was then used to determine which combination of prism and gold thickness are ideal for detecting COVID-19 using thiol-tethered DNA. Thiol-tethered DNA layer sensor showed the highest sensitivity of 137 degree/RIU when a SF10 prism was used with a 50 – 60 nm gold layer and thiol tethered DNA layer.</p></abstract><trans-abstract xml:lang="ru"><p>Передача SARS-CoV-2, нового коронирусного вируса тяжелого острого респираторного синдрома, вызвала всемирную пандемию коронавирусной болезни (Covid-19). Преодоление этой пандемии требует выявления пациентов, чтобы избежать дальнейшего распространения болезни. Решающее значение имеют чувствительные и экономичные методы обнаружения вируса COVID-19 в режиме реального времени. Одним из таких средств для достижения этого являются оптические датчики, особенно с использованием поверхностного плазмонного резонанса из-за его преимуществ, таких как высокая чувствительность и отличные пределы обнаружения. В этой статье мы предлагаем датчик для обнаружения COVID-19, основанный на простой конфигурации Кречмана со слоями золота и ДНК, связанной с тиолами, для слоя лиганда. Угловой проверка была использована для получения чувствительности этой структуры с использованием численного анализа Matlab. Работа датчика исследовалась с двумя типами призм, SF10 и SF11, при изменении толщины слоя золота в пределах 45-60 нм. Затем эта информация использовалась для определения того, какая комбинация призмы и толщины золота идеально подходит для обнаружения COVID-19 с использованием ДНК, связанной тиолом. Датчик слоя ДНК, связанный тиолом, показал самую высокую чувствительность 137 градусов/RIU, когда использовалась призма SF10 со слоем золота 50–60 нм и слоем ДНК, связанной тиолом.</p></trans-abstract><kwd-group xml:lang="ru"><kwd>оптические сенсоры</kwd><kwd>COVID-19</kwd><kwd>поверхностный плазмонный резонанс</kwd><kwd>плазмоника</kwd><kwd>энергоэффективность</kwd></kwd-group><kwd-group xml:lang="en"><kwd>optical sensors</kwd><kwd>COVID-19</kwd><kwd>surface plasmon resonance</kwd><kwd>plasmonic</kwd><kwd>energy efficiency</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was supported by the Airlangga University Research Grant (2021) and the University of Malaya (Grant No: ST036-2020).</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">MenniC., Valdes A.M., et al. 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