Zhou Weiwei, Zhang Yan, Li Xuemei, Yuan Shiling, Jin Zhong, Xu Junjian, Li Yan
Key Laboratory for the Physics and Chemistry of Nanodevices, College of Chemistry and Molecular Engineering, Peking University, Beijing 100871, China.
J Phys Chem B. 2005 Apr 21;109(15):6963-7. doi: 10.1021/jp050629u.
The preferential growth of single-walled carbon nanotubes (SWNTs) on silica spheres with various diameters was realized for the first time by chemical vapor deposition (CVD) of methane. SWNTs tend to wrap the silica spheres to form a new superstructure of uniform SWNT nanoclaws when the diameters of the silica spheres are larger than 400 nm. The SWNTs obtained on silica spheres have highly graphitic tubular walls as characterized by Raman spectroscopy and HRTEM. This is a new method to obtain tunable uniform elastic deformation of SWNTs, which may act as the model for the study about the effect of delocalized bending on the properties of SWNTs. In addition, the combination of SWNTs with monodispersed silica spheres could conveniently integrate SWNTs into photonic crystals.
通过甲烷的化学气相沉积（CVD）首次实现了单壁碳纳米管（SWNTs）在不同直径二氧化硅球上的优先生长。当二氧化硅球的直径大于400nm时，SWNTs倾向于包裹二氧化硅球以形成均匀的SWNT纳米爪新超结构。通过拉曼光谱和高分辨透射电子显微镜（HRTEM）表征，在二氧化硅球上获得的SWNTs具有高度石墨化的管壁。这是一种获得SWNTs可调谐均匀弹性变形的新方法，这可能作为研究离域弯曲对SWNTs性能影响的模型。此外，SWNTs与单分散二氧化硅球的结合可以方便地将SWNTs整合到光子晶体中。
