期刊
COATINGS
卷 12, 期 12, 页码 -出版社
MDPI
DOI: 10.3390/coatings12121983
关键词
few-layer graphene; graphene/PDMS; buckling behavior; modulus
资金
- Fellowship of China national postdoctoral program for innovative talents [BX20200166]
- Natural Science Foundation of Jiangsu Province [BK20210271]
- Postdoctoral Science Foundation of Jiangsu Province [2020Z355]
- National Natural Science Foundation of China [12202189]
- China Postdoctoral Science Foundation [2021M701703]
- Jiangsu Funding Program for Excellent postdoctoral talent [2022ZB211]
The buckling behavior of graphene on soft films has been extensively studied. This experiment systematically investigates the buckling behavior of monolayer, three-layer, and four-layer graphene on soft films under large compression. The cross-sections of buckling patterns are provided using FIB technology. Furthermore, the modulus of few-layer graphene is calculated, and it is found that the modulus is independent of the number of graphene layers when the number is less than four.
The buckling behavior of graphene on soft films has been extensively studied. However, to avoid graphene fracture, most studies focus only on the primary buckling behavior induced by tiny compression. Here, the buckling behavior of monolayer, three-layer, and four-layer graphene on soft films is systematically studied in the experiment under large compression. The cross-sections of buckling patterns in these few-layer graphenes are provided, which depend on focused ion beam (FIB) technology. More significantly, the moduli of few-layer graphene are calculated based on the buckling behavior. We demonstrate that the modulus, 1.12621 TPa, is independent of the number of graphene layers if the number is less than four. Our investigations are crucial for the application of two-dimensional (2D) materials into flexible hybrid electronics, bionics, and various other stiff/soft bilayer systems.
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