Université de Neuchâtel

Synchronous and asynchronous detection of ultra-law light levels using CMOS-compatible semiconductor technologies

Lotto, Christian ; Seitz, Peter (Dir.) ; Charbon, Edoardo (Codir.) ; Enz, Christian (Codir.) ; Farine, Pierre-André (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2010.

This work presents significant improvements of noise performance in synchronous CMOS image sensors and in asynchronous energy-sensitive singlephoton X-ray imaging systems. A detailed analysis of synchronous CMOS low-noise image sensors using conventional architectures reveals room for potential noise performance improvements, namely noise in switched-capacitor column-parallel amplifiers as well...

Université de Neuchâtel

Matrice d'électrodes intelligentes : un outil pour améliorer les performances spatiotemporelles des systèmes hybrides (vivant-artificiel), en boucle fermée et en temps réel

Bontorin Alves, Guilherme ; Seitz, Peter (Dir.) ; Renaud, Sylvie (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2010.

This thesis presents a promising new bioelectronics system, the Hynet. The Hynet is a Hybrid (living-artificial) Network, developed to study the long-term behavior of electro-genic cells (such as Neurons or Beta-cells), both individually and in a network. It is based on real-time closed-loop communication between a cell culture (bioware) and an artificial processing unit (hardware and software)....

Université de Neuchâtel

Element-sensitive X-ray imaging and computed tomography using energy-selective photodetection

Nüesch, Joachim ; Seitz, Peter (Dir.) ; Dommann, A. (Codir.) ; Herzig, H. P. (Codir.) ; Stoeckli-Evans, H. (Codir.)

Thèse de doctorat : Université de Neuchâtel, 2010.

A new method in X-ray imaging is presented and a proof of concept shown. The proof of concept is done with the simultaneous identification of aluminum, silicon and titanium and the determination of its integrated density. Also some additional measurements are conducted with aqueous solutions. In this case the concentration of sodium chloride and calcium chloride is measured. The method works in...

Université de Neuchâtel

Integration of organic optoelectronic : devices for biosensing applications

Ramuz, Marc ; Seitz, Peter (Dir.)

Thèse de doctorat : , 2009 ; Th. 2126.

The integration of organic optoelectronic devices – such as polymer light emitting diodes (PLEDs) and polymer photodiodes (PPDs) – onto a biochip is investigated. The biochip consists of a glass substrate, a planar single-mode waveguide and an optical grating to outcouple the guided light. Solution-processing of organic electronic devices allow to deposit PLEDs and PPDs by additive processes...

Université de Neuchâtel

Real-time photon-noise limited optical coherence tomography based on pixel-level analog signal processing

Beer, Stephan ; Seitz, Peter (Dir.)

Thèse de doctorat : Université de Neuchâtel, 2006 ; 1871.

This thesis presents the development of a CMOS smart imager for real-time optical coherency tomography (OCT). OCT, a measuring technique based on low-coherence interferometry, allows the acquisition of three-dimensional pictures of discontinuities in the refractive index of the sample. Due to the achieved depth resolution in the micrometer range, it has gained a lot of impact not only for many...