1. School of Mechanical Engineering, University of Tehran, North Kargar Street, Tehran, Iran
2. Laboratory of Bio-Inspired and Graphene Nanomechanics, Department of Civil, Environmental and Mechanical Engineering, Università di Trento, via Mesiano, 77, I-38123 Trento, Italy
3. Center for Materials and Microsystems, Fondazione Bruno Kessler – via Sommarive 18, 38123 Povo (Trento), Italy
4. School of Engineering and Materials Science, Queen Mary University of London – Mile End Road, London E1 4NS, UK