Keywords:force-constant model,graphene,Raman G peak splitting 力常数模型,石墨烯,拉曼G峰劈裂 Full-TextCite this paperAdd to My Lib Abstract: 应用计及五阶近邻的力常数模型,研究了单轴应力下的石墨烯和芳香烃分子三明治型贴层的石墨烯中拉曼谱的G峰劈裂.计算结果表明对称性的降低解除了G峰对应的在Γ点...
The frequency shift of the Raman G peak of epitaxial graphene due to the interaction with a substrate described by effective bond force constant k is investigated using the model of two coupled oscillators. The relative G-peak shift is shown to be Δω( G )/ω( G ) ∝ k/k 0g , ...
Uniaxial strain in Graphene by Raman spectroscopy: G peak splitting, Gruneisen parameters and sample orientation. Phys. Rev. B 79, 205433 (2009). Article ADS Google Scholar Chhikara, M. et al. Effect of uniaxial strain on the optical Drude scattering in graphene. 2D Materials 4, 025081 (...
Graphene-enhanced Raman scattering (GERS) on isotopically labelled bilayer and a single layer of pristine and partially hydrogenated graphene has been studied. The hydrogenated graphene sample showed a change in relative intensities of Raman bands of Rhodamine 6 G (R6G) with different vibrational en...
G band and 2D band [34]. The much sharper and higher 2D band peak shows the characterization of monolayer graphene and that of 3-layer graphene is lower. The intensity ratios of D and G bands are very low, which indicate the high quality of the two graphene samples. In addition, this...
(g) Schematic diagram of MSCs device fabrication based on GNR film [128]. (h) Raman spectra of GNRs of different sizes [128]. (i) STM image of chevron-type GNRs [129]. (j) STM image of 9-AGNRs [74]. Liu et al. synthesised GNR thin films using CVD as electrode materials for ...
The slight peak shift of Mo 3d spectra in the interlayer during the charge/discharge processes could confirm the reversible chemical interactions between MoS2/graphene interlayer and LiPSs [71]. Furthermore, Cui et al. [72] utilized operando Raman spectroscopy to investigate the capability of ...
RamanspectraLinear G peak position temperature dependence in Raman spectra of graphene synthesized by chemical vapor deposition from decane on copper (220) with a shift factor of −(5.4 ± 0.4) × 10−2 cm−1K−1 was observed. The obtained value substantially exceeds values previously ...
The micro-Raman G peak relates to the bond stretching between pairs of sp2 atoms41,42. It shows that the bond length and ΓG peak follow the same trend up to 1.47∘. This agreement indicates that the angle dependence of the Raman peak can be explained by the bending mode corrugation....
f, Raman spectra of the GO and EGNITE. The ratio between D and G peaks increases after the hydrothermal treatment. g, XPS full spectrum. BE, binding energy. h, C1s peak of (top) GO and (bottom) EGNITE. The decrease of the oxygen signal indicates the reduction of the GO film. i,...