L'Unité de Recherche Interdisciplinaire de Spectroscopie Electronique (LISE) unites the efforts of physicists, chemists and engineers to carry out research on material surfaces and interfaces.
Created in 1972, the Laboratoire Interdisciplinaire de Spectroscopie Electronique (LISE) unites the efforts of physicists, chemists and engineers to carry out research into material surfaces and interfaces. It has built up an international reputation in an ever-expanding field of research, as new materials are most often made up of complex assemblies of films or particles of different natures. This research is of direct relevance to the industrial world, but the laboratory's mission is also, and above all, to provide a fundamental understanding of the new properties of these materials. Exciting new prospects are opening up in this 21st century thanks to the advent of nanomaterials, whose assemblies will undoubtedly constitute the materials of the future.
The LISE research unit develops its research within the NISM research institute. Cutting-edge research is divided into two main themes:
- The study and fabrication of material surfaces and interfaces
The surface of materials generates many of their properties, as the surface is the locus through which a material interacts with its environment. Similarly, the assembly of materials of different natures (polymer-metal, glass-polymer, metal-oxide...) generates new properties. In partnership with the SIAM and MORPH-IM technology platforms, the LISE laboratory has access to analysis techniques that enable the composition and physico-chemical structure of matter to be measured at thicknesses in the nanometer range: these include electron (XPS) and ion (ToF-SIMS) spectroscopies, as well as scanning tunneling microscopy (STM) and photoelectron microscopy (PEEM). Other techniques complete this arsenal: optical spectroscopies, contact angle measurement techniques...
New materials are also produced in the laboratory by plasma treatment techniques (etching, deposition, functionalization) and thin-film deposition techniques by vacuum evaporation or molecular jet epitaxy. A few recent research topics illustrate the variety of problems studied: layer deposition for metal protection, plasma deposition of metal catalysts, new materials for electronics (graphene, MoTe2, etc.), metal/polymer assemblies, materials for renewable energies (fuel cells, photovoltaics).
- The development and fundamental understanding of modern analytical techniques
LISE's analytical techniques are based on the interaction of photons, electrons or ions with matter, which enables us to probe its extreme surface. These techniques enable fundamental studies of these interactions, which are still poorly understood. Current research focuses in particular on photoemission in nanostructures, the study of ionization probabilities in ToF-SIMS and the in-depth analysis (profiling) of organic/inorganic hybrid materials. Ultimately, this research will not only optimize analysis techniques, but also provide a better understanding of the fundamental interaction between particles or radiation and matter.
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