Performance Analysis of NEMS Switch Using Graphene Derivative Based Composite Beam

The present work deals with performance analysis of graphene and graphene derivative-based Nanoelectromechanical (NEMS) switch. The effect of manipulating the beam length and reduction in elastic modulus on pull-in voltage has reported in the present study. It has been found that reduction in elastic modulus reduces the pull-in voltage with less degree of reduction in restoring force than increasing the beam length. Moreover, the finite element analysis (FEA) of single material beam (graphene), and composite beams (graphene/rGO, graphene/GO) has performed. The composite beam concept is a good choice to reduce both elastic modulus and pull-in voltage. The simulation study demonstrates that the pull-in voltage reduces by 20% and 31% and restoring force reduces by 36% and 53% for graphene/rGO and graphene/GO composite beam respectively as compared to graphene beam. The analysis of switching time and release time for all the beam structures have also done. The composite beam based NEMS switch exhibits good performance in terms of pull-in voltage, restoring force, and switching time.