Abstract The buckling behavior of single-layer MoS2 sheets under both uniaxial and biaxial compression is studied in the present paper. The critical strain, critical stress, equivalent elastic modulus as well as post-buckling morphologies are comprehensively studied. It is found that both the critical stress and equivalent elastic modulus of SLMoS2 sheets with kirigami-inspired structures are reduced significantly compared with perfect ones. The geometric parameters of kirigami-inspired structures in armchair and zigzag directions have different effects on the compressive behavior of SLMoS2 sheets. SLMoS2 sheets that sustain more strain could be realized by introducing kirigami-inspired structures. What is more, a desired post-bulking morphology can be obtained by properly tuning kirigami-inspired structures. The results should be helpful for various practical and potential applications of the new 2D material.

中文翻译：

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具有剪纸启发结构的单层二硫化钼片在压缩下的屈曲行为

摘要 本文研究了单轴和双轴压缩下单层二硫化钼片的屈曲行为。综合研究了临界应变、临界应力、等效弹性模量以及屈曲后的形态。结果表明，与完美结构相比，具有仿剪纸结构的 SLMoS2 片材的临界应力和等效弹性模量均显着降低。扶手椅和之字形方向的剪纸启发结构的几何参数对 SLMoS2 片材的压缩行为有不同的影响。通过引入剪纸启发的结构，可以实现承受更多应变的 SLMoS2 片。更重要的是，可以通过适当调整剪纸启发的结构来获得所需的膨胀后形态。