The role of interface diffusion in solid state dewetting of thin films: The nano-marker experiment

Barda, Hagit; Rabkin, Eugen

doi:10.1016/j.actamat.2019.07.042

Cited by 16 publications

(6 citation statements)

References 34 publications

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“…Indeed, the parameter B in equation (1.1) scales with the metal-self-diffusion coefficient along the metal-coating interface, D i , whereas in the classical Mullins model for unpassivated surfaces this parameter scales with the surface self-diffusion coefficient of the metal, D s . Though several recent works indicate that self-diffusion of metal along the metal-oxide interface is much faster than bulk self-diffusion [3], [10], [13], [14], it is still much slower than self-diffusion of metal on unpassivated surface. At homologically low temperatures the difference between D i and D s can reach several orders of magnitude [4].…”

Section: Discussionmentioning

confidence: 99%

“…Subsequent heat treatments result in grain growth in the film, yet the surface topography does not change and does not correspond anymore to the actual microstructure of the film [22]. However, recent studies have demonstrated that metal self-diffusion along the metal-ceramic interfaces may be much faster than bulk self-diffusion, and comparable with other types of short-circuit diffusion in solids [14], [3]. Also, recent solid state dewetting experiments with thin Al films deposited on sapphire substrate indicated that Al self-diffusion along the interface between Al and its native oxide may be fast enough to enable significant morphology evolution of the film [10].…”

Section: Introductionmentioning

confidence: 99%

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Grain boundary grooving in a bicrystal with passivation coating

Kalantarova

Klinger

Rabkin

2021

Continuum Mech. Thermodyn.

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We use the sixth order linear parabolic equationproposed by Rabkin and describing the evolution of a solid surface covered with a thin, inert and fully elastic passivation layer, to analyze the grain boundary groove formation on initially flat surface. We derive the corresponding boundary conditions and construct an asymptotic representation of the solution to this initial boundary value problem when α is small, by applying the theory of singular perturbation. We illustrate the effect of passivation film near and far from a grain boundary groove.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Grain boundary grooving in a bicrystal with passivation coating

Kalantarova

Klinger

Rabkin

2021

Continuum Mech. Thermodyn.

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“…As a result, the interstices at the grain boundaries were deepened and expanded gradually to form large voids. Meanwhile, the thickness of the Ag layer grew during the dewetting process, due to the mass conservation [40]. Afterward, the Ag/void interfaces started to recede, and the voids to advance.…”

Section: Mechanism Of the Driving Layer Strategymentioning

confidence: 99%

Preparation and Photoelectric Properties of Patterned Ag Nanoparticles on FTO/Glass Substrate by Laser Etching and Driving Layer Strategy

Huang

Zhang

et al. 2020

Acta Metall. Sin. (Engl. Lett.)

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An effective method based on laser etching and driving layer strategy was proposed to prepare patterned Ag nanoparticles (Ag NPs) on fluorine-doped tin oxide (FTO)/glass substrate and thus to enhance the photoelectric properties. This method successively included depositing an aluminum-doped zinc oxide (AZO) driving layer, laser etching, depositing an Ag layer, furnace annealing and laser removal. Different AZO and Ag layer thicknesses were adopted, and the surface morphology, crystal structure and photoelectric properties were investigated. An Ag NPs/FTO/glass sample without an AZO driving layer was prepared for comparison. It was found that furnace annealing of the Ag layer combined with the AZO driving layer, rather than that without the AZO driving layer, was more conducive to generating patterned Ag NPs. Using a 20-nmthick AZO layer and a 150-nm-thick Ag layer led to the formation of uniformly distributed Ag NPs being aligned along the laser-etched grooves to form a pattern. The as-obtained sample had the best comprehensive photoelectric property with an average transmittance of 79.95%, a sheet resistance of 7.11 Ω/sq and the highest figure of merit of 1.50 × 10 −2 Ω −1 , confirming the feasibility of the proposed method and providing enlightenment for related researches of transparent conductive oxide-based films.

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“…Для управления свойствами поверхностного слоя деталей машин и механизмов используются различные подходы, предполагающие изменение элементного состава путем введения в поверхностный слой различных элементов: ионная имплантация [1, 2], ионный миксинг [3], диффузия из газообразного [4,5], жидкого [6,7] или твердого [8,9] состояний легирующих элементов. Широко применяется комплексное легирование, к примеру, легирование сталей атомами металлов для дальнейшего (или совместного) насыщения приповерхностного слоя неметаллическими атомами (азот, углерод, бор) [10].…”

Section: Introductionunclassified

Экспериментальные исследования и моделирование импульсного электронно- пучкового воздействия на систему «ZrN-покрытие/подложка из силумина»

Koval¹,

Koval²,

Крысина³

et al. 2022

8th International Congress on Energy Fluxes and Radiation Effects

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Настоящая работа посвящена исследованию комбинированной модификации силумина, включающей нанесение ZrN-покрытия на подложку и последующую обработку импульсным субмиллисекундным электронным пучком системы покрытие/подложка. Были проведены экспериментальные измерения и теоретические расчеты локальной температуры на образцах в зоне электронно-пучкового воздействия и толщины зоны расплава. Численно решена задача Стефана о высокоскоростном нагреве силумина без и с покрытием ZrN под воздействием интенсивного электронно-пучкового воздействия. Получены зависимости температурного поля, положения фронта кристаллизации и скорости его перемещения от времени. Получено, что при изменении толщины покрытия от 0.5 до 2 мкм скорость роста температуры поверхности на фронте увеличивается с 6·107 до 9·107 К/с, а максимальная температура, достигаемая на фронте, изменяется с 760 до 1070 ºС. Глубина расплава не превышает 57 мкм. Скорость фронта расплава в течение импульса воздействия составляет 3·105 мкм/с. Показано хорошее совпадение экспериментальных и теоретических значений температурных характеристик и толщин зон расплава при электронно-пучковой обработке.

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The role of interface diffusion in solid state dewetting of thin films: The nano-marker experiment

Cited by 16 publications

References 34 publications

Grain boundary grooving in a bicrystal with passivation coating

Grain boundary grooving in a bicrystal with passivation coating

Preparation and Photoelectric Properties of Patterned Ag Nanoparticles on FTO/Glass Substrate by Laser Etching and Driving Layer Strategy

Экспериментальные исследования и моделирование импульсного электронно- пучкового воздействия на систему «ZrN-покрытие/подложка из силумина»

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