Global ETD Search
Search theses and dissertations gathered from participating repositories worldwide. Every result links back to the library that holds it. No account is needed.
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Showing 1 to 10 of 10 for “"substrate curvature"”.
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Substrate curvature measurement system
… circuits (VLSI). During this process a substrate is coated with a thin film to protect the micro circuitry formed on the substrate. Due to the differences in thermal expansions between film and substrate, mechanical stresses can develop which may lead to deformation of the substrate …
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Study of Phospholipid/Graphene interfaces and the effect of substrate curvature on lipid morphology and dynamics.
… been known to form stable interfaces with solid substrates like graphene, and these interfaces have potential applications in bio-sensing and targeted drug-delivery. In this paper, we perform molecular dynamics simulations of graphene supported lipid monolayers to characterize lipid properties in …
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Micromechanics of deformation and stress evolution in thin films and patterned lines on substrates
… to thin metal films and patterned metal lines on substrates. The first part of this investigation dealt with the elastoplastic behavior of interconnect lines during thermal cycling. A robust computational method was developed to predict volume-averaged stresses in unpassivated and passivated lines …
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Microstructure, residual stress, and mechanical properties of thin film materials for a microfabricated solid oxide fuel cell
… deposition pressure (5mtorr - 1OOmtorr), and substrate temperature (room temperature, 3000C and 6000C). Microstructure is characterized by x-ray diffraction (XRD), transmission electron microscopy (TEM), and scanning electron microscopy (SEM). Film composition, specifically impurity content, …
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High-Precision Stress Measurement in Thin Films for X-Ray Mirrors
… as compared to other techniques, such as substrate curvature methods. A novel device that uses the membrane resonance technique to repeatably measure stress in thin films is described. Sources of non-repeatability are discussed and repeatability studies are performed. The results presented …
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Stress in ion-beam assisted silicon dioxide and tantalum pentoxide thin films
… nature and amount of gas in the chamber, substrate cleaning and ion-assistance parameters) on films properties (stress, composition, refractive index njoonm and extinction coefficient ksoonm) was investigated.A scanning method, based on substrate curvature measurements by laser reflection …
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Programmable adhesion in dry and wet environments through geometric design
… surface conditions for effective attachment. The curvature of the stalk enhances attachment by increasing conformal contact on large-scale curvatures and improving contact stress around the stalk's perimeter, which allows it to better adapt to small-scale roughness. This enables switching ratios …
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Homeostatic mechanics framework for modelling interactions of cells with the microenvironment
… extend the framework to investigate the role of substrate curvature in the orientational ordering of myofibroblasts. We propose that the microtubules are the primary cytoskeletal component involved in curvature sensing. Using detailed morphometric analysis, we confirm our hypothesis, and …
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Ion-induced stress relaxation during the growth of cubic boron nitride thin films
… by ion implantation, a complex bipolar pulsed substrate bias source was constructed. This power supply enables the growth of cBN thin films under low energy ion irradiation (up to 200 eV) and, for the first time, the simultaneous implantation of ions with an energy of up to 8 keV during high …
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Cu(Ag)-Legierungsschichten als Werkstoff für Leiterbahnen höchstintegrierter Schaltkreise
… sondern auch die Beschichtung auf strukturierte Substrate von Interesse. Die erzeugten Schichtproben werden in ihren Gefügeeigenschaften, vergleichend zu reinen Kupferschichten, charakterisiert. Hierzu zählen Korngrößen und -orientierungen, thermisches Gefügeverhalten, Einbau, Verteilung und …