CE08 - Matériaux métalliques et inorganiques et procédés associés

Multifrequency low temeprature plasma at atmospheric pressure and metallic salt for a onde step nanocomposite thin film process, safe by design: application to plasmonic and magnetic nanocomposite – PLASSEL

Submission summary

PLASSEL aims to develop a low cost, one step, process able to prepare polymer/metal nanocomposite (NCs) thin films, with well-controlled properties on large surface substrates. This safe by design process at low environmental impact will be developed for gold plasmonic and nickel magnetic NCs. Its originality comes from the association of an aerosol of metallic salt dissolved in a solvent with a multifrequency Dielectric Barrier Discharge (DBD) producing a low temperature plasma at atmospheric pressure easily upgraded on large-scale surface. The plasma induces metallic nanoparticles (NPs) formation, their transport onto the substrate and the polymerization of the solvent to make the NCs matrix and/or NPs shell. The scientific approach combines numerical modeling and experiments. This project aims to understand the transformation of metallic salt into NPs, designs an optimal plasma source and optimizes NCs properties. The equilibrium properties of the plasma will be used to get original NP’s shapes and/or structures.
By continuously referring to the literature on plasmonic NCs, PLASSEL will develop, for the Au/polymer system, plausible models of nucleation and growth of NPs and will identify the key phenomena and associated experimental parameters, which will allow the morphological control of NCs. It will also develop specific tools for the in situ characterization of NPs to follow their formation along the whole production chain. This know-how will then be transposed to the case of magnetic NCs, with a special emphasis on the use of the off-equilibrium conditions of DBDs to promote the formation of allotropic varieties other than the thermodynamically stable one of Ni. These new metallic phases will allow PLASSEL to explore new magnetic properties, scarcely studied to date.
The fine control of the properties of CNs involves (i) determining the transformation processes of metal salts droplets into metal NPs in the presence of energetic plasma species (ii) controlling the size, shape, structure of NPs and their density in NCs. The understanding of all the process parameters and in particular the discharge regime on solvent polymerization and NPs growth in the plasma volume and on the substrate will allow controlling each of the mechanisms as independently as possible.
Finally, thanks to a pilot plasma reactor available in the consortium, the production of these NCs will be scaled up to determine how to make the process industrially recoverable in the long term.
The feasibility of this new NC manufacturing process has just been established by the coordinator's laboratory on the Au/polymer system. These pioneer experimental results are the origin of the present proposal.
The consortium brings together specialists of modeling and experimentation having large knowledge of the growth and transport of NPs in plasma (LSPM, LAPLACE, PROMES), discharges at atmospheric pressure and their associated processes (PROMES, LAPLACE) as well as specialists in the processing and characterization of NCs (PROMES, ITODYS) and their plasmonic (PROMES) and magnetic properties (ITODYS).
The versatility of PLASSEL process in terms of variety of materials prepared, structural and microstructural properties explored and its easy upscaling make it a unique process. It places our consortium as a clear leader in these fields. The significant expected advances in functional metallic nanomaterials should accentuate this scientific leadership in many domains as the synthesis of materials and their physical properties, the experimental in-situ analysis and the physic of plasma interaction with salt droplets or NPs. Results will pave the way for technology transfers.

Project coordination

Françoise MASSINES (Laboratoire procédés, matériaux, énergie solaire)

The author of this summary is the project coordinator, who is responsible for the content of this summary. The ANR declines any responsibility as for its contents.

Partner

LAPLACE LABORATOIRE PLASMA ET CONVERSION D'ENERGIE
LSPM Laboratoire des Sciences des Procédés et des Matériaux
PROMES Laboratoire procédés, matériaux, énergie solaire
ITODYS Interfaces, Traitements, Organisation et Dynamique des Systèmes

Help of the ANR 483,757 euros
Beginning and duration of the scientific project: - 48 Months

Useful links

Explorez notre base de projets financés

 

 

ANR makes available its datasets on funded projects, click here to find more.

Sign up for the latest news:
Subscribe to our newsletter