1. Brazilian Synchrotron Light Laboratory (LNLS) Brazilian Center for Research in Energy and Materials (CNPEM) Campinas 13083‐970 Sao Paulo Brazil
2. Advanced Light Source Lawrence Berkeley National Laboratory Berkeley CA 94720 USA
3. MackGraphe – Graphene and Nanomaterials Research Center Mackenzie Presbyterian University 01302‐907 São Paulo Brazil
4. Physikalisch‐Technische Bundesanstalt (PTB) Abbestr. 2‐12 10587 Berlin Germany