Description of the thesis topic

The main objectives of this thesis project are to elucidate the coupling mechanisms at the interfaces between gold nanoparticles (Au NPs) and metal oxide layers using nanometer-resolution optical and electrical characterizations—including PiFM, CAFM, KPFM, and photocurrent mapping—and then to evaluate the role of ALD-deposited layers in selectively strengthening or attenuating plasmonic transfer channels. Metal oxides have demonstrated immense application potential in fields such as chemical sensing, photovoltaics, photodegradation, photocatalytic materials, water photolysis, and photodetectors. It is now recognized that coupling these materials with plasmonic nanoparticles enhances their interaction with light through three mechanisms: light scattering, plasmon-induced resonant energy transfer, and energetic charge carrier injection. However, these effects strongly depend on the coupling between the metal nanoparticles and the layers, a phenomenon that is still far from being completely elucidated.

Work Context

The candidate will join the Strasbourg Institute of Physics and Materials (IPCMS) in Strasbourg, located on the Cronenbourg campus. The team is currently composed of 3 permanent staff and 4 doctoral students. The thesis project includes collaboration with a second team, particularly for sample preparation by ALD. This thesis will be attached to the Doctoral School of Physics and Physical Chemistry (ED 182).

The position is located in a sector under the protection of scientific and technical potential (PPST), and therefore requires, in accordance with the regulations, that your arrival is authorized by the competent authority of the MESR.

Constraints and risks

Using intense laser light