Luminescence Enhancement and SERS by Self-Assembled Plasmonic Silver Nanostructures in Nanoporous Glasses

Pshenova, Alisa; Сидоров, А. И.; Антропова, Т. В.; Nashchekin, Aleksey V.

doi:10.1007/s11468-018-0784-5

Cited by 12 publications

(6 citation statements)

References 26 publications

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“…Из рисунка видно, что рост металла в нанопористом стекле происходит в виде фрактальных микродендритов. Как было показано в [29], микродендриты, в свою очередь, состоят из металлических нанопроволок, поперечный размер которых не превышает диаметра пор, т. е. 25 nm.…”

Section: Nmunclassified

Оптические Поглотители Для Термоэлектрических Преобразователей Излучения Солнца На Основе Композитов С Наночастицами Металлов И Полупроводников

Сидоров¹,

Санина²,

Кудаев³

et al. 2020

Журнал Технической Физики

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Section: Nmunclassified

Оптические Поглотители Для Термоэлектрических Преобразователей Излучения Солнца На Основе Композитов С Наночастицами Металлов И Полупроводников

Сидоров¹,

Санина²,

Кудаев³

et al. 2020

Журнал Технической Физики

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“…The adhesion can be improved for example by thermal annealing [13] or binding the nanoparticles to the surface covalently [14]. Although the adhesive forces between the plasmonic particles and glass are generally weak, porous glass substrates with high specific surface area were proven to be effective in sensing capability enhancement [15]. If the adhesion takes place at a solid/liquid (S/L) interface, one must consider the effect of surface charges of both the particles and the substrate and the particle-particle interactions.…”

Section: Electronic Supplementary Materialsmentioning

confidence: 99%

Fast optical method for characterizing plasmonic nanoparticle adhesion on functionalized surfaces

et al. 2019

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In this paper, a rapid optical method for characterizing plasmonic (gold) nanoparticle (AuNP) adhesion is presented. Two different methods were used for AuNP preparation: the well-known Turkevich method resulted in particles with negative surface charge; for preparing AuNPs with positive surface charge, stainless steel was used as reducing agent. The solid surface for adhesion was provided by a column packed with pristine or surface-modified glass beads. The size of the nanoparticles was studied by transmission electron microscopy (TEM) and small-angle X-ray scattering (SAXS); the surface charge of the components was determined by streaming potential measurements. The characterization of adhesion was performed in a flow system by UV-Vis spectroscopy. During the adhesion experiments, the role of the surface charge, the particle size, and the pH were studied, as well as the adhered amount of gold nanoparticles and the surface coverage values. The latter was estimated by theoretical calculations and defined by the quotient of the measured and the maximal adhered amount of nanoparticles, which could be determined by the cross-sectional area of the NPs and the specific surface area of the glass beads. The results are verified by the polarization reflectometric interference spectroscopy (PRIfS) method: silica nanoparticles with diameters of a few hundred (d~450) nanometers were immobilized on the surface of glass substrate by the Langmuir-Blodgett method, the surface was modified similar to the 3D (continuous flow packed column) system, and gold nanoparticles from different pH solutions were adhered during the measurements. These kinds of modified surfaces allow the investigation of biomolecule adsorption in the same reflectometric setup.

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“…In turn, the latter characteristics depend on the synthesis method of the metallic nanoporous layer. The second important application area of microand nanoporous metal layers is bio-and chemical sensors based on Raman scattering [5][6][7][8][9][10][11][12]. When surface plasmons propagate in a porous or fractal metal film, " hot spots"can occur therein.…”

Section: Introductionmentioning

confidence: 99%

“…In such regions, amplitude of the electromagnetic wave field is amplified [13], which is accompanied by increase in Raman scattering intensity. This allows sensitivity of the sensors to be significantly increased [5][6][7][8][9][10][11].…”

Section: Introductionmentioning

confidence: 99%

Morphological features of micro- and nanoporous silver and copper films synthesized by the substitution reaction method

Нащекин

Никоноров

et al. 2022

Physics of the Solid State

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The results of a study of the structural features of thin silver and copper films synthesized by the chemical substitution reaction are presented. Silver films were obtained by immersing copper substrates in a solution of silver nitrate. Copper films were synthesized by immersing iron and tin-plated iron substrates in a copper sulfate solution. The study of the morphology and composition of the synthesized layers was carried out using a scanning electron microscope. It has been shown that metal nanoporous layers up to 1 μm thick are formed on the substrates as early as 2-3 s after the start of the reaction. The layers consist of microcrystalline hexagonal plates and micro- and nanodendrites. As the reaction time increases, the layers become denser. In this case, the minimum pore size is 20 nm. The synthesized nanoporous films can be used for photocatalytic decomposition of water and enhancement of Raman scattering. Keywords: morphology, porous film, silver, copper, substitution reaction.

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Luminescence Enhancement and SERS by Self-Assembled Plasmonic Silver Nanostructures in Nanoporous Glasses

Cited by 12 publications

References 26 publications

Оптические Поглотители Для Термоэлектрических Преобразователей Излучения Солнца На Основе Композитов С Наночастицами Металлов И Полупроводников

Оптические Поглотители Для Термоэлектрических Преобразователей Излучения Солнца На Основе Композитов С Наночастицами Металлов И Полупроводников

Fast optical method for characterizing plasmonic nanoparticle adhesion on functionalized surfaces

Morphological features of micro- and nanoporous silver and copper films synthesized by the substitution reaction method

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