1. School of Engineering and Materials Science; and Materials Research Institute; Queen Mary University of London; Mile End Road London E1 4NS UK
2. State Key Laboratory for Modification of Chemical Fibers and Polymer Materials; College of Material Science and Engineering; Donghua University; Shanghai 201620 PR China
3. Laboratory of Bio-Inspired and Graphene Nanomechanics; Department of Civil; Environmental and Mechanical Engineering; University of Trento; Via Mesiano 77 38123 Trento Italy
4. Centre for Materials and Microsystems; Fondazione Bruno Kessler; Via Sommarive 18 I-38123 Trento Italy
5. Faculty of Chemistry and Chemical Engineering; Eindhoven University of Technology; P.O. Box 513 5600 MB Eindhoven The Netherlands
6. Nanoforce Technology Ltd.; Joseph Priestly Building; Queen Mary University of London; Mile End Road London E1 4NS UK