title: [A comparative Raman study of carbon nanotubes allays].
abstract: A series of comparative Raman study of carbon nanotubes arrays prepared by thermal chemical vapor deposition are reported. The results suggest that the G mode and D mode of carbon nanotubes (CNTs) arrays are all downshifted as compared to that of polycrystalline graphite, and the shifted number in well-aligned CNTs arrays is more than that in misaligned CNTs arrays. Moreover, the intensity ratio ID/IG indicates the ordering in CNTs arrays. A lower ID/IG means a higher graphitization and less amorphous carbon in CNTs arrays.
authors.affiliation: Key Laboratory of Radiation Beam Technology and Materials Modification of Ministry of Education, Institute of Low Energy Nuclear Physics, Beijing Normal University, China.
authors.forename: Rui-ting
authors.initials: RT
authors.lastname: Zheng
authors.forename: Guo-an
authors.initials: GA
authors.lastname: Cheng
authors.forename: Yong
authors.initials: Y
authors.lastname: Zhao
authors.forename: Hua-ping
authors.initials: HP
authors.lastname: Liu