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Université de Neuchâtel

Fast Geometric Matching for Shape Registration

Jost, Timothée ; Hügli, Heinz (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2002 ; 1679.

The research presented in this Ph.D. contributes to the development of the three-dimensional (3D) vision field. More precisely, it addresses the problem of the registration, or geometric matching, of 3D datasets, which consists in finding their correct relative alignment based on their intrinsic properties. Typical applications using registration as part of their working principle include the...

Université de Neuchâtel

Visual Attention : from Bio-Inspired Modeling to Real-Time Implementation

Ouerhani, Nabil ; Hügli, Heinz (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2003 ; 1735.

Visual Attention: From Bio-Inspired Modeling to Visual attention is the ability of a vision system, be it biological or artificial, to rapidly select the most salient and thus the most relevant data about the environment in which the system is operating. The main goal of this visual mechanism is to drastically reduce the amount of visual information that must be processed by high level and thus...

Université de Neuchâtel

Thin film microcrystalline silicon layers and solar cells : microstructure and electrical performances

Droz, Corinne ; Shah, Arvind (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2003 ; 1757.

Hydrogenated microcrystalline silicon (mc?Si:H), as grown by the Very High Frequency Plasma Enhanced Chemical Vapour Deposition (VHF PE-CVD) technique, has now been successfully introduced as active layer in complete mc?Si:H solar cells of p?i?n and n?i?p structure. A fundamental question yet to be answered regards the link between the material microstructure, on one hand, and the transport...

Université de Neuchâtel

Microfluidic devices for heterogeneous assays

Dodge, Arash ; De Rooij, Nicolas F (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2003 ; 1701.

Microfluidics is a rec

Université de Neuchâtel

Microélectrodes pour mesures SECM et ECSTM combinées

Auger, Vincent ; Koudelka, Milena (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2003 ; 1728.

Dans le contexte actuel de la recherche, beaucoup d'efforts sont réalisés dans l'établissement de nouveaux outils d'investigation dans les domaines des systèmes biologiques. Ceci passe également dans la combinaison de techniques existante afin d'étudier sur un plan multimodal les échantillons. Ce travail de thèse s'inscrit dans cette problématique. Ont été développés une plate-forme...

Université de Neuchâtel

Diffractive and refractive lenses for hard x-rays with ultra-high efficiencies

Nöhammer, Bernd ; Herzig, Hans-Peter (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1748.

Focusing of x-rays is an essential pre-requisite for many synchrotron based measurement techniques. In this work, multi-level silicon zone plates and planar refractive lenses made from diamond and silicon have been developed, aiming for focusing applications in the hard x-ray range, i.e. for photon energies between 10 and 50 keV. The first part of the work deals with diffractive x-ray lenses...

Université de Neuchâtel

Resonant grating filters for microsystems

Niederer, Guido ; Herzig, Hans-Peter (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1745.

In the present work we report on the design and characterization of a tunable optical filter for use in a compact add-drop multiplexer. The optical filter is a resonant grating filter (RGF) consisting of a planar waveguide and a grating parallel to the surface. A resonance occurs when the incoming light is diffracted by the grating and matches a mode in the waveguide. Numerous aspects of the...

Université de Neuchâtel

Development of microfluidic devices for chemical analysis and fluid handling

Egidi, Giovanni ; De Rooij, Nicolas F (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1743.

Miniaturization of chemical analysis and synthesis systems improve throughput, performance and accessibility, and lead to significantly reduced costs. In this work are described several components that find place in the process of miniaturization. This work is developed in the frame of the project CREAM (Cartridges with molecularly imprinted Recognition Elements for Antibiotic residues Monitoring...

Université de Neuchâtel

Polarization Optics of Periodic Media

Bohley, Christian ; Dändliker, René (Dir.)

Thèse de doctorat : Université de Neuchâtel : 2004 ; 1749.

The thesis describes different approaches for the simulation of light propagation in anisotropic media. It will focus, especially, on polarization effects in anisotropic media with periodic structure. The work gives shortly a theoretical background with some essential considerations for polarization optics. This includes Maxwell's equations, the explanation of matrix concepts for optical elements...