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DOI	10.1126/science.283.5407.1513
	Electrostatic deflections and electromechanical resonances of carbon nanotubes
	Poncharal P.; Wang Z.L.; Ugarte D.; De Heer W.A.
发表日期	1999
ISSN	0036-8075
起始页码	1513
结束页码	1516
卷号	283 期号:5407
英文摘要	Static and dynamic mechanical deflections were electrically induced in cantilevered, multiwalled carbon nanotubes in a transmission electron microscope. The nanotubes were resonantly excited at the fundamental frequency and higher harmonics as revealed by their deflected contours, which correspond closely to those determined for cantilevered elastic beams. The elastic bending modulus as a function of diameter was found to decrease sharply (from about 1 to 0.1 terapascals) with increasing diameter (from 8 to 40 nanometers), which indicates a crossover from a uniform elastic mode to an elastic mode that involves wavelike distortions in the nanotube. The quality factors of the resonances are on the order of 500. The methods developed here have been applied to a nanobalance for nanoscopic particles and also to a Kelvin probe based on nanotubes.
英文关键词	carbon; article; chemical analysis; electric potential; frequency modulation; mathematical analysis; molecular dynamics; priority journal; transmission electron microscopy; vibration; waveform
语种	英语
来源期刊	Science
文献类型	期刊论文
条目标识符	http://gcip.llas.ac.cn/handle/2XKMVOVA/245110
作者单位	School of Physics, Georgia Institute of Technology, Atlanta, GA 30332-0430, United States; Sch. of Mat. Science and Engineering, Georgia Institute of Technology, Atlanta, GA 30332-0245, United States; Lab. National de Luz Sincrotron, Cx Postal 6192, 13083-970 Campinas SP, Brazil
推荐引用方式 GB/T 7714	Poncharal P.,Wang Z.L.,Ugarte D.,et al. Electrostatic deflections and electromechanical resonances of carbon nanotubes[J],1999,283(5407).
APA	Poncharal P.,Wang Z.L.,Ugarte D.,&De Heer W.A..(1999).Electrostatic deflections and electromechanical resonances of carbon nanotubes.Science,283(5407).
MLA	Poncharal P.,et al."Electrostatic deflections and electromechanical resonances of carbon nanotubes".Science 283.5407(1999).