The influence of temperature on the large amplitude vibration of circular single-layered MoS2 resonator

YQ Zhang and F Xu and XY Zhang, EUROPEAN PHYSICAL JOURNAL PLUS, 137, 428 (2022).

DOI: 10.1140/epjp/s13360-022-02660-4

Two-dimensional MoS2 has wide application in the nanoelectromechanical device. In this paper, the large amplitude vibration of circular single- layered MoS2 (CSLMoS2) is investigated under the temperature excitation. The nonlinear circular plate model (NCPM) considering the temperature stress is proposed to study the large amplitude vibration of heated CSLMoS2. The nonlinear dynamic equation of CSLMoS2 with stochastic excitation is established. The stationary probability density of heated CSLMoS2 is obtained from NCPM, which shows the both case of pre-buckling and post-buckling. The damping ratio of CSLMoS2 is obtained from molecular dynamics (MD) simulations. The MD simulation results show that the damping ratio of CSLMoS2 increases with an increase in the temperature. The displacement and phase trajectories of heated CSLMoS2 is presented through NCPM considering the temperature stress using fourth-order Runge-Kutta algorithm.

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