@article{oai:soar-ir.repo.nii.ac.jp:00013405,
 author = {Lei,  Xiao-Wen and Natsuki,  Toshiaki and Shi,  Jin-Xing and Ni,  Qing-Qing},
 issue = {24},
 journal = {PHYSICS LETTERS A},
 month = {Dec},
 note = {A theoretical vibrational analysis of the radial breathing mode (RBM) of double-walled carbon nanotubes (DWCNTs) subjected to pressure is presented based on an elastic continuum model. The results agree with reported experimental results obtained under different conditions. Frequencies of the RBM in DWCNTs subjected to increasing pressure depend strongly on circumferential wave numbers, but weakly on the aspect ratio and axial half-wave numbers. For the inner and outer tubes of DWCNTs, the frequency of the RBM increases obviously as the pressure increases under different conditions. The range of variation is smaller for the inner tube than the outer tube., Article, PHYSICS LETTERS A. 375(24):2416-2421 (2011)},
 pages = {2416--2421},
 title = {Radial breathing vibration of double-walled carbon nanotubes subjected to pressure},
 volume = {375},
 year = {2012}
}