Field emission patterns with atomic resolution of single-walled carbon   nanotubes by field emission microscopy

doi:10.1360/03yg9005

CORC > 北京大学 > 化学与分子工程学院

	Field emission patterns with atomic resolution of single-walled carbon nanotubes by field emission microscopy
	Hou, SM ; Zhang, ZX ; Liu, WM ; Luo, J ; Zhang, GM ; Gu, ZN ; Zhao, XY ; Peng, LM ; Wu, JL ; Xue, ZQ
刊名	中国科学g辑物理学力学天文学
	2003
关键词	field emission microscope single-walled carbon nanotubes resolving power atomic resolution ELECTRON-EMISSION STATES
DOI	10.1360/03yg9005
英文摘要	Electron emission properties of single-walled carbon nanotubes (SWCNTs) assembled on a tungsten tip were investigated using field emission microscopy (FEM). The transmission electron microscopy (TEM) micrograph confirmed the existence of an SWCNT bundle on the W tip. Under appropriate experimental conditions, a series of FEM patterns with atomic resolution were obtained. These patterns arose possibly from the field emission of the open end of an individual (16,0) SWCNT protruding from the SWCNT bundle. The magnification factor and the resolution under our experimental conditions were calculated theoretically. If the value of the compression factor beta was set at beta = 1.76, the calculated value of the magnification factor was in agreement with the measured value. The resolving power of FEM was determined by the resolution equation given by Gomer. The resolution of 0.277 nm could be achieved under the typical electric field of 5.0 x 10(7) V/cm, which was close to the interatomic separation 0.246 nm between carbon atoms along the zigzag edge at the open end for the (16, 0) SWCNT Consequently, our experimental results were further supported by our theoretical calculation.; Physics, Multidisciplinary; SCI(E); EI; 5; ARTICLE; 1; 33-40; 46
语种	英语
内容类型	期刊论文
源URL	[http://ir.pku.edu.cn/handle/20.500.11897/292341]
专题	化学与分子工程学院信息科学技术学院
推荐引用方式 GB/T 7714	Hou, SM,Zhang, ZX,Liu, WM,et al. Field emission patterns with atomic resolution of single-walled carbon nanotubes by field emission microscopy[J]. 中国科学g辑物理学力学天文学,2003.
APA	Hou, SM.,Zhang, ZX.,Liu, WM.,Luo, J.,Zhang, GM.,...&Xue, ZQ.(2003).Field emission patterns with atomic resolution of single-walled carbon nanotubes by field emission microscopy.中国科学g辑物理学力学天文学.
MLA	Hou, SM,et al."Field emission patterns with atomic resolution of single-walled carbon nanotubes by field emission microscopy".中国科学g辑物理学力学天文学 (2003).