Radial Breathing Mode Frequency of Multi-Walled Carbon Nanotubes:an Analytical Approximation Based on Contunuum Mechanics
Measurements of Raman radial breathing modes (RBM) have been most useful in characterizing the diameters of carbon nanotubes (CNTs).In this paper,the vibrational frequencies and the Raman RBM of multi-walled carbon nanotubes (MWCNTs) are simulated based on a continuum mechanics.Moreover,the RBM of MWNTs over a broad range of inner and outer diameters is investigated.It is shown that the vibrational frequency of RBM is complicated to MWCNTs due to the van der Waals (vdW) interaction between layers.The highest RBM frequency of MWCNTs depends mostly on the diameter of the innermost layer,being insensitive to the layer numbers.Carbon nanotube structures correspond to the vibrational frequencies and modes of CNTs.The analytical approximation offers a useful method for determining precisely the diameter of the MWCNTs.
Carbon nanotubes Raman spectroscopy Radial breathing modes Simulation
Taiyou Yishica Toshiaki Natsuki Qingqing Ni
Faculty of Textile Science and Technology,Shinshu University,3-15-1 Tokida,Ueda-shi,386-8567,Japan
国际会议
The tenth China-Japan joint conference on Composite Materials (第10届中日复合材料学术会议(CJJCC-10))
成都
英文
298-301
2012-09-08（万方平台首次上网日期，不代表论文的发表时间）