Imperial college of London 
ICB – Laboratoire interdisciplinaire Carnot de Bourgogne, France 
Single molecule biophotonics, ICFO institute, Spain 
Molecular nanophotonics, ICFO institute, Spain 
Nanophotonics, Fresnel institute, France 
Electromagnetic theory, IBM Almaden research centre, USA 
Optical Antennas & Metasurfaces, Langevin Institute, France 
Near Field microscopy, Munster university, Germany 
4f rare earth elements expert, Ecole Polytechnique, France