We perform molecular dynamics simulations to investigate the energy dissipation of the resonant oscillation for the group IV monolayers of puckered configuration, in which the oscillation is driven with different actuation velocities. We find that, in the moderate actuation velocity regime, the nonlinear coupling between the resonant oscillation mode and other high-frequency modes will lead to the non-resonant motion of the system. For the larger actuation velocity, the effective strain generated during the resonant oscillating causes a structural transition from the puckered configuration into the planar configuration, which is a characteristic energy dissipation mechanism for the resonant oscillation of these group IV puckered monolayers. Our findings shed light on mechanical applications of the group IV monolayers in the nanomechanical resonator field.

We derive analytical expressions for the Young's modulus and the Poisson's ratio of the graphene nanoribbon, in which free edges are warped by the compressive edge stress. Our analytical formulas explicitly illustrate the reduction of the Young's modulus by the warped free edges, leading to the obvious width dependence for the Young's modulus of the graphene nanoribbon. The Poisson's ratio is also reduced by the warped free edges, and negative Poisson's ratio can be achieved in the graphene nanoribbon with an ultra-narrow width. These results are comparable with previous theoretical works.

Abstract. Under the context of economic transition, exploring a new format of "Internet plus Manufacturing" which was based on the emerging information technology platform and the powerful manufacturing industry basis in Zhejiang Province, has an enormous effect in promoting the transforming and upgrading of manufacturing industry. From the perspective of knowledge network governance, this paper reveals the theory of boundary-spanning knowledge integration of "Internet Plus manufacturing" enterprises, which is of great theoretical significance to reconstruction of the existing theory. The conclusion will provide the theoretical basis of the knowledge network management and boundary-spanning knowledge integration for the Internet Plus manufacturing firms and enlighten policy decision about "Internet Plus manufacturing".