1. Open Laboratory on Experimental Micro and Nano Mechanics (OLEM); Institute of Mechanics, Bulgarian Academy of Sciences; Acad. G. Bonchev Street, Block 4 1113 Sofia Bulgaria
2. Research and Development of Nanomaterials and Nanotechnologies (NanoTech Lab Ltd.); Acad. G. Bonchev Street, Block 4 1113 Sofia Bulgaria
3. Istituto per i Polimeri, Compositi e Biomateriali (IPCB), Consiglio Nazionale delle Ricerche (CNR); Via Campi Flegrei 34 Olivetti 80078 Pozzuoli (NA) Italy