Abstract Parametric instabilities induced by the coupling excitation between the high frequency quantum Langmuir waves and the low frequency quantum ion-acoustic waves in single-walled carbon nanotubes are studied with a quantum Zakharov model. By linearizing the quantum hydrodynamic equations, we get the dispersion relations for the high frequency quantum Langmuir wave and the low frequency quantum ion-acoustic wave. Using two-time scale method, we obtain the quantum Zaharov model in the cylindrical coordinates. Decay instability and four-wave instability are discussed in detail. It is shown that the carbon nanotube’s radius, the equilibrium discrete azimuthal quantum number, the perturbed discrete azimuthal quantum number, and the quantum parameter all play a crucial role in the instabilities.
Fund: Project supported by the National Natural Science Foundation of China (Grant Nos. 11274255 and 10975114), the Natural Science Foundation of Gansu Province of China (Grant No. 2011GS04358), and the Creation of Science and Technology of Northwest Normal University of China (Grant No. NWNU-KJCXGC-03-48).
Electron field emission from single-walled carbon nanotube nonwoven Song Li (宋礼), Liu Shuang (刘双), Zhang Geng-Min (张耿民), Liu Li-Feng (刘利峰), Ma Wen-Jun (马文君), Liu Dong-Fang (刘东方), Zhao Xiao-Wei (赵小伟), Luo Shu-Dong (罗述东), Zhang Zeng-Xing (张增星), Xiang Yan-Juan (向彦娟), Shen Jun (沈俊), Zhou Jian-Jun (周建军), Wang Gang (王刚), Zhou Wei-Ya (周维亚). Chin. Phys. B, 2006, 15(2): 422-427.
No Suggested Reading articles found!
Viewed
Full text
Abstract
Cited
Altmetric
blogs
tweeters
Facebook pages
Wikipedia page
Google+ users
Online attention
Altmetric calculates a score based on the online attention an article receives. Each coloured thread in the circle represents a different type of online attention. The number in the centre is the Altmetric score. Social media and mainstream news media are the main sources that calculate the score. Reference managers such as Mendeley are also tracked but do not contribute to the score. Older articles often score higher because they have had more time to get noticed. To account for this, Altmetric has included the context data for other articles of a similar age.