This research project is part of the Research and Innovation Strategies for Smart Specialisation (RIS 3) of the Lower Normandy region and more particularly in the field of sustainable and intelligent materials, which represents one of the 5 areas selected by the Basse-Normandie region in consultation with local economic actors. The FAST-MIR and THERMOS projects underpin this demand are more precisely in the sub-area of specialisation "Advanced Materials Engineering and Design, which is one of the 13 sub-areas identified following consultations between local economic actors, representatives of research, companies and institutions. The FAST-MIR project aims to develop innovative laser materials for ultra-short pulse laser sources operating in the medium infrared, a field of wavelengths that are still unexplored, but with high application potential. The laser materials in question emit around 2 m, spectral domain, in which water absorption bands and atmospheric transmission windows are located and which may therefore have applications in soft material processing, laser metrology, free space communications or surgery and laser therapy. The realisation of laser sources emitting directly in the region around 2 m can be done from materials doped by thulium (Tm) and holmium (Ho) ions which are particularly attractive due to their high efficiency and wide gain bands around 2 m. These ions already studied in different crystal matrixes and in fibers have led to commercial lasers operating in continuous or Q-switch with powers up to kW and very good quality beams at the limit of diffraction. The interest in these ions now concerns their operation under ultra-short pulses. The potential of such femtosecond sources, around 2 m, is indeed very large. In addition to the fact that this is an area of eye safety, the high absorption of water in this field of wavelength makes these sources very attractive for a number of medical applications, especially in surgery. In addition, selective absorption by certain molecules (H2O,CO2,N2O,..) opens up prospects for the study of the atmosphere using LIDAR-type techniques. In addition, ultrafast lasers emitting at 2 m are very coveted for pumping OPOs emitting in the medium IR, in the range 3 m — 12 m, for the generation of supercontinum in the IR, the realisation of THz sources and molecular spectroscopy. Finally, there are many other possibilities for these new laser sources, such as the generation of XUV radiation or the making of frequency combs in the MIR for metrology. The THERMOS project concerns the synthesis and physico-chemical characterisation of new hybrid thermoelectric materials for use in a temperature range ranging from the ambient to 200 °C. The synthesised materials will aim to replace the bismuth telluride (Bi2Te3), which is the only material usable in this temperature range, but it has the disadvantage of having rare, expensive and toxic elements. Due to their chemical nature, hybrid materials are particularly well suited for low temperature applications.The strategy used to develop this project will consist of intercaling organic, insulating or conductive molecules into MS2 type inorganic sheets (M=W, Mo, Ti) in order to combine high electrical conductivity and low thermal conductivity.