August 6, 2020 Journal article Open Access

Dzmitry V. Yakimchuk; Victoria D. Bundyukova; Jon Ustarroz; Herman Terryn; Kitty Baert; Artem L. Kozlovskiy; Maxim V. Zdorovets; Soslan A. Khubezhov; Alex V. Trukhanov; Sergei V. Trukhanov; Larissa V. Panina; Grigory M. Arzumanyan; Kahramon Z. Mamatkulov; Daria I. Tishkevich; Egor Y. Kaniukov; Vladimir Sivakov

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    <subfield code="a">&lt;p&gt;The modern development of nanotechnology requires the discovery of simple approaches that ensure the controlled formation of functional nanostructures with a predetermined morphology. One of the simplest approaches is the self-assembly of nanostructures. The widespread implementation of self-assembly is limited by the complexity of controlled processes in a large volume where, due to the temperature, ion concentration, and other thermodynamics factors, local changes in diffusion-limited processes may occur, leading to unexpected nanostructure growth. The easiest ways to control the diffusion-limited processes are spatial limitation and localized growth of nanostructures in a porous matrix. In this paper, we propose to apply the method of controlled self-assembly of gold nanostructures in a limited pore volume of a silicon oxide matrix with submicron pore sizes. A detailed study of achieved gold nanostructures&amp;rsquo; morphology, microstructure, and surface composition at different formation stages is carried out to understand the peculiarities of realized nanostructures. Based on the obtained results, a mechanism for the growth of gold nanostructures in a limited volume, which can be used for the controlled formation of nanostructures with a predetermined geometry and composition, has been proposed. The results observed in the present study can be useful for the design of plasmonic-active surfaces for surface-enhanced Raman spectroscopy-based detection of ultra-low concentration of different chemical or biological analytes, where the size of the localized gold nanostructures is comparable with the spot area of the focused laser beam.&lt;/p&gt;</subfield>
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    <subfield code="u">Cryogenic Research Division, Scientific-Practical Materials Research Centre, NAS of Belarus, 220072 Minsk, Belarus</subfield>
    <subfield code="a">Victoria D. Bundyukova</subfield>
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    <subfield code="u">Department Materials and Chemistry, Vrije Universiteit Brussel, Boulevard de la Plaine 5, 1050 Brussels, Belgium &amp; ChemSIN—Chemstry of Surfaces, Interfaces and Nanomaterials, Université libre de Bruxcelles, Campus de la Plaine, Boulevard du Triomphe 2, CP 255. 1050 Brussels, Belgium</subfield>
    <subfield code="a">Jon Ustarroz</subfield>
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    <subfield code="u">Department Materials and Chemistry, Vrije Universiteit Brussel, Boulevard de la Plaine 5, 1050 Brussels, Belgium</subfield>
    <subfield code="a">Herman Terryn</subfield>
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    <subfield code="u">Laboratory of Solid State Physics, The Institute of Nuclear Physics, Ibragimov Str. 1, Nur-Sultan 050032, Kazakhstan &amp; Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Mirzoyan Str. 2, Nur-Sultan 010008, Kazakhstan</subfield>
    <subfield code="a">Artem L. Kozlovskiy</subfield>
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    <subfield code="u">Laboratory of Solid State Physics, The Institute of Nuclear Physics, Ibragimov Str. 1, Nur-Sultan 050032, Kazakhstan &amp; Laboratory of Engineering Profile, L.N. Gumilyov Eurasian National University, Mirzoyan Str. 2, Nur-Sultan 010008, Kazakhstan &amp; Department of Intelligent Information Technologies, Ural Federal University, Prospekt Lenina 51, 620002 Yekaterinburg, Russia</subfield>
    <subfield code="a">Maxim V. Zdorovets</subfield>
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    <subfield code="u">Department of Raman Spectroscopy (Centre "Nanobiophotonics"), Joint Institute for Nuclear Research, 6 St. Joliot-Curie, 141980 Dubna, Russia &amp; Faculty of Nanotechnologies and New Materials, Dubna State University, Ulitsa Universitetskaya, 19, 141982 Dubna, Russia</subfield>
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