Missions

We aim to control light diffusion via the formation of anisotropic silicon objects, such as ellipsoids and nanowires. Using Mie resonances along two separate axes of the silicon nano-object, we can increase the directionality of light scattering properties.

Activités

The research engineer will be working on the disproportionation reaction of silicon rich oxide into a silicon nanowire. In situ environmental microscopy will be used to observe in real time the formation of silicon nanowires. The optical properties of these nanowires will be studied using EELS STEM.

Compétences

For this study, a person with experience in synthetic chemistry is required. Skills in sol-gel chemistry and oxide disproportionation into semiconductors are needed. The candidate should have previous experience in optics, especially an understanding of Mie resonance. The candidate should have experience in several of the following characterization techniques: electron microscopy (TEM and SEM), X-ray diffraction, UV-vis and Raman spectroscopy. A high level of scientific English, ambition and curiosity are required.

Contexte de travail

The research engineer will participate in the ERC-funded Scatter project under the supervision of Dr. Glenna Drisko (https://glennadrisko.com/). He or she will be integrated into the Functional Materials and Photonics axis of the Chemistry Laboratory (LCH - CNRS UMR 5182), in Lyon, France (https://www.ens-lyon.fr/). However, frequent buisiness trips to Bordeaux may be required.

Contraintes et risques

The main risks associated with this project is handling organic solvents that demonstrate a certain degree of toxicity and flamability. Electrical equipment will be used. The characterization room is rather loud due to multiple pieces of equipment and vacuum pumps being used in parallel.