Authors: J. García Molleja, B.J. Gómez, J. Ferrón, E. Gautron, J. Bürgi, B. Abdallah, M.-A. Djouadi, J. Feugeas, P.-Y. Jouan The European Physical Journal - Applied Physics (2013) 64: 20302 (November 15th, 2013) Only the first page is uploaded because EDP Sciences' copyrigth policy. Available at: http://dx.doi.org/10.1051/epjap/2013130445