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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">Доклады Академии наук</journal-id><journal-title-group><journal-title xml:lang="en">Доклады Академии наук</journal-title><trans-title-group xml:lang="ru"><trans-title>Доклады Академии наук</trans-title></trans-title-group></journal-title-group><issn publication-format="print">0869-5652</issn><publisher><publisher-name xml:lang="en">The Russian Academy of Sciences</publisher-name></publisher></journal-meta><article-meta><article-id pub-id-type="publisher-id">18839</article-id><article-id pub-id-type="doi">10.31857/S0869-56524895465-468</article-id><article-categories><subj-group subj-group-type="toc-heading" xml:lang="en"><subject>Technical Physics</subject></subj-group><subj-group subj-group-type="toc-heading" xml:lang="ru"><subject>Техническая физика</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">Effects of crystallinity on sintering of metal nanoparticles</article-title><trans-title-group xml:lang="ru"><trans-title>О механизмах коалесценции металлических нанокапель и спекания металлических наночастиц</trans-title></trans-title-group></title-group><contrib-group><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Samsonov</surname><given-names>V. M.</given-names></name><name xml:lang="ru"><surname>Самсонов</surname><given-names>В. М.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>samsonoff@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Talyzin</surname><given-names>I. V.</given-names></name><name xml:lang="ru"><surname>Талызин</surname><given-names>И. В.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>samsonoff@inbox.ru</email><xref ref-type="aff" rid="aff1"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Vasilyev</surname><given-names>S. A.</given-names></name><name xml:lang="ru"><surname>Васильев</surname><given-names>С. А.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><email>samsonoff@inbox.ru</email><xref ref-type="aff" rid="aff1"/><xref ref-type="aff" rid="aff2"/></contrib><contrib contrib-type="author"><name-alternatives><name xml:lang="en"><surname>Alymov</surname><given-names>M. I.</given-names></name><name xml:lang="ru"><surname>Алымов</surname><given-names>М. И.</given-names></name></name-alternatives><address><country country="RU">Russian Federation</country></address><bio xml:lang="en"><p>Corresponding Member of the Russian Academy of Sciences</p></bio><bio xml:lang="ru"><p>Член-корреспондент РАН</p></bio><email>samsonoff@inbox.ru</email><xref ref-type="aff" rid="aff2"/></contrib></contrib-group><aff-alternatives id="aff1"><aff><institution xml:lang="en">Tver State University</institution></aff><aff><institution xml:lang="ru">Тверской государственный университет</institution></aff></aff-alternatives><aff-alternatives id="aff2"><aff><institution xml:lang="en">Merzhanov Institute of Structural Macrokinetics and Material Sciences</institution></aff><aff><institution xml:lang="ru">Институт структурной макрокинетики и проблем материаловедения имени А.Г. Мержанова Российской академии наук</institution></aff></aff-alternatives><pub-date date-type="pub" iso-8601-date="2019-12-20" publication-format="electronic"><day>20</day><month>12</month><year>2019</year></pub-date><volume>489</volume><issue>5</issue><issue-title xml:lang="en"/><issue-title xml:lang="ru"/><fpage>465</fpage><lpage>468</lpage><history><date date-type="received" iso-8601-date="2019-12-21"><day>21</day><month>12</month><year>2019</year></date><date date-type="accepted" iso-8601-date="2019-12-21"><day>21</day><month>12</month><year>2019</year></date></history><permissions><copyright-statement xml:lang="en">Copyright ©; 2019, Russian academy of sciences</copyright-statement><copyright-statement xml:lang="ru">Copyright ©; 2019, Российская академия наук</copyright-statement><copyright-year>2019</copyright-year><copyright-holder xml:lang="en">Russian academy of sciences</copyright-holder><copyright-holder xml:lang="ru">Российская академия наук</copyright-holder></permissions><self-uri xlink:href="https://journals.eco-vector.com/0869-5652/article/view/18839">https://journals.eco-vector.com/0869-5652/article/view/18839</self-uri><abstract xml:lang="en"><p>Regularities and mechanisms of coalescence of Au nanodroplets and sintering of solid Au nanoparticles have been investigated by using molecular dynamics and some theoretical models. It has been established that the characteristic time of coalescence t is proportional to radius <italic>r</italic>0 of initial nanodroplets. Both the above conclusion and some quantitative estimations of the proportionality coefficient between t and <italic>r</italic>0 agree with Frenkel’s theory (1946) though this theory was rut forward to describe coalescence of macroscopic droplets.</p></abstract><trans-abstract xml:lang="ru"><p>С использованием молекулярно-динамического эксперимента и некоторых теоретических моделей исследованы закономерности коалесценции нанокапель Au и спекания твёрдых (кристаллических) наночастиц Au. Установлено, что характерное время коалесценции ℑ пропорционально радиусу исходных нанокапель <italic>r</italic><sub>0</sub>. Как сделанный вывод, так и количественные оценки коэффициента пропорциональности между ℑ и <italic>r</italic><sub>0</sub> согласуются с теорией Френкеля (1946), хотя эта теория была предложена для описания коалесценции макроскопических капель.</p></trans-abstract><kwd-group xml:lang="en"><kwd>coalescence</kwd><kwd>sintering</kwd><kwd>Au nanodroplet</kwd><kwd>Au nanoparticle</kwd><kwd>molecular dynamics</kwd><kwd>hydrodynamic theory</kwd></kwd-group><kwd-group xml:lang="ru"><kwd>коалесценция</kwd><kwd>спекание</kwd><kwd>нанокапля Au</kwd><kwd>наночастица Au</kwd><kwd>молекулярная динамика</kwd><kwd>гидродинамическая теория</kwd></kwd-group><funding-group><funding-statement xml:lang="en">This work was financially supported by the Ministry of Science and Higher Education of the Russian Federation as part of state assignment within the research work (Tver State University) and the Government Programme for ISMAN RAS (No. 45.5).</funding-statement><funding-statement xml:lang="ru">Работа выполнена при финансовой поддержке Министерства науки и высшего образования РФ в рамках выполнения государственного задания в сфере научной деятельности (Тверской государственный университет) и правительственной программы для ИСМАН РАН (тема 45.5).</funding-statement></funding-group></article-meta></front><body></body><back><ref-list><ref id="B1"><label>1.</label><mixed-citation>Sauerwald F. 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