Mechanics of Graphene Bubbles
Pressurized graphene bubbles have been observed in experiments, which can be used to determine the mechanical and adhesive properties of graphene. A nonlinear plate theory is adapted to describe the deformation of a graphene monolayer subject to lateral loads, where the bending moduli of monolayer graphene are independent of the in-plane Youngs modulus and Poissons ratio. A numerical method is developed to solve the nonlinear equations for circular graphene bubbles, and the results are compared to approximate solutions by analytical methods based on membrane and linear plate theories. The adhesion energy of mechanically exfoliated graphene on silicon oxide is extracted from two reported data sets. The strain distribution of the graphene bubbles and transport of gas molecules among the bubbles are discussed. Moreover, the effect of van der Waals interactions between graphene and its underlying substrate is analyzed, including large-scale interaction for nanoscale graphene bubbles subject to relatively low pressures.
Graphene Adhesion van der Waals interactions
Peng Wang Wei Gao Kaimin Yue Zhiyi Cao Kenneth M.Liechti Rui Huang
Department of Aerospace Engineering and Engineering Mechanics,University of Texas,Austin,TX 78712,USA
国际会议
北京
英文
1-10
2013-06-16（万方平台首次上网日期，不代表论文的发表时间）