ED Droit
The contribution of the advisory role of the Council of State to the consolidation of the rule of law in Colombia
by William ZAMBRANO-CETINA (CENTRE D'ÉTUDES ET DE RECHERCHES COMPARATIVES SUR LES CONSTITUTIONS, LES LIBERTÉS ET L'ÉTAT)
The defense will take place at 14h00 - Salon d'honneur Pôle juridique et judiciaire, Université de Bordeaux, 35 Place Pey-Berland, 33000 Bordeaux
in front of the jury composed of
- Fabrice HOURQUEBIE - Professeur - Université de Bordeaux - Directeur de these
- Marta FRANCH I SEGUER - Professeure - Université Autonome de Barcelone - Rapporteur
- Olivier LECUCQ - Professeur - Université de Pau et des Pays de l'Adour - Rapporteur
- Jean DU BOIS DE GAUDUSSON - Professeur émérite - Université de Bordeaux - Examinateur
- Didier RIBES - Conseiller d'État - Conseil d'État - Examinateur
The consultative function assigned to the Council of State as early as 1817 had a decisive impact on the emergence of the essential elements of the rule of law in Colombia, in the same way that it continues to play a significant role in the consolidation and renovation of these elements, in clear dialogue with the judicial function assigned to the Council of State since 1914, as well as with the other state institutions which find in this consultative function a source of legal authority and institutional trust.
ED Sciences Physiques et de l'Ingénieur
Study of nanomaterials in levitodynamics.
by Manon BARRIERE (Laboratoire Ondes et Matière d'Aquitaine)
The defense will take place at 9h00 - Amphi A2 351 Cours de la Libération, Bâtiment A9, 33400, TALENCE
in front of the jury composed of
- Yann LOUYER - Maître de conférences - Université de Bordeaux - Directeur de these
- Gabriel HéTET - Maître de conférences - ENS, PSL, Sorbonne Université, Université de Paris - Rapporteur
- Cyriaque GENET - Directeur de recherche - Université de Strasbourg - Rapporteur
- Olivier EMILE - Professeur - Université de Rennes - Examinateur
- Glenna DRISKO - Directrice de recherche - ENS Lyon - Examinateur
Levitodynamics involves the manipulation and study of the dynamics and physical properties of levitated mesoscopic resonators. It is a highly promising field of great interest for understanding the laws of physics across a wide range of areas, from material science to quantum science. This technique is very well isolated from its environment with very high quality factors, and enables cooling to the quantum ground state of center-of-mass motion, while working at ambient temperature and on an optical table. Optical trapping of silica is widely studied and used in levitodynamics. However, it would be desirable to enrich the field with new materials. Silicon appears to be a good candidate, as it has a refractive index more than twice that of silica at 1550 nm. This could lead to deeper optical traps and more efficient cooling. The goal of my thesis is to develop tools to optically trap nanoparticles in high vacuum, particularly through cooling techniques, and to apply these tools to polycrystalline silicon nanoparticles. Once optical trapping of silicon is achieved, the next step is to investigate its geometrical, thermal, and optical properties for instance. This could lead to new possibilities with new materials, such as preparation of macroscopic non-classical states, useful in ultra-low forces detection and precision gravimetry, for instance.