Cerebellar defects encompass a group of rare diseases affecting cerebellar functioning. The prevalence of these defects is estimated to be 26 in 10000 children in Europe. These diseases lead to movement disorders (ataxia) and are frequently associated with intellectual ...

This thesis focuses on the study of the femtosecond photoswitching dynamic in the bistable molecular materials, using the pump-probe experiments which are based on the optical and x-ray spectroscopies. Part of these experiments was performed at synchrotron and X-FEL (X-...

Physical interactions involve highly dexterous movements and exchanges of diverse information. Numerous haptic interfaces were developed with the aim to reproduce these dexterous gestures and each of these interactions. However, it is technically impossible to date to d...

Despite the astonishing diversity of plants, animals and macroscopic fungi, most eukaryotic diversity is actually microbial. The eukaryotic tree comprises several large monophyletic supergroups. One of these groups is the Opisthokonta, which encompasses two branches, Ho...

Comparative ecology, through large-scale screening of plant morpho-physiological traits, has brought evidence that plant diversity is constrained. Several co-variations between functional traits appear to be pervasive across species and ecosystems. This has been interpr...

In the context of agroecological transition, the reintroduction of legumes in cropping systems represents a major lever. Indeed, legumes allow the reduction of nitrogen inputs during their growth cycle thanks to their ability to symbiotically fix atmospheric nitrogen. I...

Since its first observation, a decade ago, high harmonic generation (HHG) in crystals has proved to be an efficient, controllable and compact source of coherent XUV radiation. In this thesis, we investigate HHG in 2D materials, particularly graphene, and in different se...

The understanding of secondary organic aerosols (SOA) is still incomplete, especially from the ozonolysis of unsaturated volatile organic compounds (VOC). The measurement of low volatility compounds involved in SOA formation is a challenge that the scientific community ...

The aim of this dissertation is todevelop new lensless single shot imagingtechnique in 2D and 3D with XUV harmonicsources which can be applied to study biologicalobjects and phase objects. Firstly, we introducethe theory underlying lensless imagingtechniques and we desc...

This manuscript presents the first steps of a new ultracold atoms experiment using strontium 84. The aim of this experiment is to study the relaxation dynamics of quantum gases initially prepared in an out-of-equilibrium state. This experiment will include a quantum gas...