Controlled cracking in multilayered graphene films coated on flexible substrates and their electromechanical properties

Abstract

Cracking in the brittle thin films causes tremendous trouble, but controlling cracking with care brings new opportunities to flexible electronics, particularly the highly accurate strain sensing. However, the complexity of the influencing factors on crack formation poses challenges to research, accurate control, and the full utilization of the novel cracked-thin film strain sensor. Multilayered reduced graphene oxide (MLG) films, due to their tuneable structural parameters via wet fabrication and high electric conductivity, could potentially serve as a promising material platform to study the cracking behaviours and the corresponding electromechanical properties. In particular, their unique..