IUVSTA 15th International Vacuum Congress (IVC-15), AVS 48th International Symposium (AVS-48), 11th International Conference on Solid Surfaces (ICSS-11)
    Nanotubes: Science and Applications Topical Conference Tuesday Sessions
       Session NT-TuP

Paper NT-TuP2
Field Emission Properties of Carbon Nanotubes

Tuesday, October 30, 2001, 5:30 pm, Room 134/135

Session: Poster Session
Presenter: Z.Q. Xue, Peking University, China
Authors: Z.Q. Xue, Peking University, China
M. Du, Peking University, China
J.P. Sun, Peking University, China
H. Zhang, Peking University, China
W.M. Liu, Peking University, China
S.M. Hou, Peking University, China
G.M. Zhang, Peking University, China
Z.X. Zhang, Peking University, China
Z.J. Shi, Peking University, China
Z.N. Gu, Peking University, China
L.M. Peng, Peking University, China
Correspondent: Click to Email
SWCNTs have been synthesized and purified. Using a water colloid, SWCNTs have been assembled at the end of a tungsten tip that can be used as samples of field emission microscope (FEM) and field ion microscope (FIM). Images of a carbon nanotube open end were studied by the field ion microscope. Atomic resolution patterns of the tube open end were obtained. Field emission properties of SWCNTs have been studied exploiting the field emission microscope (FEM). A field emission pattern of an SWCNT at atomic resolution was observed, which was consistent with the calculated results of a (9,9) armchair SWCNT. Conventional field emission analysis utilizes the Fowler-Nordheim equation, a typical current versus voltage curve of SWCNT was measured. The plotting of ln(I/V @super 2@) versus 1/V shown yielded a straight line in agreement with the Fowler-Nordheim equation, confirming the current resulted from field emission.