Plasmon resonances in monolayers of golden nanoparticles on substrates with differing morphology : научное издание

Tsarenko A V; Lukyanenko A V; Umarova A Sh; Yakovlev I A; Aleksandrovsky A S; Nemtsev I V; Andryushchenko T A; Fedorov A S; Tarasov A S

Дополнительные ссылки: eLibrary

База данных: Каталог библиотеки СФУ

Библиографическое описание: Plasmon resonances in monolayers of golden nanoparticles on substrates with differing morphology : научное издание / A. V. Tsarenko, A. V. Lukyanenko, A. S. Umarova [и др.]. - Текст : непосредственный // Physica Scripta. - 2026. - Т. 101, № 14. - С. 145913. - ISSN 0031-8949. - ISSN 1402-4896, DOI 10.1088/1402-4896/ae4f2e.

Аннотация: Abstract Gold nanoparticles (AuNPs) exhibit unique optical properties due to localized surface plasmon resonance (LSPR), making them valuable for applications in nanophotonics, sensing, and biomedicine. This study investigates the formation of ordered AuNP monolayers on Au/Si(100) substrates with controlled roughness prepared by magnetron sputtering and thermal evaporation. We examine how substrate morphology influences nanoparticle organization and analyze collective optical properties using reflection spectroscopy. Ordered AuNP ensembles were formed at the air/water interface and transferred onto Au/Si(100) substrates. Our results demonstrate that substrate roughness significantly affects monolayer packing density and uniformity. Reflection spectra revealed two characteristic resonances: an LSPR peak at ∼525 nm and a low-energy resonance at ∼800 nm associated with collective particle–substrate interactions. Significantly, encapsulation with cetyltrimethylammonium chloride (CTAC) molecules suppressed the long-wavelength resonance. Comparative analysis with colloidal AuNP dimers suggests charge-mediated interactions in plasmon resonance formation. These findings demonstrate effective control of collective plasmonic modes through substrate morphology tuning and nanoparticle surface functionalization, offering promising avenues for developing advanced optical materials and sensor platforms.

Год издания: 2026

Авторы: Tsarenko A V, Lukyanenko A V, Umarova A Sh, Yakovlev I A, Aleksandrovsky A S, Nemtsev I V, Andryushchenko T A, Fedorov A S, Tarasov A S

Издательство: Royal Swedish Academy of Sciences

Источник: Physica Scripta

Выпуск: Т. 101, № 14

Номера страниц: 145913

Количество экземпляров:

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