Mass detection using a double-layer circular graphene-based nanomechanical resonator

摘要

In this article, we examine the potential of using a double-layered clamped-circular graphene as a nanomechanical resonator. The frequency equation of the resonator with an attached mass at an arbitrary location is derived analytically using the nonlocal elasticity theory. Then, the vibration frequency and sensitivity of the resonator can be evaluated. The results indicate that the frequency is higher as the attached mass is farther away from the center of the resonator. However, the trend of the sensitivity is reverse. The maximum sensitivity is obtained when the mass is attached at the center. The frequency and sensitivity of the double-layer graphene-based resonator decrease with an increase of aspect ratio. In addition, the sensitivity increases with an increase of nanolocal parameter. The results are helpful to design double-layered graphene-based resonators.