AVS 60th International Symposium and Exhibition
    Graphene and Other 2D Materials Focus Topic Tuesday Sessions
       Session GR+AS+EM+MI+MN-TuM

Invited Paper GR+AS+EM+MI+MN-TuM5
Graphene Mechanics and NEMS Applications

Tuesday, October 29, 2013, 9:20 am, Room 104 B

Session: Optical, Magnetic, Mechanical and Thermal Properties of 2D Materials
Presenter: J.C. Hone, Columbia University
Correspondent: Click to Email
This talk will review collaborative efforts in characterizing the mechanical properties of graphene, and its application to nano-electromechanical devices (NEMS). We use nano-indentation of freely suspended membranes to measure mechanical properties. These measurements, when combined with nonlinear anisotropic continuum modeling, reveal that graphene is both ultrastiff (in-plane Young’s modulus equivalent to 1 TPa) and the strongest known material (in-plane breaking strength equivalent to 100 GPa). Our recent work demonstrates that CVD-grown graphene, even in the presence of grain boundaries, can retain almost all of this intrinsic strength, opening the door to large-area high-strength films. For NEMS applications, we have developed techniques that allow fast, highly sensitive electronic readout. We are applying graphene NEMS to studies of fundamental physics in the quantum Hall regime and applications in electro-mechanical signal processing. In particular, I will dsicuss our recent work on graphene voltage controlled oscillators for generation of frequency modulated signals.