Evolution of the optical properties and morphology of thin metal films during growth and annealing

Леонов, Н. Б.; Gladskikh, I. A.; Polishchuk, V. A.; Vartanyan, T. A.

doi:10.1134/s0030400x15090179

Cited by 28 publications

(18 citation statements)

References 7 publications

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“…Figure 1 shows that the increase of gravimetric thickness of Ag films led to the spectral red shift, intensity enhancement and broadening of the plasmonic bands. Our observations in a good agreement with previously published data (Leonov et al ., 2015). The broadening of spectra correlates with the formation of a complex fractal structure in the thickest film before annealing.…”

Section: Resultsmentioning

confidence: 99%

Stereometric and fractal analysis of granulated silver films used in thin‐film hybrid structures

Ţălu

Shcherbinin

Konshina

et al. 2020

Journal of Microscopy

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Silver nanostructures are of interest to be used in hybrid thin-film structures with various materials. In this work, we analyse 3D AFM images of granulated silver film nanostructures prepared by thermal evaporation. The advanced AFM data study aims to understand how film thickness and postannealing affect the nanostructure morphology changes. For the first time, the evaluation of surface statistical parameters and fractal geometry were used to characterise the nanostructure morphology of Ag island films. The samples with gravimetric thickness of 2, 4 and 10 nm were analysed before and after annealing at 200°C for 10 min. The statistical processing revealed the essential variation of parameters with Ag film thickness increment and as a postannealing result. The nonmonotonic variation of surface roughness, skewness and fractal dimensions were found. It is caused by the features of the film growth process with the thickness increment and thermally activated diffusion of Ag nanoparticles during annealing.

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Section: Resultsmentioning

confidence: 99%

Stereometric and fractal analysis of granulated silver films used in thin‐film hybrid structures

Ţălu

Shcherbinin

Konshina

et al. 2020

Journal of Microscopy

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“…Granular silver fi lms were produced by thermal evaporation in a PVD 75 vacuum chamber (Kurt J. Lesker) at a residual pressure of ∼1,310 -5 Pa and room temperature. Th e silver fi lms thickness was about 40 Е [31]. Th ese fi lms were deposited on glass substrates covered with ITO transparent electrode and a-C:H thin fi lm.…”

Section: Methodsmentioning

confidence: 99%

“…T-V curves were obtained applying sinusoidal voltage at a frequency of 1 kHz. Th e T-V curves were used to calculate the phase retardation and a pretilt angle of the LC cells as was described in [31]. Figure 3 shows the phase retardation curves for the studied LC cells.…”

Section: Methodsmentioning

confidence: 99%

Effect of Granular Silver Films Morphology on the Molecules Orientation and Ion Contamination of Nematic Liquid Crystal

Konshina

Shcherbinin

2017

Bulletin of the MSRU (Physics and Mathematics)

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The structure of granular silver films at the interface of liquid crystal (LC) cells and their influence on LC molecule orientation and ionic contamination are examined. Granular silver films were deposited on a glass substrate covered with an ITO electrode and a-C:H thin films. The morphology structure of the silver films was changed after their annealing at 200 °C. The silver granules became spheroidal with an average diameter of-30 nm and the channel area between them increased. The change in the structure of the Ag films led to an increase in the phase retardation and a decrease in the pretilt angle of the LC director from 51° to 7°. The density of ionic impurities in the LC cell with the annealed silver film was three times more than in the LC cell with the unannealed film. The impact of the alignment of the LC molecules at the surface of the granular silver films on the intensity of the plasmonic peak and its red shift in the absorption spectra is shown.

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“…Красное пятно в центре -это рассеянное на поверхностных неоднородностях поле распространяющихся по волокну мод. пленки при осаждении непосредственно на диэлектрические подложки растут по механизму Вольмера−Вебера с образованием большого количества наноразмерных гранул [10], что в данном случае неприемлемо. С тем чтобы получить сплошную золотую пленку и улучшить ее адгезию к волокну, на волокно предварительно был осаждён тонкий слой хрома.…”

Section: напыление металлической пленкиunclassified

Создание И Определение Чувствительности Волоконно-Оптического Рефрактометра На Основе Поверхностного Плазмонного Резонанса

Гущин¹,

Гагаринова²,

Плясцов³

et al. 2021

Оптика И Спектроскопия

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A fiber-optic refractive index sensor using the phenomenon of surface plasmon resonance has been developed. A 1 nm layer of chromium and a 50 nm gold film were applied to a section of a standard multimode optical fiber with a partially protected shell. The transmission spectra were measured as a function of the refractive index of the external medium into which the sensor was immersed. When the refractive index of the external medium changed, the minimum in the transmission spectrum caused by the excitation of the surface plasmon-polariton at the boundary between the gold film and the analyte shifted. The sensor sensitivity was 1400 nm/RU.

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Evolution of the optical properties and morphology of thin metal films during growth and annealing

Cited by 28 publications

References 7 publications

Stereometric and fractal analysis of granulated silver films used in thin‐film hybrid structures

Stereometric and fractal analysis of granulated silver films used in thin‐film hybrid structures

Effect of Granular Silver Films Morphology on the Molecules Orientation and Ion Contamination of Nematic Liquid Crystal

Создание И Определение Чувствительности Волоконно-Оптического Рефрактометра На Основе Поверхностного Плазмонного Резонанса

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