Beam to String Transition of Vibrating Carbon Nanotubes Under Axial   Tension

doi:10.1002/adfm.200900105

CORC > 北京大学 > 信息科学技术学院

	Beam to String Transition of Vibrating Carbon Nanotubes Under Axial Tension
	Wei, Xianlong ; Chen, Qing ; Xu, Shengyong ; Peng, Lianmao ; Zuo, Jianmin
刊名	先进功能材料
	2009
关键词	YOUNGS MODULUS RESOLUTION MECHANISM STRENGTH GROWTH ROPES
DOI	10.1002/adfm.200900105
英文摘要	State-of-the-art nanoelectromechanical systems have been demonstrated in recent years using carbon nanotube (CNT) based device, where the vibration of CNTs is turned by tension induced through external electrical fields. However, the vibration properties of CNTs under axial tension have not been quantitatively determined in experiments. Here, a novel in situ method for precise and simultaneous measurement of the resonance frequency the axial tension applied to individual CNTs and the tube geometry is demonstrated. A gradual beam-to-string transition from multi-walled CNTs to single-walled CNTs is observed with the crossover from bending rigidity dominant regime to extensional rigidity dominant regime occur much larger than that expected by previous theoretical work. Both the tube resonance frequency under tension and transition of vibration behavior from beam to string are surprisingly well fitted by the continuum beam theory. In the limit of a string. the vibration of CNT is independent of its own stiffness, and a force sensitivity as large as 0.25 MHz (pN)(-1) is demonstrated using a 2.2nm diameter single-walled CNT. These results will allow for the designs of CNT resonators with tailored properties.; Chemistry, Multidisciplinary; Chemistry, Physical; Nanoscience & Nanotechnology; Materials Science, Multidisciplinary; Physics, Applied; Physics, Condensed Matter; SCI(E); EI; 16; ARTICLE; 11; 1753-1758; 19
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/152867]
专题	信息科学技术学院
推荐引用方式 GB/T 7714	Wei, Xianlong,Chen, Qing,Xu, Shengyong,et al. Beam to String Transition of Vibrating Carbon Nanotubes Under Axial Tension[J]. 先进功能材料,2009.
APA	Wei, Xianlong,Chen, Qing,Xu, Shengyong,Peng, Lianmao,&Zuo, Jianmin.(2009).Beam to String Transition of Vibrating Carbon Nanotubes Under Axial Tension.先进功能材料.
MLA	Wei, Xianlong,et al."Beam to String Transition of Vibrating Carbon Nanotubes Under Axial Tension".先进功能材料 (2009).