DUBOIS Sylvain

CNRS-Université de Poitiers-ISAE ENSMA
11 Boulevard Marie et Pierre Curie
Téléport 2, BP 30179
86962 Futuroscope Cédex
France

Equipe de recherche

Propriétés Physiques des Nanostructures

Biographie

1988/1989: Bachelor of Physical Sciences obtained at Bordeaux University

1989/1991: Master of Physical Chemistry obtained at Bordeaux University

1991/1994: PhD thesis in Physical Chemistry (Bordeaux University). PhD directors: Dr François Carmona (Professor) et Dr Serge Flandrois (Research director at C.N.R.S.). Title: Disordered composites containing a high temperature superconducting phase: synthesis and physical properties.

1994/1998: Post-doctoral position at the Catholic University of Louvain (Belgium).

1998/2003: Assistant professor at the Poitiers University.

2002: Ability to conduct research defended the 18^th of september 2002 in front of the jury: J. P. Bonnet (Pr., ENSCI , Limoges), H. Dreyssé (Pr., IPCMS, Strasbourg), A. Fert (Pr., UMR Thalès/CNRS, Nobel prize of Physics with P. Grünberg, en 2007), J. Grilhé (Pr., LMP, Poitiers), M. Grosbras (CR, LMP, Poitiers), J. Mimault (Pr., LMP, Poitiers), J. C. Niepce (Pr., LRRS, Dijon), L. Piraux (Pr., Unité PCPM, Louvain, Belgique).

2003/…: Professor at the Poitiers University

Recherche

Main research activities:

Synthesis and properties of nanomaterials (nanowires, bulk nanostructured materials, nanolamellar materials)
Relationship between micro or nano-structure and physical properties (transport properties, mechanical properties, physical chemistry properties)
Studied materials: Magnetic nanowires, superconducting nanowires, multilayered nanowires – Relation between the reduced dimension of the object under study and the scaling length of the physical property – such a project led me to work during 4 years with Pr. A. Fert (Nobel Prize in physics in 2007).
Studied materials: MAX Phases – Nanolaminated materials and related properties (mechanical and transport properties)

Responsabilities:

Scientific coordinator of ANR projects.
Scientific coordinator of industrial contracts.
Scientific responsible of scientific cooperation between belarus and France.
Chief of the Chemistry department of the Poitiers Institute of Technology (from 2009 to April 2012)
Executive Vice-president of the Poitiers University, in charge of research, April 2012-June 2016
Head of the department of Physics and Mechanics of Materials (start in September 2017)

Scientific Animation :

Member of the scientific committee of the French congress « Poudres et matériaux frittés », 2005 and 2013
Member of the scientific committee of the « 9^th International Symposium on Self-propagating High-temperature Synthesis », Dijon, juillet 2007.
Organizer of 3 symposiums on MAX phases (Pittsburgh, Daytona Beach and Houston, (USA))

Referee for different journals: Journal of Applied Physics, Journal of the American Ceramic Society, Journal of Alloys and Compounds, Physical Review B

Scientific Production :

100 publications in international reviews (hindex = 30 ; 2701 citations)

2 chapters in book

130 communications in congress among which 70 oral communication as speaker

12 communications, upon invitation, in international congress

5 invitations as speaker in different laboratory among the world

Other informations:

– 1998: Young Researcher prize awarded by the French Chemical Society

– 2015: Knight in the National Order of Academic Palms

Enseignement

Head of the chemistry department of the University Institute of technology (University of Poitiers) : 2010 – 2012

Teaching in general physics : mechanics, optic, electronics, electricity, physics of materials

Activités administratives

Current responsability: Director of the Department of physics and mechanics of materials (since september 2017

Other responsabilities during my career:

Head of the teaching chemical department Institute of Technology, Poitiers, 2010-2012
Deputy Vice President in charge of Research (from 2012 to 2016)

Sélection de publications

1 – A. Joseph, V. Gauthier-Brunet, J.P. Monchoux, A. Joulain, F. Brisset, C. Tromas, J. Douin, F. Pettinari, J. Bonneville, S. Dubois, Formation processes of the w-Al₇₀Cu₂₀Fe₁₀ phase synthesized by SPS technique, J. of Alloys and Compounds, 699 (2017) 1157-1165.

2 – M. Nechiche, T. Cabioc’h, E. N. Caspi, O. Rivin, A. Hoser, V. Gauthier-Brunet, P. Chartier, and S. Dubois, Evidence for symetry reduction in Ti₃(Al_1-_eCu_e)C₂ MAX phase solid solutions, Inorg. Chem., 56 (23) (2017) 14388-14395.

3 – E. Drouelle, V. Gauthier-Brunet, J. Cormier, P. Villechaise, P. Sallot, F. Naimi, F. Bernard, S. Dubois, Oxidation resistance of Ti₃AlC₂ and Ti₃Al_0.8Sn_0.2C₂ MAX phases: A comparison, J. of the Am. Ceram. Soc., 103, (2020) 1270-1280.

4 – W. Yu, M. Vallet, B. Levraut, V. Gauthier-Brunet, S. Dubois, Oxidation mechanisms in bulk Ti₂AlC: influence of the grain size, J. of the Eur. Ceram. Soc., 40 (2020) 1820-1828.

5 – W. Yu, W. Jia, F. Guo, Z. Ma, P. Zhang, C. Tromas, V. Gauthier-Brunet, P R.C. Kent, W Sun, S. Dubois, The correlation between N deficiency and the mechanical properties of the Ti₂AlN_y MAX phase, J. of the Eur. Ceram. Soc. 40 (2020) 2279-2286.