- Associated member of  L. D. Landau Institute for Theoretical Physics,

- Consultant de la société Hewlet-Packard (Palo Alto, Californie) au sujet d’applications du graphene. Initiation de collaboration LPMC – HP-invent.  Participation en élaboration du projet HP-DARPA BAA 07-50 « Carbon Electronics for RF applications »  2007, 2010...

- Bourse FAPESP (Brésil, SP), Chercheur Visiteur  Haute Niveau, 2003

Invited and Plenary talks (2006-2010))

2006, Avr. 17th Int. Symp. on Integrated Ferroelectrics (ISIF), Honolulu, Hawai,
    Invited talk: “Thermodynamic and electrical properties of ferroelectric domains in films”
2007, May. 18th Int. Symp. on Integrated Ferroelectrics (ISIF), Bordeaux, France.
    Invited talk: “Ferroelectric nano-domains”
2007, Jul. Int. Workshop “Physics of low-D systems”, Brazilia, Brésil
    Invited talk: “Dirac Fermions in Graphite and Graphene”
2007, Sep. Int. School "Nano-Photonics", Maratea, Italy,
    Series of Invited lectures "Physics of Graphene"
2008, Aug.  Intl. Conference on the Physics of Semiconductors (ICPS-29), Rio de Janeiro
    Invited talk: “Dirac Fermions in Graphite”
2008, Aug.  Intl. Workshop on Electronic Crystals, ECRYS-2008 Cargese (France),
    Invited talk: “Dirac Fermions in Graphite”
2009, Jan.  Intl. School of Nanophotonics, Santiago de Cuba,
    Invited lecture:  “Dirac Fermions”
2009, May. Intl. Workshop: Nanoscience and Engineering in Superconductivity Anacapri (Italy),
    Invited talk: Superconductivity with kappa close to sqrt(2)
2009, Aug.  3rd International Workshop on Smart Materials & Structures, Kiel, (Germany)
    Invited talk:  “Dirac fermions in graphite and graphene - Towards carbon-based nanoelectronics”
2009, Sept. “Humboldt Kolleg” In memorium of 150 years of Alexander von Humboldt, Kishinev (Moldova)
    Invited talk:  “Collaboration East Europe - Mediteranian area in material physics”, 
    Key-lecture:   “Dirac Fermions in graphite and graphene – towards carbon-based nanoelectronics”
2009, Sept. 6th International Seminar on Ferroelastics physics Voronezh, Russia
    Plenary lecture: “Ferroelastic domains in free-standing ferroelectric films”
2009, Sept.  The 2nd Intl Meeting on Clusters and Nanostructured Materials (CNM-2), Uzhorod, (Ukraine), 
    Invited talk:  “Dirac Fermions”
2010, Apr. Intl. conference Physics of Light-Matter Coupling in Nanostructures, PLMCN-11 Cuernavaca (Mexico),
    Invited talk:  “Optical properties of graphene”
2010 March 10ème Conf. Intl. de Phys. de la Matière Condensée et Physique Statistique Béni-Mellal (Morocco),
    Invited talk:  “Dirac fermions in graphite and graphene - Towards carbon-based nanoelectronics”
2010, Jun. Int. Symp. on Integrated Ferroelectrics (ISIF-2010), San Juan, Puerto Rico,
    Invited talk: “Modelling of 3D Ferroelectric Nano-devices”