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This thesis presents a methodology for the design optimization of hydraulic runner blades. The originality of the methodology comes from the geometric definition of the blade shapes, which uses parametric surfaces instead of a set of profiles. The main adv ...
Interaction of liquid crystals with nanostructured surfaces is studied experimentally. Whereas photolithographic or ATM methods mere used in the past for surface structuring, we use besides photolithography essentially replication methods for the creation ...
Despite progress during the last decade, the behavior of charged macromolecules, polyelectrolytes, including their interactions is not yet completely understood. In particular, interactions with oppositely charged surfaces, which play a significant role in ...
In this paper, we describe a miniature climbing robot, 96 x 46 x 64 [mm3], able to climb ferromagnetic surfaces and to make inner plane to plane transition using only two degrees of freedom. Our robot, named TRIPILLAR, combines magnetic caterpillars and ma ...
The aim of our research is to develop a powerful tool for the generation and the fabrication of free-form architecture. Within the last years, architectural design has shown great interest in the design of new and complex geometries, commonly known as free ...
The aim of this paper is to apply a surface parameterization to a blade. This geometric representation should be used as a practical tool in the process of design optimization. Most parameterizations are based on blade section approaches. The parameters ar ...
International Association For Hydraulic Research2004
Poly(tetrafluoroethylene) (PTFE) films were surface-modified by employing a reaction solution of benzophenone and sodium hydride in anhydrous dimethylformamide at a temperature of 150 degrees C for 12 h. Electron spectroscopy for chemical analysis (ESCA) s ...
We study the regularity of the regular and of the singular set of the obstacle problem in any dimension. Our approach is related to the epiperimetric inequality of Weiss (Invent Math 138:23–50, Wei99a), which works at regular points and provides an alterna ...
The reaction mechanisms of ZrCl4 adsorption and dissociation on Ge/Si(100)-(2 x 1) surface as the initial stage of ZrO2 atomic layer deposition process are investigated with density functional theory (DFT). The Si-Si, Si-Ge and Ge-Ge one-dimer cluster mode ...
In this paper we present a novel geometric framework called geodesic active fields for general image registration. In image registration, one looks for the underlying deformation field that best maps one image onto another. This is a classic ill-posed inve ...
