At the surface of a liquid, the molecules have more energy than those in the bulk. This gives birth to surface tension. In our everyday life, many manifestations of this phenomenon can be observed. The spherical shape of drops and the ability of some insects to walk on water are some examples. In this thesis, we use surface tension and the forces t...
peer reviewed / In the present work, titanium dioxide (TiO2) is sandwiched as a buffer layer between n-type aluminum-doped zinc oxide (AZO) and p-type cuprous oxide (Cu2O), increasing the efficiency of metal oxide-based solar cells. The effects of the device parameters such as thicknesses, carrier concentrations, and defect densities were investiga...
peer reviewed / The impact of drops on a thin liquid film is a phenomenon encountered in industrial applications, but also of particular interest in nature. Examples include the growth of stalagmites in karstic caves, a case where the drop feeds the film with ions that will subsequently precipitate. The mixing upon impact, which is witnessed both i...
Des recherches en Holographie ont été menées au HOLOLAB pendant plus de 25 ans. Elles ont débouché sur des applications dans des domaines aussi divers que l'archéométrie, la médecine et la sidérurgie. Après plusieurs années consacrées à l'étude des matériaux photosensibles, deux "grands champs" ont été développés: la métrologie optique (interféromé...
À l’ère du streaming roi, le sociologue Quentin Gilliotte enquête sur nos usages protéiformes en matière de consommation musicale.
Cet article est la suite d'un premier publié récemment. Les bases des différents processus évoqués dans le premier sont développées ici.
editorial reviewed / WO$_3$ is a binary 5d compound which has attracted remarkable attention due to the vast array of structural transitions that it undergoes in its bulk form. In the bulk, a wide range of electronic properties has been demonstrated, including metal-insulator transitions and superconductivity upon doping. In this context, the synth...
Many collective systems exist in nature far from equilibrium, ranging from cellular sheets up to flocks of birds. These systems reflect a form of active matter, whereby individual material components have internal energy. Under specific parameter regimes, these active systems undergo phase transitions whereby small fluctuations of single components...
peer reviewed / Crossed magneto-thermo-electric coefficients are central to novel sensors and spin(calori)tronic devices. Within the framework of Boltzmann’s transport theory, we calculate the resistivity and Seebeck coefficients of the most common 3d ferromagnetic metals: Fe, Co, and Ni. We use a fully first-principles variational approach, explic...
