Dewetting of thin films
WebJan 6, 1992 · Abstract. Thin polystyrene films (<100 nm) on silicon substrates undergo dewetting when annealed above the glass transition temperature. Three different stages … Web12-nm-thick Au films on silicon nitride coated Si substrates were annealed at elevated temperatures in a high vacuum or forming gas, and the changes in film mo 掌桥科研 一站式科研服务平台
Dewetting of thin films
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WebMay 28, 2008 · Stability and dewetting of thin liquid films. The stability of thin liquid coatings is of fundamental interest in every- day life. Homogeneous and non-volatile … WebSep 30, 2024 · Dewetting of nickel thin films is a promising way to synthesize Ni nanoparticle assembles or magnetic antidots, and it is a technique widely employed for applications [4]. For example, magnetic antidots have been intensively investigated in recent years because they have been proposed for use in new electronic devices, such as …
WebSolid films are usually metastable or unstable in the as-deposited state, and they will dewet or agglomerate to form islands when heated to sufficiently high temperatures. This … WebAug 10, 1998 · Dewetting of polystyrene films on a silicon substrate is investigated as a function of film thickness h. We observe the nucleation of holes in the early stage of …
WebNickel oxide thin films with different thicknesses were synthesized by atomic layer deposition.After a thermal reduction process, under a controlled atmosphere of … Web47 minutes ago · (a): TEM image of AuNPs synthesized by thermal dewetting from a 4 nm gold film on a glass substrate at 400 °C for 1 h, (b): synthesis of AuNPs by thermal wetting at the end of a 780 HP optical fiber of 125 µm diameter, (c): zoom on the optical fiber, (d): integration of a fluidic circuit on an AuNPs substrate by 3D printing (right) and its ...
WebIn this work we formulated a one-dimensional kinetic model of solid state dewetting of the thin film with anisotropic surface, and verified its prediction for the quasi-single crystalline Au(Fe) film on sapphire: Fig. 2. (a) The atomic force microscopy (AFM) image of the near-hole ridge formed after annealing of 13 nm-thick Au(Fe) film on ...
WebThe stability of thin liquid films on a surface depends on the excess free energy of the system involving various short‐range and long‐range interactions. When forced to wet an unfavorable surface, thin liquid films dewet into multiple small‐sized droplets via spinodal, homogeneous, or heterogeneous nucleation process. However, if the total excess free … alegria orangeFor most applications, dewetting is an unwanted process, because it destroys the applied liquid film. Dewetting can be inhibited or prevented by photocrosslinking the thin film prior to annealing, or by incorporating nanoparticle additives into the film. Surfactants can have a significant effect on the spreading … See more In fluid mechanics, dewetting is one of the processes that can occur at a solid–liquid, solid–solid or liquid–liquid interface. Generally, dewetting describes the process of retraction of a fluid from a non-wettable surface it … See more In most dewetting studies a thin polymer film is spin-cast onto a substrate. Even in the case of $${\displaystyle S<0}$$ the film does not dewet … See more Solid-state dewetting of the metal thin films describe the transformation of a thin film into an energetically favoured set of droplets or particles at temperatures well below the melting point. The driving force for dewetting is the minimization of the total energy of the … See more alegria petal flatWebFeb 21, 2006 · The Dewetting of thin polymer films (60–300 nm) on a non-wettable liquid substrate has been studied in the vicinity of their glass transition temperature. In our experiment, we observe a global contraction of the film while its thickness remains uniform. We show that, in this case, the strain corresponds to simple extension, and we verify ... alegria piscine