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The structure of thin terminated Bi(1 1 1) films of approximately 1 nm thickness is investigated from first principles. Our density functional theory calculations show that covalent bonds to the surface can change the orientation of the…

Materials Science · Physics 2019-07-16 Christian König , Stephen Fahy , James C. Greer

When thin films are grown on a substrate by chemical vapor deposition, the evolution of the first deposited layers may be described, on mesoscopic scales, by dynamical models of the reaction-diffusion type. For monoatomic layers, such…

Mesoscale and Nanoscale Physics · Physics 2015-06-16 Daniel Walgraef

The ability of amorphous intergranular films to mitigate damage formation at grain boundaries is studied with molecular dynamics simulations. We find that such films can alter both crack nucleation and crack growth rates by efficiently…

Materials Science · Physics 2015-01-22 Zhiliang Pan , Timothy J. Rupert

Solid materials are commonly classified as crystalline or amorphous based on the presence or absence of long-range order.Metal-organic frameworks (MOFs), like other solids,also display markedly different properties and functions in these…

During the growth of metal thin films on dielectric substrates at a given deposition temperature T, the film's morphology is conditioned by the magnitude and asymmetry of up- and downhill diffusion. Any severe change of this mechanism leads…

Mesoscale and Nanoscale Physics · Physics 2013-04-17 Henning Galinski , Thomas Ryll , Philipp Reibisch , Lukas Schlagenhauf , Iwan Schenker , Ludwig J. Gauckler

Numerical Simulations are employed to create amorphous nano-films of a chosen thickness on a crystalline substrate which induces strain on the film. The films are grown by a vapor deposition technique which was recently developed to create…

Due to their high kinetic inductance, highly disordered superconducting thin films are a potential hardware for the realization of compact, low-noise elements in cryoelectronic applications. However, high disorder typically results in…

Superconductivity · Physics 2026-02-12 J. Lorenz , S. Linzen , M. Ziegler , G. Oelsner , R. Stolz , F. S. Tautz , F. Lüpke , E. Il'ichev

The atomic structure and physical properties of few-layered <111> oriented diamond nanocrystals (diamanes), covered by hydrogen atoms from both sides are studied using electronic band structure calculations. It was shown that energy…

Systematic exploration of amorphous ABC heterostructures revealed that nanoscale morphological modifications markedly improved their artificial bulk second-order susceptibility. These amorphous birefringent heterostructures were fabricated…

Further development of nuclear power plant technology relies heavily on materials durability under operating conditions. Estimating the materials performance in the operando tests is crucial. In this paper, the mechanical behavior of thin…

This Letter reports an anomaly of film porosity dependence on deposition rate during physical vapor deposition - the porosity increases as deposition rate decreases. Using glancing angle deposition of Cu on SiO2 substrate, the authors show…

Materials Science · Physics 2015-06-03 Stephen P. Stagon , Hanchen Huang , J. Kevin Baldwin , Amit Misra

In this work, we investigate the correlation between morphology, composition, and the mechanical properties of metallic amorphous tungsten-oxygen and amorphous tungsten-oxide films deposited by Pulsed Laser Deposition. This correlation is…

Materials Science · Physics 2019-01-08 Edoardo Besozzi , David Dellasega , Valeria Russo , Matteo Passoni , Marco Beghi

Atomic layer deposition (ALD) enables the conformal coating of porous materials, making the technique suitable for pore size tuning at the atomic level, e.g., for applications in catalysis, gas separation and sensing. It is, however, not…

Simulations of the structure and dynamics of fluid films confined to a thickness of a few molecular diameters are described. Confining walls introduce layering and in-plane order in the adjacent fluid. The latter is essential to transfer of…

mtrl-th · Physics 2008-02-03 Peter A. Thompson , Mark O. Robbins , Gary S. Grest

We study dewetting of thin polymer films with built-in topographical fluctuations produced by rubbing the film surface with a rayon cloth. By varying the density of imposed surface defects, we unambiguously distinguish spinodal dewetting,…

Soft Condensed Matter · Physics 2007-05-23 B. Du , Z. Yang , O. K. C. Tsui

This study provides a new insight into the processes which occur when thin film hydrogenated amorphous silicon is subjected to UV laser irradiation in the presence of oxygen. It achieves this by observing the effects of subjecting the films…

Materials Science · Physics 2016-06-02 Saydulla K. Persheyev , James A. Cairns

It is shown how the combination of atomic deposition and nonlinear diffusion may lead, below a critical temperature, to the growth of nonuniform layers on a substrate. The dynamics of such a system is of the Cahn-Hilliard type, supplemented…

Pattern Formation and Solitons · Physics 2013-07-22 Daniel Walgraef

A thin polymeric film in contact with a fluid body may leach low-molecular-weight compounds into the fluid. If this fluid is a small droplet, the compound concentration within the liquid increases due to ongoing leaching in combination with…

Soft Condensed Matter · Physics 2019-10-09 Thijs W. G. van der Heijden , Anton A. Darhuber , Paul van der Schoot

Size-property relations in plasma-modified ZnO thin films have been investigated as a function of plasma treatment duration. The correlations between crystallite sizes and the morphological characteristics of films have been extracted on…

Materials Science · Physics 2013-02-21 A. Kh. Argynova , A. A. Loctionov , K. A. Mit , D. M. Mukhamedshina

Amorphous interfacial complexions have been shown to restrict grain growth and improve damage tolerance in nanocrystalline alloys, with increased chemical complexity stabilizing the complexions themselves. Here, we investigate local…

Materials Science · Physics 2026-03-05 Esther C. Hessong , Zhengyu Zhang , Tianjiao Lei , Mingjie Xu , Toshihiro Aoki , Timothy J. Rupert