Dewetting of thin films
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 ... WebDewetting during processing of films for use in micro- and nanosystems is often undesirable, and means of avoiding dewetting are important in this context. However, …
Dewetting of thin films
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WebWe have investigated the effect of solid-state dewetting in Au thin films, as a function of local temperature, film thickness, and substrate adhesion. In this work, a localized temperature rise is induced in thin (≤50 nm) polycrystalline Au films on SiO 2 substrates via focused continuous-wave laser irradiation at 488 nm. The magnitude and ... 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 …
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 … WebMar 17, 2024 · The diameters of Au NPs produced from dewetting of Au thin films with thicknesses in the range of 1.7–5.5 nm vary from 7 ± 1 nm to 33 ± 8 nm. Compared to the thermal dewetting of Au films of similar thickness on patterned dimpled Ta substrates , the NPs produced on Si substrates reported in this work are smaller in size with more …
Web徐 林, 张欢欢, 石彤非 (1. 贵州师范学院表面物理与化学实验室, 贵阳 550018; 2. 中国科学院长春应用化学研究所, 高分子物理与化学国家重点实验室, 长春 130022;
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 ...
WebFeb 3, 2024 · Dewetting dynamics of thin PDMS films with applied electric field. a) Schematic of the experimental setup. b) The second derivative of the excess free energy … lacking corporalWebMay 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 … propagandist in the philippinesWebDec 31, 2014 · Chemical vapor deposition (CVD) on Cu thin films is a promising approach for the large area formation of graphene on dielectric substrates, but a fine control of the deposition parameters is required to avoid dewetting of the Cu catalyst. In this paper we report on the study of the Cu dewetting phenomena by monitoring the intensity of the … propagandists of the philippinesWebAbout this book. This book is a treatise on the thermodynamic and dynamic properties of thin liquid films at solid surfaces and, in particular, their rupture instabilities. For the … lacking conviction meaningWebDec 21, 2024 · Here, we have investigated the effect of solid-state dewetting in Au thin films, as a function of local temperature, film thickness, and substrate adhesion. In this work, a localised temperature rise is induced in thin (≤ 50 nm) polycrystalline Au films on SiO 2 substrates via focused continuous-wave laser irradiation at 488 nm. The magnitude ... lacking confidence in workWebMar 27, 2006 · Schematics of the dewetting of a thin film of thickness H and length 2 L. Only half of the film is drawn due to symmetry consideration. The contact angle between the film and the substrate is described by α. The initial edge (a) retracts (see x 0) and the profile forms a peak followed by a valley (b). The film evolves until peeling off in two ... lacking consistency 6WebNov 19, 2024 · The problem studied is represented in Fig. 1.A glassy polymer (such as PS) thin film of nominal thickness h 0 typically below 100 nm is lying on a substrate and heated well above its glass transition temperature T g.For a PS film, T g is about 100 °C and the temperature of the study, similar to the processing temperature, would be close to 200 … propagandic television examples