Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film
发布时间：2025-04-30
点击次数：
- 发布时间：
- 2025-04-30
- 论文名称：
- Raman spectra of bilayer graphene covered with Poly(methyl methacrylate) thin film
- 发表刊物：
- AIP Adv.
- 摘要：
- The Raman spectra of bilayer graphene covered with poly(methyl methacrylate) (PMMA) were investigated. Both the G and 2D peaks of PMMA-coated graphene were stiff and broad compared with those of uncovered graphene. This could be attributed to the residual strain induced by high-temperature baking during fabrication of the nanodevice. Furthermore, the two 2D peaks stiffened and broadened with increasing laser power, which is just the reverse to uncovered graphene. The stiffness is likely caused by graphene compression induced by the circular bubble of the thin PMMA film generated by laser irradiation. Our findings may contribute to the application of PMMA in the strain engineering of graphene nanodevices.
- 合写作者：
- M. G. Xia*, Z. D. Su, S. L. Zhang,
- 卷号：
- 2
- 页面范围：
- 032122
- 是否译文：
- 否
- 发表时间：
- 2012-09-05