Glukhova Olga E, Nefedov Igor S, Shalin Alexander S, Slepchenkov Мichael М
Department of Physics, Saratov State University, Astrakhanskaya street 83, 410012 Saratov, Russia.
Laboratory Nanooptomechanics, ITMO University, St. Petersburg, 197101, Russia.
Beilstein J Nanotechnol. 2018 Apr 30;9:1321-1327. doi: 10.3762/bjnano.9.125. eCollection 2018.
For the first time, we estimated perspectives for using a new 2D carbon nanotube (CNT)-graphene hybrid nanocomposite as a base element of a new generation o optical nanodevices. The 2D CNT-graphene hybrid nanocomposite was modelled by two graphene monolayers between which single-walled CNTs with different diameters were regularly arranged at different distances from each other. Spectra of the real and imaginary parts of the diagonal elements of the surface conductivity tensor for four topological models of the hybrid nanocomposite have been obtained. The absorption coefficient for p-polarized and s-polarized radiation was calculated for different topological models of the hybrid nanocomposite. It was found that the characteristic peaks with high intensity appear in the UV region at wavelengths from 150 to 350 nm (related to graphene) and in the optical range from 380 to 740 nm irrespective of the diameter of the tubes and the distance between them. For waves corresponding to the most intense peaks, the absorption coefficient as a function of the angle of incidence was calculated. It was shown that the optical properties of the hybrid nanocomposite were approximately equal for both metallic and semiconductor nanotubes.
我们首次评估了将新型二维碳纳米管（CNT）-石墨烯混合纳米复合材料用作新一代光学纳米器件基础元件的前景。二维CNT-石墨烯混合纳米复合材料由两个石墨烯单分子层构成，不同直径的单壁碳纳米管在其间以不同间距规则排列。已获得混合纳米复合材料四种拓扑模型的表面电导率张量对角元素实部和虚部的光谱。针对混合纳米复合材料的不同拓扑模型，计算了p偏振和s偏振辐射的吸收系数。结果发现，无论碳纳米管的直径及其间距如何，高强度特征峰均出现在150至350纳米波长的紫外区域（与石墨烯相关）以及380至740纳米的光学范围内。对于对应最强峰的波，计算了吸收系数随入射角的变化。结果表明，金属型和半导体型纳米管的混合纳米复合材料的光学性质大致相同。
